12 Roof Repair Tips: Find and Fix a Leaking Roof

12 Roof Repair Tips: Find and Fix a Leaking Roof

You can stop leaks yourself-no experience necessary. We show you how to track down and fix the most common types of roof leaks. Most leaks take only minutes to repair.

Roof Leak Overview  12 Roof Repair Tips: Find and Fix a Leaking Roof FH09JAU FIXROO 02

Roof Leak Overview

If you have water stains that extend across ceilings or run down walls, the cause is probably a roof leak. Tracking down the leak is the hard part; the fixes are usually pretty easy. We'll show you some simple tricks for finding and repairing most of the common types of roof leaks. But if you live in the Snow Belt and in the winter you have leaks only on warm or sunny days, you probably have ice dams. We won't go into those fixes in this story. Check out this article for more on preventing ice dams.

If you have a roof leak, you'd better fix it immediately, even if it doesn't bother you much or you're getting a new roof next year. Even over a short time, small leaks can lead to big problems, such as mold, rotted framing and sheathing, destroyed insulation and damaged ceilings. The flashing leak that caused an expensive repair bill was obvious from the ceiling stains for over two years. If the homeowner had dealt with it right away, the damage and subsequent repairs would have been minimal.

How to Find Roof Leaks  12 Roof Repair Tips: Find and Fix a Leaking Roof FH09JAU FIXROO 03

How to Find Roof Leaks

When you're trying to track down a leak, start by looking at the roof uphill from the stains. (Plus: here's how to clean roof stains.) The first thing to look for is any roof penetrations. Items that penetrate the roof are by far the most common source of leaks. In fact, it's rare for leaks to develop in open areas of uninterrupted shingles, even on older roofs. Penetrations can include plumbing and roof vents, chimneys, dormers or anything else that projects through the roof. They can be several feet above the leak or to the right or left of it.

If you have attic access, the easiest way to track down a leak is to go up there with a flashlight and look for the evidence. There will be water stains, black marks or mold. But if access is a problem or you have a vaulted ceiling, you'll have to go up onto the roof and examine the suspect(s).

A Trick for Finding Difficult Leaks  12 Roof Repair Tips: Find and Fix a Leaking Roof FH09JAU FIXROO 01

A Trick for Finding Difficult Leaks

If a leak is difficult to find, enlist a helper and go up on the roof with a garden hose. Start low, soaking the area just above where the leak appears in the house. Isolate areas when you run the hose. For example, soak the downhill side of a chimney first, then each side, then the top on both sides. Have your helper stay inside the house waiting for the drip to appear. Let the hose run for several minutes in one area before moving it up the roof a little farther. Tell your helper to yell when a drip becomes visible. You'll be in the neighborhood of the leak. This process can take well over an hour, so be patient and don't move the hose too soon. Buy your helper dinner. If running water doesn't reveal the exact location of the leak, don't be timid. Start removing shingles in the suspect area. With them removed, there'll be evidence of the leak and you'll be able to track it down right to the source. You'll see discolored felt paper or water-stained or even rotted wood directly below and around it.

Solution for a Small Leak  12 Roof Repair Tips: Find and Fix a Leaking Roof FH06FEB ROOFLK 01

Solution for a Small Leak

Some roof leaks are tough to locate. Sometimes the water shows up at a ceiling spot distant from the leak. If your ceiling has a plastic vapor barrier between the drywall and the attic insulation, push the insulation aside and look for flow stains on the plastic. Often water runs to openings in the vapor barrier, such as at ceiling light fixtures.

If you can't see any telltale flow marks, and since the stain is fairly small, look at the underside of the roof for 'shiners.' A shiner is a nail that missed the framing member, in this case when the carpenter nailed the roof sheathing to the rafters. Moisture that escapes into the cold attic from the rooms below often condenses on cold nails. Sometimes you can spot this if you climb up into your attic on a cold night. The nails will look white because they're frosted. When the attic heats up a bit during the day, the frost melts and drips, then the nails frost up at night again and so on. The solution is to simply clip the nail with a side-cutting pliers.

Fix Plumbing Vent Boots  12 Roof Repair Tips: Find and Fix a Leaking Roof FH09JAU FIXROO 04 05

Fix Plumbing Vent Boots

Plumbing vent boots can be all plastic, plastic and metal, or even two-piece metal units. Check plastic bases for cracks and metal bases for broken seams. Then examine the rubber boot surrounding the pipe. That can be rotted away or torn, allowing water to work its way into the house along the pipe. With any of these problems, you should buy a new vent boot to replace the old one. But if the nails at the base are missing or pulled free and the boot is in good shape, replace them with the rubber-washered screws used for metal roofing systems. You'll find them at any home center with the rest of the screws. You'll have to work neighboring shingles free on both sides. If you don't have extra shingles, be careful when you remove shingles so they can be reused. Use a flat bar to separate the sealant between the layers. Then you'll be able to drive the flat bar under the nail heads to pop out the nails.

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Fix Roof Vents

Check for cracked housings on plastic roof vents and broken seams on metal ones. You might be tempted to throw caulk at the problem, but that solution won't last long. There's really no fix other than replacing the damaged vents. Also look for pulled or missing nails at the base's bottom edge. Replace them with rubber-washered screws. In most cases, you can remove nails under the shingles on both sides of the vent to pull it free. There will be nails across the top of the vent too. Usually you can also work those loose without removing shingles. Screw the bottom in place with rubber-washered screws. Squeeze out a bead of caulk beneath the shingles on both sides of the vent to hold the shingles down and to add a water barrier. That's much easier than renailing the shingles.

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Fix Walls and Dormers

Water doesn't always come in at the shingled surface. Often, wind-driven rain comes in from above the roof, especially around windows, between corner boards and siding, and through cracks and knotholes in siding. Dormer walls provide lots of spots where water can dribble down and enter the roof. Caulk can be old, cracked or even missing between the corner boards and between window edges and siding. Water penetrates these cracks and works its way behind the flashing and into the house. Even caulk that looks intact may not be sealing against the adjoining surfaces. Dig around with a putty knife to see if the area is sealed. Dig out any suspect caulk and replace it with a siliconized latex caulk. Also check the siding above the step flashing. Replace any cracked, rotted or missing siding, making sure the new piece overlaps the step flashing by at least 2 in. If you still have a leak, pull the corner boards free and check the overlapping flashing at the corner. Often, there's old, hardened caulk where the two pieces overlap at the inside corner.

Complex Roof Problem  12 Roof Repair Tips: Find and Fix a Leaking Roof FH06DJA LEAKRF 01

Complex Roof Problem

This roof leaks during the snowy part of winter and during storms in the summer, certainly due to poor flashing. The soffit that meets the roof is one of the toughest areas to waterproof. In the photo, you can still see signs of an ice dam. An ice dam occurs when snow melts and the water freezes when it hits the colder edges of your roof. Eventually, water pools behind the dam and works its way back up under the shingles and under the soffit until it finds an opening through the roof.

The solution begins with good flashing, since this should stop leaks from rainfall and might stop the leaks from ice dams as well. Begin by removing the shingles down to the wood sheathing and slip a strip of adhesive ice-and-water barrier (available where roofing products are sold) under the soffit/main roof joint. Depending on how the roofs join, you may have to cut a slot to work it in far enough. It should overlap another piece of ice-and-water barrier laid below, all the way down to the roof edge. This should cover the most leak-prone areas. Then reshingle, sliding metal step flashing behind the fascia board (the trim behind the gutter). The valley flashing, laid over the joint where the two roofs meet, should overlap the step flashing at least 2 in.

If leaks continue to occur from ice dams, consider installing roof edge heating cables. (Find them locally at hardware stores or home centers.) Improved attic insulation and ventilation are usually the best ways to prevent ice dams, but they might not be effective in this complicated roof situation.

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Fix Step Flashing

Step flashing is used along walls that intersect the roof. Each short section of flashing channels water over the shingle downhill from it. But if the flashing rusts through, or a piece comes loose, water will run right behind it, and into the house it goes. Rusted flashing needs to be replaced. That means removing shingles, prying siding loose, and then removing and replacing the step flashing. It's that simple. But occasionally a roofer forgets to nail one in place and it eventually slips down to expose the wall. Check out this article for more on installing your own step flashing.

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Don't Count on Caulk!

Rarely will caulk or roof cement cure a roof leak?at least for very long. You should always attempt a 'mechanical' fix whenever possible. That means replacing or repairing existing flashing instead of using any type of sealant. Only use caulk for very small holes and when flashing isn't an option.

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Fix Small Holes

Tiny holes in shingles are sneaky because they can cause rot and other damage for years before you notice the obvious signs of a leak. You might find holes left over from satellite dish or antenna mounting brackets or just about anything. And exposed, misplaced roofing nails should be pulled and the holes patched. Small holes are simple to fix, but the fix isn't to inject caulk in the hole. You'll fix this one with flashing.

Leaks Around Brick Chimneys  12 Roof Repair Tips: Find and Fix a Leaking Roof FH09JAU FIXROO 14

Leaks Around Brick Chimneys

All kinds of bad things can happen around brick chimneys. In fact, there are far too many to cover in this story. Flashing around chimneys can rust through if it's galvanized steel, especially at the 90-degree bend at the bottom. A quick but fairly long-term fix is to simply slip new flashing under the old rusted stuff. That way any water that seeps through will be diverted. The best fix, though, is to cut a saw kerf into the mortar and install new flashing. Get complete instructions on how to install chimney flashing.

Do-It-Yourself Roofing Guide

Doing The Roofing Job / Installing Your New Roof

Preparing/Protecting The Job Area

Some general suggestions for preparing the job area:

Make sure you have a clean, organized work area. Block it off from children and pets. Identify and avoid all site danger areas, such as dangerous power lines, unsafe roof access areas, and underground hazards (such as cesspools and power lines).

Remove wall hangings as well as any loose items from walls and shelves. Use tarps to avoid damaging plants and shrubs. Park any cars or other vehicles away from the driveway and a safe distance from the construction area. Disable any sprinkler systems. Cover any pools and hot tubs, and remove any other sensitive items around the house that might be damaged by falling roofing debris.

Tearing Off The Roof And Preparing The Roof Deck

Nothing is more important in roofing than preparing the surface under the shingles. With a roof tear-off, when the old materials are removed, you’ll have a clean deck that allows you to see any potential problems that need to be fixed. This could range from rotten wood to cracked boards to an unsound deck that won’t hold nails as well.

For the proper methods for tearing off a roof and preparing the roof deck, see ourHow-To-Video .

Installing Roof Deck Protection

The proper installation of high-quality roof deck protection like Deck-Armor™ Premium Breathable Roof Deck Protection, Shingle-Mate® Roof Deck Protection, or Tiger Paw™ Roof Deck Protection is the foundation on which a good roof system is built.

See our How-to Video for installing premium deck protection .

View application instructions for roof deck protection products.

Installing Leak Barrier

Protect your investment and safeguard vulnerable areas of your roof with GAF’s proven leak barriers.

View application instructions for our leak barrier products.

Starter Strip Shingles

One of the most common sources of failure in a roof system is the improper installation of starter shingles. This starter course is very important, especially for wind resistance. Starter strip shingles are the first line of defense against wind uplift along the edges of a roof. GAF offers pre-cut WeatherBlocker™ Premium Eave/Rake Starter Strip Shingles and Pro-Start® Starter Strips.

For the proper installation technique for starter strip shingles, see our How-To Video.

Proper Shingle Nailing

Nailing errors, such as under-driven or angled nails, can cause future problems with your shingles—everything from premature failure and blistering to blow-offs. Nail type, location, length, angle, and force of application are all critical to consider when installing shingles. It’s important to take your time when installing nails to ensure the job is done correctly.

For the proper shingle nailing technique, see our How-To Video.

Installing Your Shingles

Installing Timberline® Shingles

Timberline® Shingles with Advanced Protection® Technology are the #1-selling shingles in all of North America. Timberline® Shingles will not only protect your most valuable asset—they’ll beautify your home for years to come.

For the proper installation technique for Timberline® Shingles, see our How-To Video .

View the application instructions for our Timberline® Shingles..

Installing Designer Shingles

Maximizing your property’s visual appeal with Lifetime Designer Shingles from GAF can be exciting, fun—and a smart investment.

View the application instructions for our Lifetime Designer Shingles.

How To Do Valleys

Valleys are one of the areas of roofing that takes careful planning and time to install correctly. Valleys are a prime leak area, so it’s important to be precise during installation.

See our How-to Video for installing valleys..

Installing Flashing

Wherever surfaces intersect on a roof, there is a chance of water seepage. Flashing is highly recommended for waterproofing these critical areas of your roof.

See our How-to Video for installing flashing and details.

Installing Ridge Vents

Proper ventilation is critical for helping to reduce hot and moist air in your attic space that can damage your possessions, increase your energy costs, and potentially reduce the longevity of your roofing system. The Federal Housing Authority in the U.S. the Engineered Wood Association, many national building codes, and all major roofing manufacturers require the installation of attic ventilation. GAF offers one of the industry’s most comprehensive line of ridge vents .

Installing ridge vents requires working on some of the highest parts of your roof—the ridges. Always utilize proper safety equipment to prevent falls or injury when installing ridge vents on your roof. See our Safety section for more details.

Deciding on the proper vent and the amount of ventilation needed is critical. Consult your local building code for balanced attic ventilation requirements in your area. Once you decide on the type of vent that is needed and how much to install, always ensure you install the vent as per written application instructions. Be careful not to cut any attic rafters or wires, and always ensure to properly fasten the vent to prevent blow-off or weather infiltration.

See our How-to Video for installing ridge vents.

Installing Ridge Cap Shingles

Hip or ridge cap shingles are not only a great finishing touch to your roof, they are also a critical piece of your roof system that helps to protect some of the highest stress and vulnerable areas on your roof. GAF offers premium ridge cap shinglesdesigned to match your GAF laminated shingles.

Installing hip or ridge shingles requires working on some of the highest parts of your roof—the hips and ridges. Always utilize proper safety equipment to prevent falls or injury when installing hip or ridge shingles on your roof.

See our How-to Video for installing ridge cap shingles

View application instructions for ridge cap shingles.

Installing Other Ventilation Options

GAF offers an extended line of professional-grade Master Flow® ventilation products, from whole house fans to roof louvers to turbines.

View the application instructions for our Master Flow® ventilation products

Cleaning Up The Job Site

Professional roofing contractors develop specialized techniques and equipment for keeping the jobsite clean. Tackling the job on your own, you can adopt some of these practices as well. Some quick tips are to shelter and protect bushes and plants that might be affected by material dropping from the roof, and to use a tarp to catch as much material as possible. Many roofing contractors follow a completed job by running a magnet over the "drop zone" to collect any nails that might have escaped.

Also see our section on Recycling and Waste Disposal .

How Long Will It Take?

Realistically, do-it-yourself roofing can take a lot of time and effort. It depends on various factors, such as your level of experience, the size of your roof, whether or not you need to do a complete tear-off of the existing roof, how much preparation your roof deck needs, and how many people are assisting you. Since it’s important not to leave your roof unprotected for any length of time, you must allow at least several uninterrupted days in a row to work on the project.

Keep in mind that a professional roofing contractor with a crew will finish the job more quickly and efficiently.

Locate a factory-certified GAF Master Elite® Contractor near you. >>

This post was taken from https://www.gaf.com/roofing/residential/diy/doing_the_job

Do-It-Yourself Roofing Guide bannercropped

Roofing Renovation: 6 Do’s And Don’ts For Success

Roofing Renovation: 6 Do’s And Don’ts For Success

By Tom Hanzely and Robert Anderson

The lifespan of commercial roofing systems varies depending on geography, climate, roof type, and other factors, but at some point, every roofing system needs to be reevaluated. Renovations not only ensure safety for building occupants, but also verify the system will keep energy costs to a minimum and prevent problems from occurring later on. Facility managers can work with their roofing contractors to determine the best course of action for a roofing system, but it’s important the facility professional be as informed as possible when making decisions about his or her building.

Here are some do’s and don’ts to keep in mind before undergoing your next roofing renovation:

DO determine the current state of your roof. It’s important to figure out whether your roof needs an overlay or a complete tear-off and roof replacement. During a roof recover, a new membrane or roofing system is installed over the current roof, while a tear-off completely removes the roof down to an exposed deck. Part of making this decision means inspecting the roof for damage. What you’re looking for will depend on the type of roof. For instance, sloped roofs should be examined for any warping or bending, as this is a sign the roof may be nearing the end of its lifecycle.roof replacement Roofing Renovation: 6 Do’s And Don’ts For Success Roofing Renovation: 6 Do’s And Don’ts For Success insulation install firestone

If conducting a roof recover, the existing roof needs to be able to support the weight of the new roof being placed over top of it. With minimal damage from elements like moisture, placing an overlayment on top of the old roof can help keep costs down and is a quick, effective way to re-roof.

DON’T forget to inspect materials. What type of existing surfaces are on the roof? Are they in good condition? Conduct a visual inspection of the roof to determine the state of materials. For example, is the roof coating cracked? Is the rubber membrane torn? Are there visible leaks? Drainage systems should also be inspected in order to prevent any future water damage from occurring. If the current roof is equipped with polyiso insulation, it may be able to be reused and recycled. However, this will depend on whether you’re doing a complete roof replacement or simply re-covering. A tear-off will typically require more inches of insulation than a roof overlay.

roof replacement Roofing Renovation: 6 Do’s And Don’ts For Success Roofing Renovation: 6 Do’s And Don’ts For Success vegetated roof firestoneDO think long term. What is this roof being used for over the next 10 to 20 years? Will it endure heavy foot traffic? Will it face strong UV rays and high temperatures? Determining how the roof will be used will help you figure out what materials to use during the renovation to ensure an extended roof life. For instance, in some climate zones, white, reflective membranes can help ward off UV rays and keep the roof cool, helping to reduce cooling costs over time, while a vegetated roof can provide ample green space for building occupants. Vegetated roofs also offer benefits spanning from stormwater management to energy savings. However, you want the underlying roof system to be repaired, if needed, before a vegetated roof is installed over top.

DON’T overlook alternative materials. While a roof recover can be a good substitute to a replacement, there are other options to consider as well. For instance, talk with your roofing contractor about liquid-applied roof coatings to see if that may be a viable choice for your commercial building. Liquid-applied coatings are installed over your commercial roof, and in some cases, can extend an existing roof’s service life, provide energy savings, and even deliver cost savings over the long term. Keep in mind, however, the existing roof has to be in somewhat good condition before a coating is applied. Roof coatings should be used as a preventive measure to protect the roof rather than repair damage that has already been done.

DO stay up to date on building codes and standards. As a facility manager, you’re well aware of the importance of adhering to building codes and standards. Roofing codes and standards are always evolving, which means it’s critical to be in the know about when things change, and how those adjustments will impact your roofing system. Familiarize yourself with the building codes in your area, and make an effort to stay in touch with trade associations so you’re aware of any changes that will impact your building. It’s also a good idea to study basic code requirements that may apply to any commercial building.

DON’T wait for a problem to occur before renovating. Rather than waiting for a problem to arise, schedule regular roof inspections at least twice a year. This way, you’ll be able to start renovations on the roof before major problems, like roof leaks, start to occur. Even if there aren’t any visible problems with your commercial roof, it doesn’t mean a renovation or complete replacement should be put off.

While roofing renovations will vary greatly depending on the type of roofing system in place and other external factors like climate and geography, renovations are crucial for maintaining roof life, ensuring high performance and promoting a safe environment for building occupants. Establish a good working relationship with your roofing contractor to determine which approach is the best option for your building.

THis post was taken from : https://facilityexecutive.com/2017/07/roofing-renovation-6-dos-donts-success/

Top tips to optimally use conventional waterproofing techniques

While the first part of this two-part series examines conventional waterproofing systems and offers tips to use them for optimum effect, the second part will discuss modern waterproofing techniques. 

of building to prevent the ingress of water is an activity, which, perhaps is practiced in one form or the other, ever since the first building was built on earth. The methodology has been changing with the changes in the architectural designs and with the availability different building materials in construction.
 
In the initial stages when stone was the main building placed in position with mud or lime mortar the emphasis used to be to make the construction in such a way that the rainwater does not collect on the roofs. Hence old relied mainly on dome structures or slanting roofs. The slow speed of such construction and unaffordability of common man to build such structures for their own dwelling, made constant evolution and development in the technology.


 
With these developments the concepts of also changed. Now in present day construction wherein the ordinary and its blends with and slag materials has come to stay a lot of compatible alternatives are available for a builder to choose from various systems. Some systems are old and conventional but still practiced successfully and some are modern systems designed taking the material and structural behaviour into consideration.
 
There are some compounds, which are used in plastic concrete to make it less permeable to water. These compounds are known as integral compounds. They are based on plasticising and air-entrainment or water repellence principles. These are used as a good precautions when other factors such as good mix-design, proper mixing/placing, compacting/curing etc are taken care of. This subject of integral compounds requires in depth discussion hence will not be taken up here. Similarly there are some water proofing techniques for vertical surfaces. These techniques are also used for preserving heritage buildings by stopping/minimising the aging process of these buildings.
 
For solving water seepage problems, customers use both conventional as well as modern techniques.
 
Some of the old and conventional systems are as follows:


This system was developed during the initial stages of flat roof construction with lime mortar burnt clay brick pieces. This system involved laying lightweight mortar on the roof and spreading it to give gentle slopes for draining away the rainwater immediately. The mortar consisted of lightweight brick pieces as aggregates and ground brick with lime as binding matrix.
 
During British rule this system became more popular not because of its efficiency but because of its efficiency in keeping the interiors cool. Some applicators developed better skills in laying these systems, with neatly finished top with lines engraved on top of plastic mortar now known as IPS. Some practiced embedding broken tile or ceramic pieces in the plastic mortar and called it china mosaic.
 
This type of system remained most popular with multi-storeyed construction in all major cities. The system lasts up to 15 years if done by skilful applicators. This system may be considered more from its weather proofing abilities rather than its qualities. Once water starts entering into the brickbat coba the brick pieces absorb too much of water and the roof becomes an invisible pond of water continuously causing leakage and increasing burden on the roof slab. It will be highly beneficial if brick-bat coba is laid on a flexible membrane as water proofing as well as economical weather proofing can be achieved with this system.
 
treatment
Discovery of petroleum and its products and by-products has given the construction industry an indispensable product in the form of bitumen. Bitumen is more commonly used in the form of felt or flexible membrane formed by sandwiching jute fabric or fibreglass/polypropylene mats with chemically modified bitumen. These membranes are laid on the roofing over a bitumen primer. There are two types of membranes one is cold applied and the other hot applied which means one needs to heat the edges of the felt with a torch so that they melt and stick to the second layer in the overlap area.
 
On the roofs the bitumen felts have not been successful because of the unacceptable black appearance and inaccessibility of the terrace for other social uses. Technically it is not preferred because bitumen layer or felt on the terrace not only makes it watertight but also airtight. Concrete has the breathing property. It takes water/moisture and breathes out water vapour. Hindrance of this breathing property of concrete develops pore pressure, which causes blisters in the felt.
 
After a few seasons the blisters multiply and eventually delaminate the felt from the concrete surface. Hindrance of breathing property of concrete makes the concrete weak. But on the asbestos sheets and zinc sheets in factory roofs, this bitumen felt is the only dependable system. Hence all factory roofs in India adopt this water proofing system.
 
Bitumen is very effective in of basements from outside. Bitumen primers have very successfully been used as damp-proof course in earlier days. This practice is slowly discontinued for whatever reasons now very few engineers now believe that this was in practice once. As consequence of this absent DPC we have a lot of cases of rising dampness, which we tend to attribute to wrong reasons such as the quality or salinity of sand etc. Bitumen still is the product of first choice where it is commonly recommended, in areas such as industrial roof waterproofing, basement waterproofing, and damp-proof course. More over bitumen is the most economical product available for   
    
Metallic sheet wrapping
Because of the non-existence of suitable expansion joint filling compounds before the discovery of poly-sulphides, a complex procedure used to be adopted to treat expansion joints, in concrete dams and such huge structures utilising thick copper sheets. An extension of this practice was to try thin foils of copper and aluminium for wrapping the concrete surfaces with nagging leakage problems.
 
Unavailability of common joining material for these metal foils and the concrete and mortar created weakness in the system at the joints. This discouraged the system in its infancy only. But there after the metal manufacturers have been trying to market this type of system with improved adhesives as and when the metal market slumped.
 
based treatment
consists of two liquid components one is called the base component and the other is called reactor or curing agent. Base is a polyol and the reactor is an isocyanide such as TDI or MDI. There are various grades of and so also there are numerous isocyanides. The combination of these two ingredients results in a formation liquid applied rigid membrane or a foam depending upon the selection.
 
In waterproofing, this rigid liquid membrane was tried with fibreglass reinforcing mats. The systems failed because coefficients of thermal expansion of concrete and rigid PU membrane being different lateral movement or creep occurred with the passage on one working climatic cycle. When exposed to ultra violet rays or direct sunlight most rigid membranes became brittle and crumbled.
 
Apart from this the application of coating needed very rigorous surface preparation. The surface needed to be neutralised by removing alkalinity from the concrete surface through acid itching then washing and blowtorching to make the surface bone dry. This kind of surface preparation with acids angered the civil engineering community and the product ceased to be used as material apart from its several failures. Never the less continuous research in the technology gave the construction industry excellent sealant for glazing industry and foams for thermal insulations. The new generation polyurethanes, which are alkali stable and water-based, may find better applications in industry.
 
based system
Like is also a two-component system having a base resin and a reactor or curing agent. Base resin is obtained by dissolving bis-phenol A flakes in epichlorohydrin. This base is available in various viscosity ranges to suit different application conditions. The curing agent is an amine/polyamine aliphatic or aromatic, or an amine-adduct for general applications and polyamide or an amino-amide for coating purposes. After mixing base and reactor components the resultant viscous liquid or paste if some fillers are added to it can be brush applied like a paint or trowel applied like a mortar.
 
Here also epoxies not withstanding the alkalinity of concrete and the concrete needs to be acid washed and neutralised, which the civil engineers hated. Here again the coefficient of thermal expansion of concrete and being different the compatibility of in exposed concrete surfaces such as roofs became limited. Later the use of in was discarded. But epoxies have come to stay in civil engineering industry as bonding agents, floor & wall coatings, coatings for food processing units, operation theatres and computer and pharmaceutical industries.
 
Box type waterproofing
This type of water proofing system is used only for basement or structures below the ground level from outside to prevent leakages of subsoil water into the basement.
 
In this method, limestone slabs (Shahabad Stones) are first laid in the excavated pit over blinding concrete in a staggered joint fashion to avoid the continuity of the mortar joints. The joints are effectively filled with rich mortar admixed with integral compound and cured. Over this the raft is laid and shear/brick walls constructed. The limestone slabs are erected around the walls in a similar fashion leaving a gap of one to two inches between the external surface of the wall and the inner face of the stone surface. The joints again effectively sealed with rich admixed mortar and the same mortar is filled in the gap between the wall and the stones. This stonework is continued up to ground level. In this system the raft and the sidewalls are protected from direct exposure to sub soil water.
 
This system works on two principles of common sense. First, the area exposed to subsoil water is only the area of the joint where as the whole stone is impervious to water, hence only a fraction of area, that is, that of the joint is exposed to subsoil water, when the joint itself is filled with rich and quality mortar. Second, the path of water to reach the raft or the sidewall is elongated. This elongated path is through quality mortar. This system seeks to delay the occurrence of leakages in the basements. A lot of building structures are waterproofed by this system. A few notable successes are to its credit especially in five star hotels and of-course there are a few failures as well.
 
(The second part of this series will discuss the modern techniques and their advantages)

 This post was taken from http://www.business-standard.com

Waterproofing conference will bring together a range of professionals

The second international structural waterproofing conference will focus on the themes of design, specification and best practice

The Property Care Association said its upcoming structural waterproofing conference will appeal to a broad range of professions and industries.

The PCA represents the structural waterproofing sector and has committed to drive best practice. Recently, the association introduced a new standard in collaboration with the NHBC. Chapter 5.4 aims to deliver improvements in waterproofing works and was introduced following the revelation claims on basements had cost close to £21m since 2005.

The conference, which will be the second international event dedicated to the topic, will take place on 6 July at The Slate, University of Warwick.

The agenda has been developed with housebuilding, construction, civil and architectural professionals in mind.

Following a three-session format, it will focus on themes surrounding design, specification and best practice. Topics to be discussed will also include concrete in waterproofing, hydrogeology and soil mechanics as well as structural design and ground gas management.

Following on from success

Steve Hodgson, Chief Executive of the Property Care Association (PCA), said: “Last year’s inaugural structural waterproofing conference was a great success across industry, providing a useful opportunity to broaden knowledge and skills within this important area.

“Based on that success we have been able to further enhance the event for 2017, widening its scope and scale with industry-leading speakers covering a range of subjects.”

To book a place on the conference visit the PCA site.

This post was taken from www.pbctoday.co.uk

Waterproofing conference will bring together a range of professionals Waterproofing conference will bring together a range of professionals hall 828549 1920

8 Easy Ways to Repair or Refurbish Your Asbestos Roof

8 Easy Ways to Repair or Refurbish Your Asbestos Roof

Repairing your leaking asbestos roof has never been more straightforward. Here's eight easy ways to fix your deteriorating bolts and washers, safely seal asbestos sheets and fix those leaky cracks in your roof.
1) Asbestos Crack Repair Tape

2) Asbestos Roof Hole Repair

3) Bolt Hole Repairs

4) Sealing General Roof Sheet Damage

5) Asbestos Single Sheet Replacement

6) Refurbish With a Specialist Coating

7) Over Cladding

8) Repairing Roof Lights

1) Using Crack Repair Tape

Where cracks are obvious, crack repair tape is a fast way to stop leaks in asbestos cement roofing – but not all tapes are the same. Although it’s tempting to resort to commonplace products, many are bitumen based, meaning they're affected by UV light and can easily crack in the cold.

Our solution is a rubber-based tape. It's UV stable, maintains its flexibility, and never sets hard – essential on roofs with cracks, where repair materials require the same high degree of movement as the roof itself. This cost-effective solution is highly effective and straightforward, making it first on our list, and an essential tool in any asbestos crack repair. You can get everything you need to seal that crack with our easy to apply repair kit.

Learn more about the Crack Repair Kit

Asbestos roof repair kit 8 easy ways to repair or refurbish your asbestos roof 8 Easy Ways to Repair or Refurbish Your Asbestos Roof asbestos roof repair kit

Need a simple and reliable repair solution? We also recommend using the fibre reinforced instant repair StopGap.

2) Asbestos Roof Hole Repair

In emergencies, you need a product that works quickly. Again, we’d urge caution with some of the well-known products that claim to work in water and cold. To some extent they do, but when the integrity and weatherproofing of your premises is at stake, you really need a longer-lasting solution. We’re sure you would prefer not to keep sending someone back onto your roof to ‘repair the repair’. That's why we've created the DIY Asbestos Roof Hole Repair Kit, with everything you need and a step by step photo guide that makes it easy.

Learn more about the Asbestos Roof Hole Repair

Asbestos roof repair kit 8 easy ways to repair or refurbish your asbestos roof 8 Easy Ways to Repair or Refurbish Your Asbestos Roof asbestos roof repair kit 1

3) Bolt-hole Repairs

Bolt holes in your asbestos roof will eventually enlarge and the washer will corrode due to exposure to UV, making it ineffective. You can repair this by replacing the washer and bolt, or using a flexible tape or coating to seal the area. Where replacing the washer and bolt isn’t an option due to difficult access to the roof, the flexibility of crack repair tape is ideal. You can also apply an emergency repair coating to seal the bolt hole.

Learn more about The Asbestos Roof Bolt Repair Kit

Asbestos Roof Repair 8 easy ways to repair or refurbish your asbestos roof 8 Easy Ways to Repair or Refurbish Your Asbestos Roof untitled design 1

4) Sealing general roof sheet damage + cracks

Asbestos sheets will eventually deteriorate and that can mean leaks and water damage. This can lead to cracks. Nobody wants to watch their building and possessions being destroyed every rainfall. Many sealants don't have the durability for long term repair, particularly as frequent temperature changes cause the building to move. So even after repair, many building owners end up back on the roof.

That's why we only use UV stable, flexible, and highly durable repair solutions that can stand the test of time. You get a watertight repair that can stop your leak and seal your roof against the worst of the rain.

Learn more about the Asbestos Crack and Roof Sheet Repair Kit

Leaking asbestos garage roof 8 easy ways to repair or refurbish your asbestos roof 8 Easy Ways to Repair or Refurbish Your Asbestos Roof leaking asbestos garage roof

5) Asbestos Single Sheet Replacement

The traditional way is to remove the old sheet and replace with a new one. You can also use glass-reinforced plastic (fibreglass) GRP Oversheet, applied externally. GRP gives a guaranteed replacement lasting up to 50 years without deteriorating. It’s also completely waterproof, so you avoid the ongoing expense of treating it. GRP comes in various colours, and because it’s cold applied, you avoid the Health & Safety risks of heat treatment.

Find asbestos removal in your area

6) Refurbish with a specialist Coating

Coatings provide a permanent and highly effective waterproofing solution in an easy two step process. All loose asbestos fibres and lichen are encapsulated and bound with a Primer. Then a coating topcoat gives long-lasting protection and a completely weatherproof, UV and dirt-resistant roof that’s guaranteed to last for many years. When combined, the two components also encapsulate asbestos fibres and reduce the risk of their release, a comforting thought for all those spending time under the roof.

We’re the UK distributor for a wide range of coatings, meeting the demand for your every budget, desired longevity, climactic restriction and many other factors. We're all about choice, and our experts can provide everything from emergency patch repair to a long-term waterproofing solutions.

Want to learn more about coatings?

Learn more and get a free quote

8 easy ways to repair or refurbish your asbestos roof 8 Easy Ways to Repair or Refurbish Your Asbestos Roof asbestos roof repair 1

7) Over Cladding

When repairing asbestos cement roof damage with sealants or localised repairs isn’t possible, you could consider overcladding, by putting another roof (normally metal) on top of the old roof. This is a proven technique for repairing asbestos roofs and the next best method after coating. In most circumstances you’ll need to comply with current building regulations and add insulation to help reduce heating costs.

Learn more about overcladding your roof

Leaking asbestos roof 8 easy ways to repair or refurbish your asbestos roof 8 Easy Ways to Repair or Refurbish Your Asbestos Roof leaking asbestos roof

8) Repairing Roof Lights

Roof lights will eventually deteriorate, crack, leak, build up mildew and turn dark, so less natural light gets in. Repairing with tape is possible, but not ideal, and will restrict light further. Replacing the roof light is preferred, but working on roof lights is risky, especially if they’re in asbestos roofs.

There’s another solution, involving cleaning and coating the skylights with a tough, clear coating. This will improve the light tremendously and is far cheaper than new skylights. It’s also much less disruptive to your business and avoids having holes in your roof during the work.

Stop your roof lights from leaking with the liquid rubber SuperArmour.

We believe in good honest choices, and providing customers with independent advice about the options open to them. We've helped countless industrial building owners find a solution tailored to their needs, from emergency patch repair to full roof refurbishment, as well as catering for asbestos gutters and internal fibre encapsulation.

This post was taken from http://www.prnewswire.com/news-releases/no-mess-roofing-takes-hassle-out-of-new-roof-installs-300448701.html

CHINA TO INVEST IN WATERPROOFING MEMBRANE MARKET

Waterproofing Membrane Market Outlook: China to emerge as major revenue contributor over 2016-2024

"Europe waterproofing membrane market was the biggest contributor to the total revenue share of the industry in 2014 and contributed more than $ 1800 million. Heavy demand from countries like Russia, Germany, France and Italy are predicted to contribute towards the growth of the industry in Europe."
Waterproofing Membrane Market Size By Application (Sheet Membranes, Liquid Applied Membranes), By End-Use (Building Structures, Roofing, Walls, Landfills & Tunnels), By Product (Polymers, Polymer Modified Cement, Bitumen), Regional Outlook, Growth Potential, Price Trend, Competitive Market Share & Forecast, 2016 2024.

Infrastructural development and the rising demand for durable raw material from the construction sector will fuel Waterproofing Membrane Market across the globe. Furthermore, global waste management, technological innovations, and availability of raw material will drive industry growth. According to Global Market Insights, Inc., ?Waterproofing Membrane Market was valued over USD 5.5 billion in 2015 and is expected to register a CAGR of more than 7% over 2016-2024.

Favorable pricing regulations implemented by the European Commission will provide ample opportunities for industry players to come up with eco-friendly solutions, fueling Europe waterproofing membrane market.

Request for sample copy of this report @ https://www.fractovia.org/request-sample/125

Polymers, bitumen, and polymer modified cement are the types of waterproofing membrane products. Bitumen waterproofing membrane industry size is expected to observe a CAGR of 6.5% over 2016-2024.

Polymers such as EPDM and PVC are flexible, water-resistant, and permeable, owing to which they are widely used in infrastructural development. Global polymer waterproofing membrane market is likely to witness a growth rate of more than 7% over 2016-2024.

In terms of end-users, waterproofing membrane is used in walls, buildings, roofing, and landfills & tunnels. Waterproofing membrane industry size in roofing was worth more than USD 1.6 billion in 2015, driven by the product properties such as load bearing and heat resistance. Waterproofing membrane market size in building structures will grow at a CAGR exceeding 7% over 2016-2024.

Waterproofing membrane find applications in sheet and liquid applied membrane. End users for sheet membrane include wet rooms, bathrooms, roofs, and walls, driven by their properties of cost-effectiveness, safety, and low maintenance. Worldwide sheet waterproofing membrane industry is likely to observe a CAGR of 6% over 2016-2024.

Liquid applied waterproofing membrane is strong, durable, and do not require primers and seam treatment, on account of which they are preferred over prefabricated sheets. Liquid applied waterproofing membrane market size was worth more than USD 4 billion in 2015, with a CAGR estimation of more than 6.5% over 2016-2024.

Make an inquiry for purchasing this report @https://www.fractovia.org/request-purchase/125

Leading players of this industry such as Dow, BASF, and Pidilite are engaged in the production and consumption of raw material required for various product manufacturing operations. Other companies operating in this domain include DuPont, Covestro, CICO Technologies, Sika AG, and Fosroc.

Geographically, U.S. waterproofing membrane market is predicted to grow at a CAGR of more than 5%, driven by strict EPA regulations regarding the usage of fluorocarbons in the manufacturing process.

Rapid industrialization and urbanization will favor China waterproofing membrane industry size, which is likely to exceed 300 million square meters by 2024.

It is important to note that this market is highly fragmented, with many companies establishing their presence across countries such as India and China.

Read More Information Here @ https://www.fractovia.org/news/industry-research-report/waterproofing-membrane-market

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https://www.fractovia.org/news/industry-research-report/personal-protective-equipment-ppe-market

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china to invest in waterproofing membrane market CHINA TO INVEST IN WATERPROOFING MEMBRANE MARKET press stattHIS POST WAS TAKEN FROM: http://www.itbusinessnet.com/

china to invest in waterproofing membrane market CHINA TO INVEST IN WATERPROOFING MEMBRANE MARKET graph 163509 1280

Growth Opportunities in the Global Waterproofing Membrane Market

Growth Opportunities in the Global Waterproofing Membrane Market

growth opportunities in the global waterproofing membrane market Growth Opportunities in the Global Waterproofing Membrane Market hand 895588 1920

ROOFING COMPANIES FINED FOR WORKER’S FALL

ROOFING COMPANIES FINED FOR WORKER’S FALL

Two East Midlands roofing companies have been fined after a member of staff fell through a skylight.

The man suffered life-changing injuries from the nine-metre fall in December 2015 and required surgery to install metal rods in his back.

Coventry Magistrates Court heard how ACG Roofing Ltd had been subcontracted by JDB Industrial Roofing Ltd to complete re-cladding work on the fragile roof. At the time of the incident, no guard rails were being used.

A Health and Safety Executive (HSE) investigation found that principal contractor JDB Industrial Roofing failed to have effective management systems in place to control the risk associated with working at height and on fragile roofing.

The business, of Brooklands Court, Kettering, pleaded guilty of breaching the Construction (Design and Management) Regulations 2015, has been fined £112,000 and ordered to pay costs of £2,216.

ACG Roofing Ltd of High Street, Wellingborough, also pleaded guilty of breaching the Work at Height Regulations 2005. It was fined £35,000 and ordered to pay costs of £1,721.

HSE inspector Edward Fryer said: "This incident could have been fatal; the worker has suffered life changing injuries due to the company failing to properly plan and supervise work at height.

"This case highlights the importance of proper planning, supervision and implementation of work at height especially on fragile roofing."

What is Storm Stella, when will it hit the UK?

 

What is Storm Stella, when will it hit the UK?

KILLER blizzard Storm Stella blanketed the northeast of the US in snow and hammered its shores with 60mph winds.

The snowstorm, which left at least five people dead, is now set to journey across the Atlantic on its way to the UK.

A man in New York appears to be helping to free a yellow taxi that has become stuck

Here’s everything you need to know about the storm before it arrives.

What is Storm Stella?

Storm Stella is a powerful snow blizzard that battered the northeast coast of the USA and plunged it into a state of emergency.

Roughly 50 million people were under a blizzard warning as 60mph winds swept through.

The tail end of the storm is due to hit our shores this weekend – but its force will have significantly weakened.

Snow has only been predicted for some parts of Scotland.

The powerful blast buried northeastern states including Pennsylvania, New Jersey, Virginia and Massachussetts under snow.

At its most intense it caused the death of Ava Doris, 16, who lost control of her car.

The blizzard also claimed the lives of two elderly men in Milwaukee who were shovelling snow on Monday.

A man in Massachusetts was killed in his truck after it was hit by a train in poor visibility conditions.

Boston Mayor Marty Walsh warns residents as Storm Stella blankets Mass

An elderly man in Connecticut died after he was struck by a snowplough, NBC reported.

Stella also caused school closures and the cancellations of 6800 flights as people were urged to stay indoors.

Temperatures were predicted to dip as low as -4C when people were warned of the storm.

Americans in US states such as New York and New Jersey were told to prepare for two feet of the white stuff.

That prediction was later downgraded to between 4 - 8 inches.

1600 snowploughs were deployed to clear the New York streets.

The porn website Pornhub sent snow ploughs to three states to help clear up snow.

Roughly 210,000 people in the mid-west and northeast experienced power outages.

The conditions caused German Chancellor Angela Merkel to postpone a trip to Washington to meet President Trump.

 
New Yorkers in Central Park took the opportunity to play out in the snow

When will Storm Stella arrive in the UK?

The tail end of Storm Stella is set to whip our shores this weekend.

The arrival will come after Brits have enjoyed the hottest day of the year so far on Wednesday.

Temperatures rocketed to 18C with people taking the opportunity to head to the beach or go for a picnic.

The weather was also bright and cheerful yesterday as Stella showed no signs of arriving.

Brits have woken up to sunny weather with a slight chill in the air this morning as the remnants of Storm Stella prepare to take effect.

Spring temperatures may remain as parts of the country feel mild this weekend but the wind is expected to make it feel colder.

Friday will gradually see wind and rain affecting most of the country by the end of the day.

The weekend will continue to be unsettled with rain coming in from the west.

Parts of the weekend will continue to see brighter spells but parts of Scotland are likely to experience snow.

Storms are given their own names in the UK so Stella would be renamed if its effect here was significant enough.

Steven Keates from the Met Office said: "From late Thursday till Sunday it will turn wet and windy across the country and this will last thorough the weekend.

"Wind will strengthen to gale force of up to 60mph on Friday and Saturday in the North West England and Wales."

Temperatures are expected to plunge by Friday and will struggle to reach 9C.

The worst affected areas for gales are predicted to be coastlines in Southern England and the North West.

 
The "Fearless Girl" statue in New York also had to brave Storm Stella's snow and 60mph winds

Where will Storm Stella make landfall?

Scotland and the north are first in the firing line when Storm Stella's remnants sweep through this weekend.

Forecaster Oli Claydon said: "The benign conditions are certainly going to turn as things become more unsettled at the end of the week.

"It is all part of the same system which is currently causing stormy weather in the US, although it won't be anywhere near as vigorous when it reaches the UK.

"But we are going to see a regime change as this low pressure system moves across the Atlantic.

"There will be some rain around on Wednesday although most places will see a dry day; on Thursday the north will get some rain.

"From Friday into the weekend it will turn wet and windy across the country and this will last thorough the weekend."

This post was taken from www.thesun.co.uk

What is Storm Stella, when will it hit the UK? What is Storm Stella, when will it hit the UK? downpour 61916 1920