Frequently asked questions

What to do it rains?

It is advised to always check the weather forecast in advance but for circumstances where rain is an immediate problem, stop application immediately.

Any product applied on a wet surface risks not bonding correctly.

If within the 20-minute curing window, cover up your existing work and wait for a good dry spell to continue. Thoroughly dry coat between applications.

It is advised to always check the weather forecast in advance but for circumstances where rain is an immediate problem

Can we apply different layers on different days?

Rapid Roof does not have to be applied in one day, you can apply one layer at a time if it is necessary.

It is advised to always clean the surface before application of the next layer if there has been such a break from application.

How clean does the surface have to be?

Rapid Roof is a fully bonded system; if there is any dust or dirt on the surface RapidRoof will bond to this.

Ensure the surface is clean by using a high pressure jet wash or similar cleaning method.

Ultimately, each project is unique, and it’s down to the applicator to decide the best method of cleaning for that specific surface.

Do Need to use a flashing or termination bar?

Rapidroof is a self terminating system and can ideally be finished under or on any existing flashing or halfway up a clean and dust free trick course or parapet wall.

How do I become an approved installer?

LRS-Systems run training sessions at regular intervals, here you will be trained on our systems and once completed wine

awarded approved status

Please contact our team to register for one of our training sessions.

Can I slow down the curing process?

Using less or more catalyst can affect curing time, but it may also cause an uneven and incomplete curing of the membrane.

We advise to always stick to the prescribed catalyst to product ratio.

What can I clean my brushes or roller in?

We strongly advise disposing of brushes and rollers after each use, this avoids any contamination occurring in the

membrane and ensures a uniform finish

Due to this we advise using cheap brushes and short pile rollers

Where can i get further information

[email protected]

other information on any of our products and systems please contact our technical team on 01948 841 877 or email

Information and technical data is also available on our website at

Additional information


Keep containers upright and tightly closed when not in use and keep from freezing

Pot life

RapidRoof has a working life of up to 20 minutes depending on atmospheric conditions:

Pot Life

20°C: 15 Minutes Pot life @10’C: 20minutes

Traffic after curing

Light Foot Traffic: 1 hour 20’c Vehicular Traffic: 2 Hours 20°C

Full chemical resistance: 24 hours @ 20°C

Shelf life

RapidRoof has a shelf life of 12 months when stored in original unopened containers.

Catalyst Ratio

The catalyst ratio equates to 2 % of the main product, 20g of catalyst to every 1kg of product

Issue Date 2018