RapidRoof Pro - PMMA Cold Applied Liquid Waterproofing Roof System

Application overview

Once the surface is cleaned and fully prepared, RapidRoof Pro can be applied using a short piled roller or brush. Surface temperature during application must be between 0°c and 35°c. RapidRoof Pro should always be applied in 2 coats. All areas must be fully primed using RapidRoof Primer and RapidRoof BaseCoat should be fully reinforced using 150gsm reinforcement matting.

Cleaning the substrate

LRS recommend the use of a minimum 2000psi pressure washer to ensure the surface is suitably cleaned. If pressure washing is not possible, the contractor must deem the most appropriate method of cleaning that achieves a similar clean to that of a 2000psi pressure wash.

A clean and dry surface is critical for a successful bond of the RapidRoof system, if the surface is not sufficiently cleaned, RapidRoof will bond to this rather than the substrate it is intended for.

Fully prepared substrate

Ensure the substrate is fully prepared before applying any

RapidRoof Primer or RapidRoof Waterproof. All joints that are over 3mm should be filled using RapidRoof Multi Purpose filler or RapidRoof Pro Detailer. If these joints are not filled, this could lead to pinholes within the waterproofing membrane. All surfaces should be checked for cracks and damage, and repaired where necessary. Any repairs made using water-based concrete/sand cement will need to be completely dry, which is typically 28 days. Using RapidRoof Multi-Purpose Filler will reduce this time to one hour.

Primer

The whole surface requiring waterproofing must be fully

primed using LRS RapidRoof Primer, applied using a short

piled roller or brush, at a coverage rate of 0.3kg per m².

Ensure the RapidRoof Primer is mixed with the RapidRoof

Primer Catalyst for at least one minute, using a drill and

paddle mixer. All details should be primed a minimum

of 150mm up where possible. This will typically cure in 20 minutes. Always leave at least one hour before overcoating.

RapidRoof BaseCoat

RapidRoof should be applied to all details and the main

roof area that requires waterproofing. This must be done in 2 coats, RapidRoof BaseCoat should be applied at a coverage rate of 1.25kg per m² using a short piled roller, and fully reinforced using 150gsm Reinforcement Matting.

The Reinforcement Matting must be fully saturated and

embedded, making sure the membrane is free from

creases and pinholes. Ensure the RapidRoof tins are gridded out over the roof area to allow accurate application of RapidRoof at the prescribed coverage rate.

Snagging

After one hour, the roof should be snagged to remove any

wicks created in the base coat stage of the application.

This can be completed by sanding the wick to remove it

with 80 grit sandpaper or similar, leaving a smooth surface.

RapidRoof TopCoat

RapidRoof TopCoat should be applied at a coverage rate of

0.75kg per m², ensure the tins are gridded out to achieve

the correct coverage rate.