P1 Liquid Membrane 20-Year System Specification
P1 Flexible Hybrid Polymer
Designed for speed, simplicity and long-term waterproofing performance.
What is P1?
P1 is a next-generation liquid waterproofing system engineered for installers who want speed, simplicity and long-term performance without unnecessary complexity.
Built around advanced flexible hybrid polymer technology, the P1 system creates a seamless, fully reinforced waterproof membrane for new roof decks and overlay applications. With rapid-curing chemistry, GSM reinforcement as standard and a clear, consistent installation method, P1 is designed to make liquid roofing easier to specify, easier to install and easier to trust.
A different approach.
Most roofing systems are complicated. Multiple products, multiple chemistries and multiple installation routes can create confusion on site and increase the risk of inconsistency.
P1 takes a different approach. It is a focused, installer-friendly liquid roofing system built around one core resin, and one clear standard of performance. Every component is designed to work together, helping installers deliver a seamless, durable and fully adhered waterproof finish with confidence.
One core resin system
Clear installation process
Designed for consistency
Product guarantee available when installed by approved installers.
Key features.
A simple, high-performance liquid waterproofing system designed for practical installation, reliable reinforcement and long-term protection.
One resin system
Built around a flexible hybrid polymer resin that forms the core waterproofing membrane.
Fast curing chemistry
RapidCure chemistry supports faster installation, keeping the system practical for busy roofing environments.
New decks & overlays
Suitable across a wide range of prepared roof substrates, including overlay and new deck applications.
Certified fire performance
The system includes BROOF(t4) fire performance certification.
20-year guarantee
Supported by a 20-year product guarantee, or workmanship guarantee when installed by approved installers.
GSM reinforcement
Reinforcement mat is included as standard, adding mechanical strength across the membrane.
A simple overlay system
P1 is intentionally minimal. The system uses a clear process that keeps installation straightforward while delivering a fully reinforced liquid waterproofing membrane.
Prepare
Clean and check the substrate is suitable.
Prime
Apply correct primer where required to improve adhesion.
First coat
Apply P1 Resin and embed reinforcement mat into wet resin.
Second coat
Seal the system to create the finished waterproof membrane.
Fully reinforced. Fully sealed. Ready to perform.
A clear, repeatable liquid roofing process designed to help installers work with confidence.
Everything you need. Nothing you don’t.
The P1 system is made up of four essential components that are engineered to work together.
P1 Universal Primer
Used where required to support adhesion on asphalt, concrete, brickwork, masonry and felt.
P1 CAT Powder
Controls the curing process of the P1 primer and resin, with the quantity adjusted according to the installation temperature.
P1 Reinforcement Mat
Adds mechanical strength throughout the waterproofing membrane and helps the system achieve its certified performance.
P1 Resin
Forms the flexible, impact-resistant and UV-stable waterproofing membrane that protects the completed roof.