The Flat Roofing Shop
Cromar Pro GRP Resin - 10kg & 20kg
Cromar Pro GRP Resin - 10kg & 20kg
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Base laminate resin for the Pro GRP flat roofing system.
Cromar Pro GRP Resin is the laminating resin used to form the reinforced base layer within the Pro GRP fibreglass roofing system.
Used in conjunction with 450gsm or 600gsm chopped strand mat (CSM) and Pro GRP Catalyst, it creates the structural waterproof membrane prior to the application of Pro GRP Top Coat.
Available in 10kg and 20kg tins.
System Role ▸
Pro GRP Resin forms the base laminate of the roofing system.
When combined with reinforcement matting and catalyst, it cures to create:
- A seamless waterproof layer
- A rigid, impact-resistant surface
- A durable base ready for top coating
It is not a general-purpose resin - it is formulated specifically for flat roof applications.
Where It’s Used ▸
- New flat roof installations
- Garage roofs
- Extensions
- Dormers and vertical detailing
- Refurbishment projects
Cold applied on site with no heat required.
Performance Characteristics ▸
- Designed for roof temperature variation
- Cold applied system
- Strong, impact-resistant cured finish
- Suitable for heavy foot traffic when correctly installed
- Fire retardant as part of full system build-up
Once cured and top coated, it forms a tough, weatherproof membrane resistant to water, frost and heat.
Coverage & Application ▸
- Typical coverage: Approx. 1.5kg per m²
- Used with 450gsm (standard) or 600gsm (heavy duty) CSM
- Catalyst added according to deck temperature
- Fully consolidated using paddle roller
Correct mixing and consolidation are essential for structural laminate performance.
Summary ▸
Cromar Pro GRP Resin is the core laminating component of the Pro GRP flat roofing system. Used with reinforcement matting and catalyst, it forms the seamless base membrane prior to top coating, delivering a durable and impact-resistant waterproof finish.
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