Acrypol Flexiglass vs Cromar ProGRP: Flat Roofing System Comparison
When selecting a high performance flat roofing system, both Acrypol Flexiglass and Cromar ProGRP deliver exceptional protection, durability, and weather resistance. Each system combines a specialist resin with glass fibre chopped strand matting (CSM) to produce a fully weatherproof, frost-proof, heat-resistant, and fire-retardant finish. However, their physical properties and application requirements suit distinctly different project demands.
Acrypol Flexiglass
Acrypol Flexiglass is engineered for enhanced flexibility, allowing the cured surface to accommodate the thermal expansion and contraction caused by seasonal temperature changes.
- Reinforcement and Handling: Uses a lightweight 225 gsm matting, which contributes to the finished system's structural flexibility.
- Application Efficiency: The resin is applied using a standard medium-soft roller and does not require a bubble buster (consolidation) roller. Unlike traditional GRP systems, Flexiglass uses a single resin formulation for both the base laminate and the topcoat, removing the need for a separate finishing resin.
- Weather and Substrate Adaptability: Formulated for application in lower ambient temperatures, the resin remains resilient to rain during the curing process. If exposed to rainfall before curing completes, the surface simply requires an acetone wash before applying a fresh coat.
- Refurbishment Capability: Thanks to its high adhesive properties, Flexiglass can be applied over most existing roofing substrates including failed GRP roofing. When paired with Flexiglass Primer, it adheres effectively to porous or challenging surfaces, including concrete and aged felt.
Cromar ProGRP
Cromar ProGRP provides a rigid, heavy duty finish designed for maximum structural strength and impact resistance.
- Reinforcement and Finish: Incorporates a heavier 450 gsm matting to create a solid, highly durable laminate. The cured surface withstands regular foot traffic, and non-slip aggregates can be sprinkled into the final topcoat to enhance traction.
- New Build Application: ProGRP is designed to be applied to new OSB3 boards (Oriented Strand Board) and OSB3 T&G (Tongue and Grove) boards. Once fully cured, the roof offers complete resistance to wind uplift.
-
Strength and Performance: ProGRP is a popular choice for new build construction. When installed by a certified contractor, the system is backed by a 25-year manufacturer warranty.
To view more details, click the link below:
