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GRP 5L Hardener Catalyst

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Product Information & Usage

The GRP (Glass Reinforced Polyester) hardener is a high-performance peroxide, that has been formulated for use with GRP resin in flat roofing systems. It is typically added to the resin to reactivate and strengthen it.


  • Cold applied
  • Maintenance-free
  • Fire resistant
  • Storm & frost proof
  • Effectively cleans any GRP tool
  • Removes dust from areas of the roof after the resin coat
  • Durable – resists heavy foot traffic
  • Supplied in 1L and 5L bottles
BrandPrinciPal Building Products
Manufacturer Part NumberGRPRES020
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