sterlingbuild mobile logo

Cromar PRO GRP Hardener/Catalyst - 5kg

Product Code:
Estimated Delivery:
1 working day

Our price today, excluding delivery and VAT is

£38.22 inc. VAT £31.85

Product Description

Cromar liquid catalyst is a medium reactivity hardener, recommended for use with Cromar resin in the PRO GRP flat roofing system.


  • Fire retardent
  • UV-resistant
  • Weatherproof
  • Fully bonds to the roof membrane to form one complete system
  • Special additives to give an especially low styrene emisson
    • During and after application
  • Available in 2 sizes
    • Flexibility
    • Minimises wastage


  • This product should be added at 1% or 2%, depending on the required cure time
  • Ideal for large or small flat roofs
  • Suitable for heavy foot traffic
  • Load bearing
  • Applied by brush/roller
  • Apply 1-2 coats
  • Cold-applied 

Product details

Coverage 1 x 500g hardener will cover 20kg of topcoat (on average)
Note When adding the catalyst to the resin, always mix well to ensure an even distribution. One minute stirring is recommended.
  Alway test catalyst additions with your first mix and adjust up or down as required.

Product Specification

Brand Cromar
Colour Clear
Flash Point >80°C
Form Liquid
pH 4 – 7
Product Fibreglass (GRP) roofing
Product Type Sealants & treatments
Shelf life 12 months
Size 5kg
Specific Gravity 1.10 – 1.13
Viscosity 19 – 22 mPa s (cP)

Delivery, Cancellation & Returns

For our delivery, cancellation and returns policy.