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Cromar PRO GRP Hardener/Catalyst - 5kg

Product Code:
Manufacturer Code:
Estimated Delivery:
1 working day

Our price today, excluding delivery and VAT is

£39.00 inc. VAT £32.50

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.

Delivery charges are included in the final shopping basket total and will depend on the basket's contents. Additional shipping charges may apply to orders from the Scottish Highlands and UK islands.

These extras delivery charges are based on certain costs from the manufacturer, distributor or our own couriers. Not all products will be applicable.

If additional shipping fees apply, a member of our team will contact you before processing your order to let you know.

We will do our very best to make sure your delivery arrives by the date required, however manufacturer availability and delivery schedules cannot always guarantee this.

Should your estimated delivery date differ from that displayed on our website, one of our team will inform you by email or telephone

If we cannot make a delivery due to access not being possible, we reserve the right to make a failed delivery charge.