Ensure a professional, rapid cure for your fibreglass roofing projects with Cromar Pro GRP Hardener (1kg). This essential liquid catalyst (MEKP) is specifically formulated to initiate the chemical reaction in GRP resins and topcoats, providing a durable and weatherproof finish. Designed for use with the Pro GRP roofing system, it allows for adjustable curing times based on ambient temperatures. Shop specialized Cromar Pro GRP hardware at ECO Heat Shop for trade-quality roofing supplies and fast UK delivery.
£7.50 Incl. VAT
The Cromar Pro GRP Hardener 1kg is a critical component of the Pro GRP Advanced Glass Fibre Roofing System. Without a high-quality catalyst, resins remain tacky and fail to provide the structural integrity required for a flat roof. At ECO Heat Shop, we provide the industrial-strength hardware and chemical accessories that tradespeople and advanced DIYers rely on for leak-proof, long-term roofing solutions.
While primarily designed for roofing, this 1kg hardener is a versatile accessory for a wide range of composite tasks, including marine repairs and automotive bodywork. Its liquid form allows for precise measurement and thorough integration into the resin, preventing “soft spots” in the finished laminate. Whether you are installing a new GRP roof or performing essential maintenance on a fibreglass structure, Cromar ensures a finish that is impact-resistant and thermally stable.
ECO Heat Shop Tip: Temperature is key when using GRP hardener. In colder weather, you may need a slightly higher percentage (up to 3%), whereas in direct summer heat, 1% is often sufficient. Never mix more than you can apply in 15–20 minutes. Proper measurement is the most sustainable way to avoid wasted resin and ensure a roof that lasts for decades without maintenance.
Achieve a rock-solid finish on every roof. Order Cromar Pro GRP Hardener 1kg online today for professional roofing hardware delivered across the UK.
| Weight | 0.44 kg |
|---|---|
| Dimensions | 12 × 7 × 7 mm |
ECO Heat Shop Ltd provides national distribution for plumbing and heating supplies across England, Scotland, and Wales. Orders placed before the 18:00 PM (Afternoon) cutoff are typically processed for same-day dispatch.
View Full Shipping & Collection Policy ›Hours: Monday – Saturday: 08:30 AM – 06:30 PM | Sunday: Closed
Location: Unit 8 West Cross Shopping Centre, Oldbury Rd, Smethwick, B66 1JG
In-shop precision key cutting available during standard operational hours. Professional while-you-wait service for Smethwick residents and trade contractors.
Smart supplies for real heat.
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