Ensure a perfect cure for your roofing projects with Cromar Pro GRP Hardener. This premium-grade liquid catalyst (MEKP) is specifically formulated to activate Cromar Pro GRP Roofing Resins and Topcoats, providing a rock-hard, weatherproof finish.
Essential Catalyst: Required to trigger the chemical curing process in GRP resins and gelcoats.
All-Season Performance: Reliable curing across a wide range of UK temperatures when mixed at the correct ratio.
Trade Strength: High-purity MEKP formula ensures maximum structural integrity for flat roofing systems.
£7.50 Incl. VAT
Cromar Pro GRP Hardener (Methyl Ethyl Ketone Peroxide) is the vital component in any Glass Reinforced Plastic (GRP) roofing system. Without this liquid catalyst, the base resin and topcoat remain in a liquid state. When added to the resin, it initiates a chemical reaction that transforms the liquid into a durable, glass-reinforced laminate, creating a seamless and 100% waterproof flat roof.
At ECO HEAT SHOP, we understand that the success of a GRP roof depends on the cure. This 1kg hardener is designed for use with the Cromar Pro GRP range, offering consistent gel times and a predictable hardening process. Whether you are laminating large deck areas or applying a final UV-resistant topcoat, this catalyst ensures the system achieves its full mechanical strength and longevity.
One of the key advantages of Cromar Pro GRP Hardener is its adaptability to the British climate. The amount of hardener required varies based on the ambient temperature (typically ranging from 1% to 4%). By adjusting the dosage, contractors can control the “open time” of the resin, allowing for sufficient application time in summer or a faster kick-start during colder winter installations.
Weight: 1kg Bottle.
Chemical Type: MEKP (Methyl Ethyl Ketone Peroxide).
Compatibility: Exclusively for use with Cromar Pro GRP Resins and Topcoats.
Safety: Highly flammable and corrosive; must be handled with protective gloves and eyewear.
Application: Measured precisely using a catalyst dispensing bottle for accurate mixing.
Accurate Measurement: Never “eyeball” the mixture. Always use a scale or graduated dispenser to meet the 1%–4% ratio recommended by the manufacturer.
Thorough Mixing: Stir the hardener into the resin for at least 2 minutes to ensure an even chemical distribution.
Small Batches: Only mix what you can apply within 15–20 minutes to avoid the resin “going off” in the bucket.
Storage: Keep the bottle tightly sealed in a cool, dark, and well-ventilated area, away from direct sunlight and combustible materials.
| 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.
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