Product Description

Cromar PROGRP Hardener (catalyst) – 5kg

The Cromar PROGRP Hardener is a high-activity MEKP (Methyl Ethyl Ketone Peroxide) catalyst specifically formulated for use with the Cromar PROGRP resin and topcoat systems. This hardener initiates the curing process, ensuring a consistent, strong, and durable finish across all GRP roofing applications. Perfectly balanced for reliability and ease of use, this 1kg size is ideal for small to medium roofing jobs, offering precise control and dependable performance in varying weather conditions.

Why Choose ProGRP Resin?

Trusted by professionals across the UK, Cromar ProGRP Resin is the backbone of one of the most reliable GRP flat roofing systems on the market.

Key Features:

• Fast, Controlled Curing: Activates resin and topcoat curing for a strong, seamless bond.
• Optimised for PROGRP Systems: Fully compatible with Cromar polyester resin and topcoats.
• Temperature Tolerant: Adjustable dosage based on ambient conditions for year-round use.
• High Reactivity: Use with care – always follow safety guidelines and mixing ratios.

Typical Mix Ratio:1%–4% depending on temperature and working time requirements(Always refer to the Cromar PROGRP installation guide for precise ratios)