The Cure It ONE Summer Grade Hardener Pack is designed for use with the Cure It ONE GRP Roofing system. This summer grade hardener is designed for use with a 6kg can of Cure It ONE roofing resin and acts as the catalyst to allow the resin to cure and harden into a durable, waterproof, and weather-resistant surface. The Cure It ONE Summer Hardener is designed to be applied in temperatures typically above 15°C. The summer hardener is formulated to slow down the curing process of roofing resin to help prevent uneven surfaces and trapped air bubbles. The Cure It ONE Roofing System is a single-coat flat roofing system designed to allow for the complete installation of a roof in one single session, with no need for an additional layer of topcoat. It can be applied and cured in half the time of a traditional GRP installation and is suitable for a range of surfaces, such as OSB, felt, asphalt and GRP, without the need for primer.