557 Polyroof EC is a solvent based, moisture triggered urethane coating designed to provide flexible, long term waterproofing for roofs, gutters, and external surfaces. Supplied as a single component system, it cures to form a seamless, elastomeric membrane that adheres to GRP, asbestos, concrete, felt, and metal substrates.
Reinforced with glass fibre matting during application, the coating forms a tough, resilient barrier that withstands movement, weathering, and environmental exposure. It cures at temperatures as low as 5°C (41°F), making it ideal for year round use, including colder climates and urgent repair conditions.
Key Features
- Moisture cured, flexible waterproof membrane
- Cures from 5°C (41°F), ideal for cold weather application
- Used with 225gsm glass fibre for added strength
- Compatible with GRP, felt, concrete, metal, and asbestos roofing
Typical Applications
- Roofs
- Gutters
- Fibreglass structures
Real World Applications
Find out how 557 Polyroof EC has delivered reliable results in real-world repairs by exploring our case studies.
Documents & Resources
Access all product documentation and information via the links below.
Information & Enquiries
Our products are supplied to over 60 countries worldwide and are used by some of the largest companies globally.
For more information and technical data please contact us.
