Belzona 3121 | MR7 | Weather and Waterproofing Systems
A 2-part polymer composite designed to provide emergency roof repair and weatherproofing for leaking roof areas. Belzona 3121 (MR7) is liquid-applied and bonds strongly to all common roofing surfaces including slate roofs, tile roofs, asphalt, felt, asbestos cement sheet roofs and metal roofs, even during adverse weather conditions.
This fast-curing, all climate flexible repair system incorporates a reinforcement sheet which ensures the coating will adapt to roof movements and follows complex roofing contours. This system is water resistant immediately after application and can cure even if fully immersed in water.
Key benefits:
- Can be applied and will cure even during adverse weather conditions
- Simple application method with no primers or conditioners required
- Application and cure as low as 0°C (32°F)
- No hot work involved
- Microporous structure allows trapped moisture to escape whilst providing long-term weatherproofing protection
- Excellent adhesion to a wide range of materials including felt, asphalt, lead, zinc, copper, glass, concrete and brick
- Adapts to roof movements with its outstanding elasticity
- Can be easily applied by brush
Applications for Belzona 3121 (MR7) include:
- Emergency repair of roof lights, gutters, splits in roofing felt, leaking joints and other roof areas
- Sealing of joints and seams to provide weatherproofing and waterproofing
About the Brand:
Belzona specializes in high-performance industrial coatings, repair composites, and maintenance materials, catering to sectors like oil and gas, power, and mining. Their 60+ years in business emphasize durable, easy-to-apply solutions to enhance machinery lifespan, reduce downtime, and cut maintenance costs.
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