Belzona 3121 (MR7)
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
* All products are subject to regional restrictions. Check with your local Distributor for more information
What common problems cause roof leaks that Belzona 3121 (MR7) can fix?
Roof leaks often occur due to aging or damaged roofing materials, failed joints and seams, cracked flashing, or weather-related wear and tear. Issues like these allow water to penetrate the roof, leading to internal damage and urgent repair needs.
How does Belzona 3121 (MR7) address these roofing problems?
Belzona 3121 (MR7) is a liquid-applied, two-part polymer composite designed for emergency roof repair and weatherproofing. It bonds strongly to a wide range of roofing surfaces—including slate, tile, asphalt, felt, asbestos cement, and metal—even in adverse weather conditions. Its fast-curing, flexible system incorporates a reinforcement sheet, adapting to roof movements and complex contours, and provides instant waterproofing, even if applied during rain or on wet surfaces.
What are the key features that make Belzona 3121 (MR7) effective for roof leaks urgent repairs?
Can be applied and will cure in wet or cold weather, providing immediate water resistance.
Requires no primers or conditioners and is easily applied by brush.
Forms a seamless, flexible membrane that adapts to roof movement and resists further leaks.
Bonds to most common roofing materials, making it suitable for various emergency repairs such as sealing leaks, joints, seams, gutters, and cracks.
These features make Belzona 3121 (MR7) an ideal solution for quickly and effectively addressing the root causes of roof leaks and preventing further water ingress.
More information:
For more information about Belzona 3121 (MR7) contact us or find your local
distributor.
You can apply to join Belzona Connect to access additional
information including SDS and instructions for use.