Belzona 3111 | Flexible Membrane | Weather and Waterproofing Systems

Introducing our cold-applied liquid roof coating, specially designed for long-term protection against harsh weather conditions. Our liquid coating provides outstanding waterproofing and weatherproofing properties, making it the ideal solution for protecting your roof.

Our single-component, water-based roof coating is perfect for bonding strongly to all types of roofing materials, and can even follow complex roof contours. Its microporous structure allows the surface to breathe, ensuring optimal protection for your roof.

Our system incorporates a reinforcement sheet, which makes it easy to control the coating thickness during application, while also adapting to roof movement due to its outstanding elasticity. Our liquid coating is suitable for use in schools, hospitals, and public buildings, thanks to its low odour.

Our roof coating is certified by Energy Star and ETA-Danmark (European Technical Assessment), and has been proven to provide excellent protection for roofs for more than 25 years. Trust our liquid coating for long-lasting roof protection.

Key Benefits:

  • Provides long-term roof protection
  • Microporous structure allows trapped moisture to escape whilst providing long-term weatherproofing protection
  • Reduced health and safety risks as it is water-base
  • Lightweight material, will not overload existing structures
  • Excellent adhesion to a wide range of materials including felt, asphalt, lead, zinc, copper, glass, concrete and brick
  • Adapts to roof movements due to its outstanding elasticity
  • Can be easily applied by brush and roller with no mixing required
  • Application and cure at room temperature no hot work involved
  • Energy Star approved as it incorporates special reflective fillers, which reflect sunlight and minimize air conditioning costs

Applications of Belzona 3111, Roof Coating:

  • Creation of waterproof and weatherproof roof surfaces
  • Long-term roof leak repair and protection of deteriorated gutters
  • Sealing of glazing bars
  • Weatherproofing around upstands and other roof protrusions such as skylights, chimneys and vents
  • Replacement of damaged or missing flashings
  • Sealing of gaps and joints on coping stones as well as roof parapet walls
  • Sealing of tank bases

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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