What is a Microporous Membrane?

Microporous membranes are permeable membranes, designed to prevent water ingress whilst also allowing trapped moisture underneath to escape.  They protect interiors and structures from leaks, safeguard people and equipment as well as prevent damages in industrial facilities. 

Explore Belzona Microporous Membranes

Belzona adopts microporous membranes in the development of waterproof and weatherproof coatings for emergency roof repair, insulation protection, tank base sealing, and concrete waterproof coating. These membrane coatings help mitigate  maintenance issues in buildings and structures by providing strong adhesion and ensure a long-term protection against adverse temperatures, sunlight, rainwater, and other atmospheric factors. 

Benefits of Belzona Microporous Membranes

• Low odor systems: Its low odor properties enable applications during working hours without any disruptions to operations.

• Excellent adhesion: Belzona microporous membrane coatings can adhere to a wide range of substrates including felt, asphalt, lead, zinc, copper, glass, concrete, brick and metal.

• Weatherproofing and UV protection: The range of Belzona microporous membranes provides outstanding weatherproofing and waterproofing properties, along with solar-reflectance properties to enhance energy efficiency.

• Breathable membranes: The membranes prevent water ingress under substrates while allowing trapped water to escape.

• Corrosion resistance: Belzona vapor-permeable flexible membranes allow vapor to escape, reducing moisture accumulation and mitigating corrosion. Our solutions help prevent stress corrosion cracking at tank base sealing.  Plus, our fire-resistant membrane coating can enhance the protection of thermal insulation components, preventing corrosion under insulation (CUI).

• Ease of Application: Belzona membranes, including spray-applied waterproofing, can be applied easily by spray or hand, making them ideal for covering both small and large areas.

How to Use Microporous Membranes

Belzona membranes, applicable on complex geometries, can seal deteriorated sections on buildings and structures, and ensure protection for the long term. Additionally, Belzona recommends using suitable reinforcement sheets in conjunction with the membranes as they bond with the substrate beneath for a stronger and durable protection.  

Belzona membranes such as Belzona 3111 (Flexible Membrane), Belzona 3121 (MR7) and Belzona 3131 (WG Membrane) can resist to water, protecting roof surfaces and structures from atmospheric attacks.

Unlike other traditional solutions, Belzona 3121 (MR7) carries superior properties. This particular system can resist to rain wash immediately after the application, allowing the system to cure despite wet conditions.

Belzona 3211 (Lagseal), fire-resistant membrane, is an ideal solution for thermal  insulation protection, cladding protection, and preventing damages on insulation components. The system is a single component water- based coating allowing the application to be easy and simple.

In the below video, we put these membranes to the test and demonstrate their fast-curing and water proof properties, as well as their adhesion and elongation capabilities.