In comparison to polyurethane technology, PMMA provide a waterproofing solution with significantly shorter curing times and increased mechanical properties.
Features & Benefits
- Fast curing (trafficable after approximately 1h)
- Application at low temperature (down to -5C°)
- Solvent free solution
What Is PMMA?
PMMA is a two part methyl methacrylate based acrylic resin, which cures very rapidly once the catalyst is added shortly before the application. Hence, both the installer and the end customer benefit from the labour time reduced to minimum. Within just an hour from the application, the surface is fully waterproof and shortly after this time foot traffic is allowed.
PMMA liquid applied waterproofing is a cold applied, flame free system consisting of one coat of primer (if required), PMMA resin coating and a reinforcement made of polyester fleece fabric.
PMMA Waterproofing Applications
PMMA waterproofing coating provides a uniform seamless membrane and can be applied in cooler seasons at temperature as low as -5°C. The coating will adhere to many common construction materials and almost any properly prepared substrate – steel, concrete, old bitumen roofing, etc. It will provide perfectly seamless, durable and resistant waterproofing membrane even on complex and difficult roofs.
PMMA acrylic resin is formulated to meet the demands of specific flame-free applications. Not only is it an ideal solution for roof surfaces of all shapes, it is also particularly useful for flashing and details, such as skylights, fans, balconies, railing supports, terraces or roofs with many penetrations. Due to its resistance against root penetration characteristics it can be successfully used for sealing of green roofs.
Origins Of PMMA Liquid Applied Waterproofing
Polymethyl methacrylate resins were first synthesized in 1930’s and they quickly made their way to practical applications as the material proved to be exceptionally durable.
Firstly too rigid to be applied as flexible coating, it took some time before it was used in roof waterproofing. It was in 1970’s that a special PMMA formulation was developed to meet the performance standards of flexible and resilient waterproofing coating.
Now PMMA advantages are particularly appreciated by roofers and installers on jobs with difficult access, roofs with multiple penetrations, when flame-free application is required and short curing time is essential.
PMMA liquid roofing solutions are also a perfect choice for areas requiring resistance to certain substances that may negatively affect traditional roofing products: vegetable oils, environmental contaminations, foot traffic, UV impact.