Waterproof Breathable Membrane

Sometimes, the most important part of a roof can be what’s directly underneath it. That statement doesn’t refer to the attic or crawlspace of a building, but rather the waterproofing membrane that goes beneath the steel roofing. Metal roofers choose their construction membranes very carefully, making sure to apply the material that can best protect a home. Roofing contractors in Toronto need to use a waterproof breathable membrane to obtain the best results.

During a metal roof installation, a construction membrane provides protection from rain and other elements. After the installation, it serves as another layer of protection from moisture. The best waterproofing membrane construction sheets currently available are the C130 waterproof membrane and the FPP100/FPP130 waterproof and heat resistant membrane. Each roof membrane provides water and moisture resistance while also offering a degree of breathability so the roof doesn’t restrict airflow. The C130 membrane uses three layers of highly breathable material, while the FPP100/FPP130 includes polypropylene and aluminum foil to protect from particularly hot conditions.


Waterproof breathable membrane

Three layer highly breathable, fully waterproof membrane constructed from high tensile spun-bonded polypropylene layers, around a microporous polypropylene film.


Waterproof and heat resistant membrane

Nonwoven fabric laminated with polypropylene and aluminum foil

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ZIM Group certainly blew us away with the job they did on our roof recently. The whole job was so professional from start to finish and we cannot recommend them highly enough to anybody else who needs a metal roof built for them.
Brian Maple / Toronto Read more