insulation board must first be installed to help with energy costs. The membrane is installed in rows (6-18′), each of which must be hot-air welded at the seams. Many contractors choose to mechanically fasten the edges to help prevent uplift.
Manufacturers try to avoid seams with EPDM membrane sizes that can reach 50′ wide by 200′ long. These huge pieces are great for avoiding possible leaks at the seams, but these wide rolls are also very difficult to handle during the installation. EPDM membranes install like a giant sticker, but this must be done slowly and with precision to avoid air bubbles
Insulation boards are first fastened to the roof substrate. TPO also comes in rolls and can be mechanically fastened to the insulation boards or installed with the self-adhesive.
modified bitumen is a type of membrane roofing that’s installed in multiple layers, each of which is torched to the surface below at every ¼ turn of the roll. This is a very labor intensive process that absolutely must be performed by a professional.
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The installation includes applying multiple layers of ply sheets that are bonded together using hot asphalt. The top layer can be a reflective coating for energy efficiency or gravel for added durability.
Applying a spray to a roof sounds easy. The material can be applied right over an existing roof so little to no prep work is needed besides cleaning. It’s still important to apply the spray evenly and delicately though.