Membrane flashing strips cut to specific widths used to seal/flash perimeter edge metal and the roof membrane application of felt strips cut to narrower widths than the normal felt-roll width to cover a joint between metal perimeter flashing and built-up roofing.
Tag: membranes
Film
Sheeting having a nominal thickness not greater than 10 mils (0.25 mm).
Ice Dam Protection Membrane
A continuous membrane installed under steep slope roofing materials in areas subject to ice damming that prohibits water which gets through the roof covering from getting into the structure. Must also seal the fasteners that penetrates it.
Loose-Laid Membrane
A ballasted roofing membrane that is attached to the substrate only at the edges and penetrations through the roof.
Mechanically Fastened Membranes
Generally used to describe membranes that have been attached at defined intervals to the substrate.
Membrane
A flexible or semi-flexible roof covering or waterproofing whose primary function is to exclude water
Reinforced Membrane
A roofing or waterproofing membrane that has been strengthened by the addition or incorporation of one or more reinforcing materials, including woven or nonwoven glass fibers, polyester mats or scrims, nylon, or polyethylene sheeting.
Self-Adhering Membrane
A membrane that can adhere to a substrate and to itself at overlaps without the use of an additional adhesive. The undersurface of a self-adhering membrane is protected by a release paper or film, which prevents the membrane from bonding to itself during shipping and handling.
Thermoplastic Olefin Membrane (TPO)
A blend of polypropylene and ethylene-propylene polymers. Colorant, flame retardants, UV absorbers, and other proprietary substances which may be blended with the TPO to achieve the desired physical properties. The membrane may or may not be reinforced.