Roofing Base Sheet Definition

Certainteed glasbase base sheet is designed for use as a base sheet for both hot and cold applied inorganic built up roofing systems.

Roofing base sheet definition.

It is made of fiberglass or reinforced polyester or composite reinforcement and is saturated coated with modified bitumen asphalt. Base sheet an asphalt impregnated or coated felt used as the first ply in some built up and modified bitumen roof systems. An impregnated saturated or coated felt placed as the first ply in some multi ply built up and modified bitumen roof membranes. As the heated cap sheet is pressed onto the base sheet underneath the two will fuse and form a watertight seal.

A roofing base sheet is the bottom waterproofing layer on a multilayer roofing membrane system. Closure strip this material is used to close the openings that are created by joining metal panels or sheets and flashing. Chapter 15 of the hvhz portion of the florida building code requires that the base sheet be attached to the roof deck with corrosion resistant 1 1 4 ring shank nails and tin caps. Base sheets are surfaced with heat weldable film sand or a.

Lwc pre assembled base sheet fasteners are twin legged expanding base sheet fasteners with 2 7 6 9 cm galvalume coated steel plates. The primary ply of roofing material in a roof system. The smooth cap sheet. Lightweight insulating concrete roof decks with minimum thickness of 1 25 3 18 cm and 1 25 3 18 cm for gypsum decks.

This is asphalt enhanced with plastic or rubber polymer. Next comes the second layer of torch down roofing material. It is suitable for use in the construction of various types of membranes for both new construction and reroofing over a variety of substrates. The base sheet attachment pattern is used for the p1 field of the roof and is specific to each roof assembly and is listed in the md noa for the low slope ur.

Black fasteners grey plates deck type.