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Scope

1.1 The purpose of this guide is to provide advice for the selection of asphalt used in the construction of built-up roofing (BUR). This guide does not address the use of asphalt in waterproofing, cold-applied, or modified bituminous roofing.

1.2 Reinforcements considered for use with roofing asphalt include ply sheets, (see Specifications D 226, D 2178, and D 5726), base sheets (see Specifications D 2626, D 4601, and D 4897), and cap sheets (see Specification D 3909). They consist of glass, organic, or synthetic fibers.

1.3 The use of asphalt in the placement of vapor retarders and rigid roof insulation also is addressed.

Significance and Use

This guide supersedes the slope guidelines of Appendix X1 of Specification D 312.

Hot-applied roofing asphalt serves both as the waterproofing agent and adhesive for construction of built-up roofing membranes. There are many variables that may affect the performance of BUR membranes. This guide provides general specification guidelines for the asphalt only.

Keywords

asphalt; built-up roofing; equiviscous temperature; glaze coat; interply bitumen; slippage; slope; ICS Number Code 91.100.50 (Binders. Sealing materials)

To find similar documents by ASTM Volume:

04.04 (Roofing and Waterproofing)

To find similar documents by classification:

91.100.50 (Binders. Sealing materials Including geomembranes, asphalts for buildings, etc.)

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