ASTM D2626/D2626M-04(2020)

Podrobné informace

Označení: ASTM D2626/D2626M-04(2020)

Datum vydání: 01.05.2020

Stran: 3

Země: Americká technická norma

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Anotace

This specification covers the standard for asphalt-saturated and coated organic felt base sheet with mineral surfacing on the top side, with or without perforations. These sheets are proposed for use as the first ply of a built-up roof and are also suitable for use as vapor retarder. The felt shall be manufactured principally from organic fibers, or mixtures thereof. The surface shall be smooth and uniform and reasonably free of lumps and particles of foreign substances. Physical requirements such as pliability, breaking strength, and water vapor permeance of the materials shall comply with the specifications prescribed herein.


Keywords:
asphalt saturated and coated, built-up roofs, first ply, organic felt,, ICS Number Code 91.100.50 (Binders. Sealing materials)