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Significance and Use
4.1 This practice provides general procedures, information, guidelines, and precautions for the application of heat welded modified bituminous waterproofing systems used as part of a new horizontal waterproofing system.
1.1 This practice covers the minimum application recommendations for heat weldable atactic polypropylene (APP) modified bituminous systems used as part of a new horizontal waterproofing system over occupied spaces of buildings where covered by a separate wearing course.
1.2 For the purpose of this practice, the substrate shall be structurally sound, sloped to drain, able to accept the weight of the membrane and other system materials, and meet the local building code requirements. Similarly, all components of the waterproofing system are assumed to comply with any federal, state, and local environmental regulations that may be in effect at the time of installation. Expansion joints, insulation, drainage layers, protection boards, filter sheets, and the wearing surfaces are beyond the scope of this practice.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1079 Terminology Relating to Roofing and Waterproofing
D5295 Guide for Preparation of Concrete Surfaces for Adhered (Bonded) Membrane Waterproofing Systems
ICS Number Code 91.120.30 (Waterproofing)
UNSPSC Code 30151505(Roofing membranes); 30121500(Bituminous derivatives)
ASTM D6950 / D6950M-04(2012)e1, Standard Practice for Application of Heat Weldable Atactic Polypropylene (APP) Modified Bituminous Waterproofing Membranes Systems for New Building Decks, ASTM International, West Conshohocken, PA, 2004, www.astm.orgBack to Top