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ASTM D8518-25
Standard Guide for Application of Hot-Applied Rubberized Asphalt Roofing and Waterproofing
Standard Guide for Application of Hot-Applied Rubberized Asphalt Roofing and Waterproofing
D8518-25
ASTM|D8518-25|en-US
Standard Guide for Application of Hot-Applied Rubberized Asphalt Roofing and Waterproofing
Standard
D8518 Standard Guide for Application of Hot-Applied Rubberized Asphalt Roofing and Waterproofing>
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BOS Vol. 04.04 Committee D08
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ASTM International
Significance and Use
4.1 Establishing standard practices and recommended procedures is a critical step required to achieve quality roofing and waterproofing system installations. This guide describes preparing typical substrates to receive hot-applied rubberized asphalt (HRA), melting and application of HRA, typical membrane flashing applications, and provides a discussion of associated materials installed with HRA membrane roofing and waterproofing systems.
4.2 This guide includes a limited discussion about installing HRA membranes in the coldest temperatures allowed by manufacturers; however, it otherwise does not specify how ambient conditions such as temperature, humidity, and dew point may affect the installation and performance of HRA membranes. It is recommended that all project-specific site conditions are reviewed by the project team prior to application of HRA.
4.3 This guide reviews several field practices used to check for the presence of surface moisture prior to application of HRA membranes. A discussion of how moisture content in concrete affects adhesion of HRA membranes is beyond the scope of this guide.
4.4 This guide does not include recommendations for overburden installed over HRA membrane roofing and waterproofing, such as vegetated roofs, asphalt or concrete paving, insulation, and precast concrete pavers. However, where HRA is used beneath concrete topping or asphaltic concrete, such as in vehicular traffic-bearing conditions, additional installation measures may be required. In such cases, designers should consult with manufacturers to confirm additional installation and/or detailing requirements.
4.5 The contract documents and/or manufacturer of the HRA material may require more specific or strict procedures for surface preparation and application of the HRA membrane than provided in this guide.
4.6 This guide applies to both fabric-reinforced and unreinforced HRA roofing or waterproofing assemblies. Fabric-reinforced HRA roofing and waterproofing is the predominant HRA system currently used in the industry for the redundancy and robustness it provides.
Scope
1.1 This guide provides recommended procedures for the installation of hot-applied rubberized asphalt (HRA) membrane for roofing and waterproofing applications in areas where it will be protected from sunlight and potential physical damage.
1.2 This guide applies to fabric-reinforced HRA membranes and unreinforced HRA membranes installed over substrates approved by the HRA manufacturer.
1.3 This guide is intended primarily for new construction, but includes general guidelines for installations on existing sound structural concrete and panelized substrates deemed in good condition by the project team and HRA membrane manufacturer.
1.4 Typical applications include protected membrane roofing systems and waterproofing concrete slab construction on plaza decks, parking garages, roof terraces, pedestrian concourses or podiums, foundation walls, bridge decks, reflective pools, and planters.
1.5 This guide is not intended for Specification D6152/D6152M SEBS-modified mopping asphalt.
1.6 Values stated in SI units are to be regarded as the standard. Values given in parentheses are for information only.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.