ASTM E3127-22
Standard Guide for Specifying Water Vapor Transmission Material Properties of Water-Resistive Barriers and Air Barriers
- Standard No.
- ASTM E3127-22
- Release Date
- 2022
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM E3127-24
- Latest
- ASTM E3127-24
- Scope
- 1.1 This document provides guidelines for specifying water vapor transmission (WVT) properties for above-grade waterresistive barriers and air barriers (WRB/AB), typically installed between building structural components and cladding that compose the exterior side of building envelopes in North America. 1.2 This guide applies to all types of water-resistive barrier and air barrier products, including multifunctional products, regardless of the manufacturing process, type of material, or installation technique. 1.3 This guide provides general provisions for specifying and reporting the water vapor transmission properties of WRB/AB determined by standardized test methods, in accordance with in-service conditions these products typically experience within building envelopes. 1.4 It is beyond the scope of this guide to optimize the water vapor transmission characteristics of WRB/AB for specific conditions of use. The specific conditions of use should account for variations in indoor and outdoor climates, cladding type, moisture storage capacity of cladding materials, thermal insulating measures for wall and roof assemblies, air movement, and vapor diffusion control strategies. 1.5 This guide does not address proper installation and integration of WRB/AB with other wall and roof components. 1.6 The values stated in inch-pound units are to be regarded separately as standard. Within the text, the SI units shown in parentheses are provided for information only. The values stated in each system are not exact equivalents; therefore, each system shall be used independently. Combining values from two systems may result in non-conformance with the standard. However, derived results can be converted between systems using appropriate conversion factors (see Table 1). 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.
ASTM E3127-22 Referenced Document
- ANSI/ASHRAE 160 Criteria for Moisture-Control Design Analysis in Buildings*， 2023-02-17 Update
- ASTM C1289 Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
- ASTM C168 Standard Terminology Relating to Thermal Insulation
- ASTM C578 Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation
- ASTM D1079 Standard Terminology Relating to Roofing and Waterproofing
- ASTM D1653 Standard Test Methods for Water Vapor Transmission of Organic Coating Films
- ASTM D226/D226M Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing*， 2023-02-01 Update
- ASTM D3833/D3833M Standard Test Method for Water Vapor Transmission of Pressure-Sensitive Tapes
- ASTM D779 Standard Test Method for Water Resistance of Paper, Paperboard, and Other Sheet Materials by the Dry Indicator Method
- ASTM E2556/E2556M Standard Specification for Vapor Permeable Flexible Sheet Water-Resistive Barriers Intended for Mechanical Attachment*， 2022-10-01 Update
- ASTM E3054/E3054M Standard Guide for Characterization and Use of Hygrothermal Models for Moisture Control Design in Building Envelopes*， 2023-01-01 Update
- ASTM E398 Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement
- ASTM E631 Standard Terminology of Building Constructions
- ASTM E96/E96M Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials*， 2024-03-01 Update
- ASTM F1249 Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor
ASTM E3127-22 history
- 2024 ASTM E3127-24 Standard Guide for Specifying Water Vapor Transmission Material Properties of Water-Resistive Barriers and Air Barriers
- 2022 ASTM E3127-22 Standard Guide for Specifying Water Vapor Transmission Material Properties of Water-Resistive Barriers and Air Barriers
