ASTM C1258-19
- Standard Test Method for Elevated Temperature and Humidity Resistance of Vapor Retarders for Insulation
- standard by ASTM International, 04/15/2019
- Category: ASTM
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1.1 This test method covers the determination of the resistance of flexible low permeance vapor retarders for thermal insulation as classified in Specification C1136 to elevated temperature and humidity. Water vapor permeance measurement and visual inspection after exposure at elevated temperature and humidity are used to assess vapor retarder response.
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