Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation

Importancia y uso:

9.1 Entrapment of water in thermal insulation caused by condensation of water vapor that has penetrated into the insulation is detrimental to the thermal resistance of the insulation. For this reason, in certain installations where temperature and moisture conditions have the potential to create a vapor driving force toward the insulation, a deterrent to the passage of such vapor into the installed insulation needs to be provided. This is the primary function of the vapor retarder.

9.2 In addition to the function stated in 9.1, a vapor retarder has the potential to provide physical protection and added strength to the insulation system.

9.3 This specification is used to specify material by physical property requirements that address the above prerequisites. The designer of an insulation system, after determining the degree of protection needed for the insulation, can use this specification to specify the appropriate type of vapor retarder when one is required.

Subcomité:

C16.33

Referida por:

C1393-19, C1423-21, C0755-20, C1290-16R21, C0592-22A, C1258-21A, C1484-10R18, C0553-13R19, C1263-95R21, C0991-23, C0612-14R19, F3319-20, F3562-24

Volúmen:

04.06

Número ICS:

91.100.60 (Thermal and sound insulating materials)

Palabras clave:

flexible; low permeance; thermal insulation; vapor retarders ;