Standard Test Method for Surface Water Resistance of Vapor Retarders for Thermal Insulation

Importancia y uso:

3.1 Vapor retarders used on thermal insulation can be exposed to liquid water in normal usage. Some cannot tolerate such exposure without suffering damage. Others are designed to withstand intermittent or occasional exposure in their intended indoor usage. Still others are intended for outdoor applications and exposure to the elements. (not covered by this standard).

3.2 This test is used to evaluate products or materials that are used where exposure to liquid water on the surfaces on an intermittent or occasional basis is possible. Such products would be expected to absorb very little water, if any, in this test.

3.3 In the test, the specimen is exposed to a specified volume of water over a given exposure area, with a resultant head pressure.

3.4 The amount of water absorbed by a specimen is measured in this test. This is used to characterize the water resistance of the specimen. The less water absorbed, the more water resistant the surface is considered to be.

Subcomité:

C16.33

Referida por:

C1136-23

Volúmen:

04.06

Número ICS:

91.100.50 (Binders. Sealing materials), 91.120.30 (Waterproofing)

Palabras clave:

Cobb test; surface water resistance;