JIS A 1438:1992 PDF

Scope: This standard specifies the test method for evaluating the water resistance of architectural exterior wall boards (2) by water absorption or repeated water absorption and drying. Note () Exterior wall boards are man-made non-metallic plates molded into plate shapes in factories used to finish the exterior walls of buildings, with a thickness of 30 mm or less, and hollow products made by extrusion molding etc. except. () Water resistance refers to the degree to which exterior wall boards absorb water from external rainwater or condensation, and dry out due to outside air, and the extent to which the physical performance of boards changes when these effects occur singly or repeatedly. say. Remarks 1. This standard specifies test methods, and the types of tests to be applied, the number of test repetitions, and other conditions not specified in this standard are as specified in material standards, product standards, etc. . However, for items that are not specified, it will depend on the agreement between the parties concerned.

JIS A 1438:1992 history

2008 JIS A 1438 AMD 1:2008 Test methods for water resistance of exterior wall boards for building (Amendment 1)
1992 JIS A 1438:1992 Test methods for water resistance of exterior wall boards for building