ISO 16938-1:2008 PDF Download

ISO 16938-1:2008 provides a standardized method to assess the potential staining effect of sealants on porous substrates commonly used in building construction. The primary objective of this standard is to evaluate the likelihood of a sealant causing early staining on porous materials like marble, limestone, sandstone, or granite.

The test method involves applying the sealant to the substrate and subjecting it to a compressive load to simulate practical conditions. This load promotes the exudation of materials from the sealant, which may result in stains on the substrate. The test evaluates the overall performance of the sealant-substrate combination, providing information specific to that particular combination rather than generalizing to other sealant formulations or porous substrates.