Standard Practice for Selecting Wood Substrates for Weathering Evaluations of Architectural Coatings

Importancia y uso:

5.1 Natural weathering tests can take several years and accelerated weathering evaluations often run for cycles requiring several weeks or months before obtaining useful data. Correlating wood panels selection with desired weathering performance characteristics assists a coatings experimenter in maximizing information in the desired time frame.

5.2 Because of the long time spans required for exposure testing, it is critical to plan a reliable experiment while controlling as many variables as possible. For this reason, selection of experimental panels made from representative wood species or composites, grades of lumber and surface types that are expected to be painted is very important.

5.3 This practice may be used for any types of exterior architectural coating intended for use on wood or wood composite substrate such as exterior house paints, primers, wood stains, or waterproofers.

Subcomité:

D01.42

Volúmen:

06.02

Número ICS:

79.060.01 (Wood-based panels in general), 87.040 (Paints and varnishes)

Palabras clave:

exposure; weathering; wood substrate;