HOW VAPOR RESISTANCE PROPERTIES OF COATINGS AFFECT EXTERIOR WALL MOISTURE PERFORMANCE

摘要

Vapor resistance properties of architectural coatings that are used on or within an exterior wall can directly influence the moisture performance of the assembly. Through the use of computer modeling, the effect that various coating applications have on common exterior wall assemblies are studied using varying indoor and outdoor climatic conditions. Such analysis is useful in the selection of appropriate coatings for both new and retrofit construction, and also in diagnosing performance problems in existing construction.