Published: Jan 1992
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In the 20th century masonry buildings evolved from massive support systems to thin facades attached to structural supports. Minor cracks in this thin facade allowed severe water ingression and damage, and brought about the development of elastomeric coating system for above grade waterproofing. Emulsion progression from butadiene-styrene and vinyl acetate polymer, through acrylics, and now into the silicone emulsion systems, has resulted in increasingly superior waterproofing elastomers. This paperreviews the basic chemistry relevant to silicone emulsion elastomers, their relationship to current acrylic elastomeric coatings for weathering, and physical property profiles. Also discussed are silicone emulsion elastomeric coatings resistance to mildew, dirt, graffiti and staining.
elastomeric, silicone, waterproof, coating, graffiti, staining
Science and Technology Department of the Dow Corning Corporation, Midland, MI