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This paper outlines a construction procedure used to insure a watertight masonry wall and a sealed connection, of this same wall, to the foundation. This procedure was discovered as the byproduct of using an insulated dual cavity concrete masonry unit that is foamed in the field. This insulated concrete masonry system has been developed in the past 12 years by our company, and has been utilized in almost 100 buildings (in Arizona, California, Nevada, Oregon, and Utah) with climates that range from hot desert to Sierra Nevada snow country to the Pacific Northwest rainfall.
The critical elements in perfecting this procedure are the detailing of the base of the wall, with a continuous exterior first course foam side cleanout, then following this detailing in the field construction of the wall, and properly foaming the constructed wall with polyurethane foam. The polyurethane foam must be poured into the foam cavity after the face shells have been replaced at the first course cleanout.
watertight masonry wall, face shells, dual cavity concrete masonry unit, insulated concrete masonry system, first course foam side cleanout, sealed connection, polyurethane foam, slab edge insulation, structural element of the dual cavity concrete masonry unit, insulating element of the dual cavity concrete masonry unit, wall connection to the foundation, moisture penetration
President, Graystone Block Company, Inc., Modesto, California