Abstract: A coating composition for use as a water vapor permeable air barrier. The coating composition comprises an acrylic latex, 1-10% by weight of glycol ether, and 0.25-5% by weight of humectant. The coating composition, when measured at 77° F. (25° C.) using a Brookfield HB viscometer equipped with Spindle 3 at 2.5 RPM, has a viscosity ranging from 5000 to 500000 cPs. When coalesced, the coating composition forms a water vapor permeable air barrier having a water vapor permeance greater than 1 Perm at 35 mil film thickness when measured at 77° F. (25° C.) and 50% RH, according to ASTM E96/E96M-16, Method B.

Abstract: A blindside waterproofed building foundation system and method of forming the same are provided. The system includes a lagging wall, a monolithic waterproof layer adjacent to the lagging wall, and a foundation layer adjacent to the monolithic waterproof layer. The system and method provide a monolithic waterproofing layer that can remain adhered to a foundation surface even if the materials used to construct the lagging wall deteriorates, decomposes, or moves over time.

Abstract: A blindside waterproofed building foundation system and method of forming the same are provided. The system includes a lagging wall, a monolithic waterproof layer adjacent to the lagging wall, and a foundation layer adjacent to the monolithic waterproof layer. The system and method provide a monolithic waterproofing layer that can remain adhered to a foundation surface even if the materials used to construct the lagging wall deteriorates, decomposes, or moves over time.