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Formerly: BASF Enershield HP

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MasterSeal AWB 660 is a one-component, fluid-applied vapor permeable air/water-resistive barrier based on Silica Fortified RubberTM chemistry. 


This waterproof, resilient coating may be spray-, roller-, brush-, or trowelapplied directly to approved above grade wall substrates. It provides excellent secondary moisture protection behind wall claddings including brick, siding, metal panels, EIFS and stucco. A slipsheet is required for stucco claddings. Do not use ENERSHIELD-HP for below-grade applications or on surfaces subject to water immersion.


For use over the following exterior wall substrates: Poured concrete/unit masonry, poured concrete/unit masonry treated with ENERSHIELD-FIL, ASTM C1177 type sheathings, including DensGlassTM exterior sheathing, eXPTM sheathing, GlasRoc® sheathing, SecurockTM glass-mat sheathing, Weather DefenseTM Platinum sheathing, GreenGlass® sheathing, PermaBaseTM cement-board by National Gypsum and other cement-boards (ASTM C1325 Type A Exterior), Untreated Exposure I or exterior plywood sheathing (grade C-D or better), Untreated Exposure I OSB, gypsum sheathing (ASTM C79/ASTM C1396).

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