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Sto ExtraSeal

Sto ExtraSeal


Sto ExtraSeal is a portland cement-based air and moisture barrier component for use over prepared concrete and concrete masonry (CMU) walls beneath StoPowerwall and other Sto listed ASTM C926 stucco brown coats. It provides substrate water penetration resistance and air leakage resistance.

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Product Bulletin

Product number: 81709

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