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Penetrating Sealer (1 Gallon)

Part Number SF521
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Penetrating Sealer (1 Gallon)
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Used as a low-sheen sealer for American Clay Earth Plasters or as a preseal for our Gloss Sealer, Penetrating Sealer is a low-VOC product that increases the durability and water-resistance of the final plaster. A single coat imparts a low sheen, while two to three coats produce a hard, semi-gloss finish that makes the surface easier to clean and more water-resistant. You can use it on surfaces subject with occasional moisture, such as walls behind sinks and around bathtubs, but not on walls in constant contact with moisture. A slight change in color may occur with Penetrating Sealer. We recommend testing a small area on your wall to see the color change.


First coat 150 to 200 square feet per gallon, depending on the surface texture and porosity. Subsequent coats 250 to 350 square feet per gallon.

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