StoShield SA and Sto GoldSeal STPE by Sto Corp are air and water-resistive barrier (AWRB) solutions. StoShield SA is a self-adhered AWRB available in two configurations: StoShield SA VP is a vapor-permeable barrier that prevents air leakage and water intrusion while allowing moisture and water vapor to escape, while StoShield SA NP is a non-permeable version that prevents both air and vapor movement.
Sto GoldSeal STPE is a fluid-applied, vapor-permeable AWRB that’s formulated with solvent- and water-free moisture-cured chemistry; it adheres to many substrates, including glass mat gypsum, wood-based sheathing, concrete, and CMUs. Sto GoldSeal STPE skins in one hour, cures in under 12, and can be applied in temperatures as low as 20 degrees F. It’s low in VOCs, isocyanate-free, and tin-free with no respirator required.
