Benjamin Obdyke’s HydroTape DS is an acrylic-based double-sided sealing tape for use with mechanically fastened housewrap. Opting to use a double-sided tape for housewrap seams helps eliminate many of the issues and failure points of conventional seam tapes. In standard applications, traditional seam tapes that adhere to the surface of housewrap or to sheathing with integrated weather barriers can create a reverse overlap; in these cases, if the tape wrinkles or lacks sealing pressure, it can impede water drainage and trap moisture. Additionally, many conventional tapes are vapor-closed, which means that trapped moisture will dry inward toward the sheathing rather than to the exterior. HydroTape DS 3/4-inch double-sided tape installs between the housewrap layers, adhering to the undersides of each layer where they overlap. The result is a tape that helps prevent blow-off during installation yet doesn’t interrupt moisture drainage or capture bulk water. The tape’s acrylic adhesive is vapor permeable, ensuring any trapped moisture dries to the exterior. The adhesive also seals around fasteners to reduce air infiltration at penetration points.
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