Benjamin Obdyke Hydrogap Seam Sealing Tape, 2.5" X 75' Roll

Product Overview
Complete your high-performance building envelope and lock out structural drafts with the Benjamin Obdyke HydroGap Seam Sealing Tape (2.5 in. x 75 ft.). Sourced through Coastal Forest Products, this professional-grade weatherization tape is explicitly engineered to seal horizontal overlaps, vertical butt-joints, and perimeter seams on drainable weather resistive barriers. Featuring a specialized, high-tack acrylic adhesive core, it creates a permanent molecular bond over house wrap membranes, turning individual material sheets into a continuous, code-approved exterior air and water barrier system.

Advanced Vapor-Permeable Adhesion
Unlike standard construction tapes that trap moisture behind the seams and cause wood framing degradation, HydroGap Seam Tape features a unique vapor-permeable (breathable) matrix. It blocks wind-driven rain and air tracking from entering the wall assembly from the outside while allowing seasonal condensation inside the framing layers to safely escape outward. This breathable composition ensures that wall sheathing layers dry completely, preventing dangerous mold cultivation and structural wood rot behind your exterior siding.

Product Specifications

• Dimensions: 2.5 in. Width x 75 ft. Length Roll
• Material Type: Vapor-Permeable Polypropylene Matrix Backing Film
• Adhesive Base: High-Tack, Long-Lasting Moisture-Resistant Acrylic Adhesive
• Weather Class: Commercial and Residential Air/Water Barrier Seaming Component
• UV Exposure Rating: Certified to withstand direct sunlight exposure up to 120 days
• Application: Sealing House Wrap Joints, Window Flashing Transitions, Patching Sheathing Punctures, and Framing Cavity Remediation
• Brand Source: Coastal Forest Products-LBM / Benjamin Obdyke
• SKU: HGSEAL2
• UPC: 097888002547

Key Framing & Field Installation Notes

• Clean Substrate Requirement: For maximum high-tack performance, ensure all house wrap lap edges are completely free of sawdust, frost, standing water, and jobsite oil or mud before smoothing down the tape strip.
• Pressure Activation Step: To trigger the pressure-sensitive acrylic polymer cells and ensure an airtight bond over the wrap's 1mm raised dimple spacers, use a hand roller, plastic squeegee, or a clean rag to firmly press the tape flat across the center seam line.

Frequently Asked Questions

• Why should I use a specialized vapor-permeable tape instead of regular house wrap tape? Standard plastic house wrap tapes are completely vapor-impermeable blocks. When overlapping sheets are sealed with non-breathable tape, moisture frequently gets trapped at the double-layer seams, leading to localized rot in the structural OSB sheathing. A breathable acrylic tape allows moisture to pass straight through, maintaining continuous drying performance across the entire wall cavity layout.
• Can this tape be used on other brands of traditional building wrap? Yes, absolutely. While it is engineered for optimal performance over Benjamin Obdyke HydroGap or HydroGap SA rolls, the high-performance acrylic adhesive backing bonds tenaciously to standard Tyvek, poly-wrap, house sheathing films, and clean wood panels.
• What is the minimum application temperature for this acrylic seam tape? For optimal, immediate stickiness, apply the seam tape when outdoor temperatures are 25°F (-4°C) and rising. The acrylic formula handles cold weather installations far better than standard rubberized asphalt adhesives, which can lose stickiness and stiffen up in low winter climates.

Available for convenient yard pickup or flatbed jobsite trailer delivery from Rice Lumber Company in Shelburne, VT.