The Huber Zip System is a structural sheathing and WRB solution that requires proper taping and detailing to function as a high-performance air and moisture barrier. This article outlines best practices for field taping, transition detailing, and QA when using Zip panels.
Zip System Overview
- Integrated WRB panel with factory-applied weather-resistant coating
- Requires proprietary Zip System tape or liquid flash for seams and penetrations
- Functions as both air barrier and water-resistive barrier when correctly detailed
- Backed by Huber’s 30-year system warranty
Panel Installation Guidelines
- Install panels with 1/8-inch gaps at all edges for expansion
- Fasten per Huber structural spacing (typically 6 inches on edge, 12 inches field)
- Orient panels vertically or horizontally depending on framing and layout
- Ensure surface is dry and clean before taping
Taping and Transition Sealing
Use Zip System stretch tape or liquid flash for rough openings. Standard Zip tape should be rolled using a J-roller to ensure full bond. Extend tape at least 3 inches past inside corners. For bottom edges, apply kick-out tape detailing or extend WRB membrane under water table and flashing elements.
Field Testing and QA
- Perform water testing of window and door rough openings per ASTM E1105
- Check tape adhesion using manual peel tests
- Ensure complete roller application on all field seams
- Document all transitions, penetrations, and non-standard conditions with photos
Use a smoke pencil or blower door test to validate air barrier continuity at final inspection stage.
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