R3 Zip Foam OSB Board - 4' X 8' X 7/16"

Zip System® R-Sheathing | 4' x 8' | R-3 Insulated OSB

The All-in-One Solution for Structural Durability and Thermal Performance.

Upgrade your building envelope with the Zip System® R-Sheathing. This 4' x 8' panel eliminates the need for housewrap while providing a built-in thermal break. By combining structural OSB with a layer of rigid foam insulation, you can meet energy codes faster and more efficiently.

Why Choose Zip R-Sheathing?

Integrated Water & Air Barrier: The built-in overlay eliminates the need for traditional housewrap. Simply install the panels and tape the seams with ZIP System™ tape for a continuous, airtight seal.

Built-in Thermal Break: The R-3 foam layer reduces thermal bridging through the studs, keeping interiors warmer in winter and cooler in summer.

Structural Strength: Provides the same shear strength and structural racking resistance as standard OSB, making it a 2-in-1 replacement for sheathing and rigid foam.

Enhanced Productivity: One panel does the work of three separate layers (sheathing, housewrap, and rigid foam), significantly reducing labor costs and installation time.

Moisture Management: Designed to allow the panels to breathe while keeping bulk water out, preventing rot and mold within the wall cavity.

Ideal Applications

Residential new construction

Energy-efficient retrofits

Additions and outbuildings

Projects requiring compliance with updated energy codes (IECC)

Note: For a fully warranted system, ensure all seams are sealed using ZIP System™ Seam Tape and all fasteners are driven to the manufacturer's specified depth.