1 1/8" OSB Rim Board is specifically engineered to bridge the gap between your floor joists, providing the strength, stability, and vertical load capacity your project demands.

Unlike standard lumber, this rim board is designed to resist bowing, shrinking, and twisting, ensuring a perfectly flat surface for your exterior siding and interior flooring.

Key Features

Precision Thickness: A true 1 1/8" profile provides a wide nailing surface for decking and wall plates.

High Load Capacity: Engineered to transfer heavy vertical loads from the walls above to the foundation below.

Structural Stability: High-density Oriented Strand Board (OSB) construction minimizes dimensional changes, reducing the risk of floor squeaks and drywall cracks.

Uniformity: Every piece is consistent in depth and quality, eliminating the "sorting" required with traditional solid-sawn lumber.

Sustainability: Made from fast-growing, renewable wood fibers for an eco-friendly footprint.

Technical Specifications

Best For:

I-Joist Systems: The perfect companion for wood I-joist floor systems.

Deck Attachment: Provides a solid, flat substrate for mounting ledger boards.

Energy Efficiency: Creates a tight thermal envelope with less air infiltration than traditional rim materials.

Pro Tip: For the best performance, ensure all joints are spaced according to the manufacturer’s guidelines (typically 1/8") to allow for natural expansion and contraction.