The Simpson 5/8 inch Plywood Sheathing Clip (PSCL) by Simpson Strong-Tie is a precision-engineered metal clip designed to brace unsupported sheathing edges where roof panels meet edge to edge without a rafter for support. By inserting this clip over the edges of adjacent plywood panels, contractors and builders can reduce deflection, keep panels flush, and maintain a level plane across the roof structure - ensuring a smooth, even surface for finished roofing materials. Built from 20-gauge steel with a zinc galvanized G90 finish, this roof sheathing clip delivers lasting performance in demanding construction environments.

Key Features

• Designed for unsupported sheathing edges - braces panel edges where no rafter is present, preventing sagging or movement between adjacent plywood sheets
• Built-in 1/8 inch expansion gap - provides the correct spacing to allow for natural shrinkage and expansion of roof sheathing, helping prevent panel buckling over time
• Sized for 5/8 inch panel thickness - fits 5/8 inch plywood precisely for a secure, snug installation without guesswork
• 20-gauge steel construction - delivers structural rigidity while keeping the clip lightweight and easy to handle during installation
• Zinc galvanized G90 coating - resists corrosion in outdoor roofing applications and is compatible with treated lumber environments
• Reduces panel deflection - keeps adjacent sheathing panels even and aligned, contributing to a flat, stable roof deck that supports subsequent roofing layers
• Made in the United States - domestic manufacturing to Simpson's established quality standards

Why This Product

• When roof sheathing meets edge to edge without rafter support, unsupported panel edges are vulnerable to deflection and misalignment - the PSCL clips solve this problem by bridging those edges and holding panels in a consistent, level plane.
• The built-in 1/8 inch gap is a code-recognized spacing requirement for plywood roof sheathing, and this clip delivers that gap automatically without measuring or shimming, saving time and reducing installation errors.
• The G90 zinc galvanized finish means this clip is built to survive outdoor exposure through the entire construction process and for the service life of the roof assembly - no concern about surface rust compromising the connection.
• Matching the clip size directly to the 5/8 inch panel thickness ensures a tight, stable fit - no wobble, no slippage - so panels stay even during and after installation.

Specifications

• Brand: Simpson Strong-Tie
• Member Size: 5/8 in.
• Gauge: 20
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Country of Origin: United States

Available Pack Options

• PSCL 5/8-R50: 50 Pk
• PSCL 5/8 (250): 250 Pk

Frequently Asked Questions

What is the purpose of the 1/8 inch gap in the PSCL sheathing clip?

The 1/8 inch gap built into the PSCL is specifically designed to address the natural shrinkage and expansion of roof sheathing panels. Wood products expand and contract with changes in moisture and temperature, and without this gap, panels can buckle or bow. The clip automatically provides that spacing when inserted over the edges of adjacent plywood sheets.

How do I know which size sheathing clip to use?

Match the sheathing clip size to the panel thickness. This PSCL clip is sized for 5/8 inch plywood sheathing panels. Using the correctly sized clip ensures a secure fit and proper performance at unsupported panel edges.

Where exactly is the PSCL installed on the roof?

The PSCL is inserted over the edges of adjacent plywood panels at locations where sheathing panels meet edge to edge without a rafter underneath for support. It is placed at the midspan between rafters to brace those unsupported edges, reduce deflection, and keep the panel surfaces even and level.

Is the PSCL clip suitable for outdoor and weather-exposed applications?

Yes. The PSCL features a zinc galvanized G90 coating, which provides corrosion resistance for outdoor roofing applications. This finish helps the clip withstand the moisture exposure typical of roof construction and long-term service in exterior environments.

Note: Product dimensions may differ from picture. Please see item description for specifications.