The Simpson 3/4 inch Plywood Sheathing Clip (PSCL) is a precision-formed roof panel clip engineered to brace unsupported sheathing edges where plywood panels meet edge to edge without a rafter beneath for support. Designed by Simpson for use in roof sheathing assemblies, this clip inserts over the edges of adjacent plywood panels to reduce deflection, keep panels flush, and maintain a consistent level plane across the structure. A built-in 1/8-inch gap accommodates natural wood movement, allowing the sheathing to expand and contract with seasonal moisture changes without buckling or distortion - making it an essential component for durable, long-performing roof decks.

Key Features

• Designed for 3/4 inch panel thickness - matches directly to standard 3/4 inch plywood sheathing for a secure, consistent fit across the roof deck
• Braces unsupported sheathing edges - eliminates the need for a rafter at every panel edge, enabling efficient, code-conscious sheathing layouts
• Built-in 1/8-inch expansion gap - allows roof sheathing panels to expand and contract with humidity and temperature changes, reducing the risk of panel buckling or surface distortion
• Reduces panel deflection - keeps adjacent plywood edges even and aligned, resulting in a flatter, more uniform roof surface for roofing materials
• 20-gauge steel construction - a lightweight yet rigid clip that is easy to handle and install without added structural bulk
• Zinc galvanized G90 coating - provides corrosion resistance suited to outdoor roofing environments and extended service life in exposed construction applications
• Made in the United States - manufactured domestically for consistent quality and material traceability

Why This Product

• Solves the unsupported edge problem without extra framing - where sheathing panels meet without a rafter below, this clip provides the lateral support needed to prevent edge deflection, saving material and labor compared to adding blocking or additional rafters
• Protects the roof deck from wood movement damage - the engineered 1/8-inch gap built into the clip directly addresses the real-world expansion and contraction of plywood sheathing, helping prevent long-term warping or buckling at panel joints
• Keeps the roof surface level and installer-ready - by maintaining a flat, even plane across adjacent panels, this clip creates a better substrate for shingles, underlayment, or other roofing materials, reducing callbacks and rework
• Lightweight 20-gauge form factor speeds installation - the slim clip profile inserts quickly over panel edges and does not interfere with roofing layout, allowing crews to work efficiently across large roof areas

Specifications

• Brand: Simpson Strong-Tie
• Short Product Name: 3/4IN Plywood Sheathing Clip
• Member Size (Panel Thickness): 3/4 in.
• Gauge: 20
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Country of Origin: United States

Available Pack Options

• PSCL 3/4-R50: 50 Pk
• PSCL 3/4 (250): 250 Pk

Frequently Asked Questions

What size plywood sheathing is this clip designed for?

This clip is sized for 3/4 inch panel thickness. When selecting a plywood sheathing clip, always match the clip size to the thickness of the sheathing panels being used to ensure a proper, secure fit over the panel edges.

Why does the clip have a 1/8-inch gap?

The 1/8-inch gap built into the PSCL clip is specifically designed to address the natural shrinkage and expansion of roof sheathing. Wood panels shift dimensionally with changes in moisture and temperature, and this intentional gap prevents adjacent panels from pushing against each other and buckling over time.

When is a plywood sheathing clip required?

The PSCL is designed to brace unsupported sheathing edges when sheathing meets edge to edge without a rafter for support. In roof framing layouts where panel edges fall between rafters - rather than directly over them - these clips provide the lateral support needed to reduce deflection and keep the panels in a level plane. Always refer to the sheathing manufacturer's installation instructions, as maximum spans may be reduced for low slopes or high uniform loads.

What is the coating on this sheathing clip, and why does it matter?

The clip carries a Zinc Galvanized G90 coating. This galvanized finish provides a layer of corrosion protection suited to outdoor roofing environments, helping the clip maintain its structural integrity and appearance over the service life of the roof assembly.

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