Metal to Metal

Why Choose Metal to Metal Roofing Screws?

Metal to metal roofing screws are designed for fastening metal roofing panels, siding panels, trim, flashing, and panel laps to compatible metal surfaces. They are commonly used where the screw needs to secure one metal component to another rather than fastening into wood.

This category includes several metal-to-metal roofing screw styles, including hex washer head screws, Metalgrip™ screws, Metalgrip™ stitch screws, ProZ™ screws, ProZ™ stitch screws, ProCap™ stitch screws, and color-matched options for visible roofing and siding applications.

Common Uses for Metal to Metal Roofing Screws

Metal to metal roofing screws are commonly used for metal roofing panels, siding panels, panel laps, side laps, trim, flashing, closures, light-gauge steel, and other sheet metal roofing components.

They are often selected when the installer needs to fasten overlapping metal panels or attach metal accessories to a compatible metal substrate. For fastening metal panels into wood framing, a metal-to-wood roofing screw is usually the better choice.

Metal to Metal vs Metal to Wood Roofing Screws

Metal to metal roofing screws are used when the fastener needs to secure metal roofing or siding components to another metal surface. Metal to wood roofing screws are used when fastening metal panels into wood purlins, framing, decking, or other wood substrates.

Choosing the correct screw type matters because the point style, thread design, sealing washer, and holding performance need to match the material being fastened into. If the screw is being installed into steel or another compatible metal substrate, use a metal-to-metal roofing screw style.

Choosing the Right Metal to Metal Roofing Screw Style

Hex washer head metal to metal roofing screws are commonly used when strong tool engagement and a washer-style bearing surface are needed. They can be installed with a nut driver or socket and are often used for panels, trim, and roofing-related sheet metal work.

Stitch screws are used for fastening overlapping metal panels together, such as side laps or trim details where the screw is joining metal to metal without fastening into wood framing below. Metalgrip™, ProZ™, and ProCap™ stitch options give installers different material, coating, and finish choices for these applications.

Sealing Washers and Exposed Roofing Fasteners

Many roofing screws use a bonded sealing washer to help seal around the fastener head when installed correctly. This is especially important on exposed roofing and siding applications where the fastener head may contact moisture.

Proper installation matters. The washer should be compressed enough to seal without being overdriven, crushed, or distorted. Overdriving can damage the washer, while underdriving may leave the seal too loose.

Color and Finish Options

Metal to metal roofing screws are available in unpainted and painted options to help match common roofing and siding panel colors. Color-matched fasteners can help the screw blend into visible roof panels, trim, flashing, and siding components.

Material and coating options may include mechanical galvanized steel, zinc-aluminum alloy, stainless steel, and other coated or painted finishes depending on the screw style. Choose the finish based on the panel material, exposure level, appearance needs, and job requirements.

How to Choose the Right Metal to Metal Roofing Screw

Choose the screw style based on the materials being fastened, the panel thickness, the type of connection, the required drill point, and whether the fastener will be exposed to weather. Metal-to-metal applications often need a screw point and thread style made for compatible sheet metal or light-gauge steel.

For panel laps and side laps, stitch screws are commonly used. For fastening through panels into a metal substrate, choose a metal-to-metal roofing screw with the correct drill point, length, washer style, and coating for the application.

Related Roofing Screw Categories

Browse related roofing screw categories to compare metal-to-metal options, metal-to-wood screws, stitch screws, washer styles, materials, coatings, and color-matched finishes.

• Roofing Screws
• Hex Washer Head Metal to Metal Roofing Screws
• Metalgrip™ Metal to Metal Roofing Screws
• Metalgrip™ Stitch Metal to Metal Roofing Screws
• ProZ™ Metal to Metal Roofing Screws
• ProZ™ Stitch Metal to Metal Roofing Screws
• ProCap™ Stitch Metal to Metal Roofing Screws
• Metal to Wood Roofing Screws

Metal to Metal Roofing Screw FAQs

What is a metal to metal roofing screw?

A metal to metal roofing screw is a fastener used to attach metal roofing panels, siding panels, panel laps, trim, flashing, and other metal roofing components to compatible metal surfaces.

What are metal to metal roofing screws used for?

They are used for metal roofing panels, siding panels, panel laps, side laps, trim, flashing, light-gauge steel, and other sheet metal roofing applications.

What is the difference between metal to metal and metal to wood roofing screws?

Metal to metal roofing screws fasten metal components to compatible metal surfaces. Metal to wood roofing screws fasten metal panels into wood purlins, framing, decking, or other wood substrates.

What are stitch screws used for in metal roofing?

Stitch screws are commonly used to fasten overlapping metal panels together, such as side laps, panel laps, trim, and other metal-to-metal connections.

Do metal to metal roofing screws need a sealing washer?

Many exposed roofing screw applications use a bonded sealing washer to help seal under the screw head. The right washer style depends on the panel, exposure level, and installation requirements.

Can metal to metal roofing screws be color matched?

Yes. Many metal to metal roofing screws are available in painted colors so the fastener can better match roofing panels, siding panels, trim, and flashing.

How do I choose the right metal to metal roofing screw?

Choose the screw based on the material being fastened, panel thickness, connection type, drill point, washer style, coating, color, and exposure level.