#14 Metal Roofing Screws with EPDM Washer

Get professional-grade metal roofing screws designed for sheet metal roof and siding installation. Our #14 metal roofing screws feature a 5/16 inch hex head, approximately 9/16 inch EPDM washer, and a sharp T17 self-starting point that drives cleanly into wood without pre-drilling. The galvanized zinc coating has passed the 1,000-hour salt spray test, ensuring long-term corrosion resistance even in coastal or high-humidity environments. Each screw head is painted with two-part polyurethane to closely match popular metal roofing brands. Available in a full range of colors. Use these screws on pole barns, sheds, airplane hangars, lean-tos, and residential metal roofing projects. Sold in 250-count packs.

Frequently Asked Questions

What size are #14 metal roofing screws?

#14 metal roofing screws have a shaft diameter of .242 inch, a 5/16 inch hex head, and an approximately 9/16 inch EPDM washer. They are larger than #10 or #12 screws and are ideal for thicker metal-to-wood fastening.

Can I use metal roofing screws with an impact driver?

We recommend against using an impact driver. Use a screw gun with torque control to avoid over-driving and compressing the EPDM washer, which can cause leaks.

What is the difference between EPDM and neoprene washers?

EPDM washers handle temperatures from -60F to 350F and resist UV and ozone far better than neoprene. All JakeSales metal roofing screws use EPDM washers bonded to a galvanized steel backing washer.

How many metal roofing screws do I need per square?

A standard roofing square (100 sq ft) typically requires 80 to 100 metal roofing screws. For a 10x10 section, budget approximately 80 screws, with extra for eaves and ridges.

What colors are available for metal roofing screws?

We carry a wide range of color-matched painted heads to match popular metal roofing panel brands. See the color chart on the product listing to find your roofing panel color.

Do metal roofing screws need to be installed at a specific torque?

Yes. Over-driving compresses the EPDM washer and can cause leaks; under-driving leaves the washer unseated. A depth-sensing screw gun or torque-limiting driver set to the correct depth is the right tool for installation.

Are these screws compatible with corrugated metal roofing?

Yes. #14 metal roofing screws are designed for corrugated, ribbed, and standing seam metal roofing panels attached to wood purlins or rafters.

What is the thread type on metal roofing screws?

Metal roofing screws use a coarse thread designed to grip wood framing. The thread is not self-tapping into metal - the sharp T17 tip pierces the thin metal panel and then the thread bites into the wood beneath.

How do I know if my metal roofing screws are failing?

Signs of failing screws include panel lifting at fastener points, visible rust streaking from screw heads, water intrusion at penetrations, and screws backing out of the panel.

Can I use #14 metal roofing screws on a metal-to-metal connection?

No. #14 metal roofing screws are designed for metal panel-to-wood connections. For metal-to-metal fastening, use self-drilling Tek screws with a drill-point tip rated for the steel gauge.