GAF Drill-Tec #14 Heavy Duty Roofing Fasteners, 1-1/4 in. or 2 in., Black, Box of 1,000

GAF Drill-Tec Heavy Duty Roofing Fasteners are self-drilling #14 screws for attaching insulation and roof components through steel decks in low-slope roofing assemblies. The line is offered in 1-1/4 in. and 2 in. lengths, both in black, and each box contains 1,000 fasteners. Choose the length by total insulation and attachment thickness over the steel deck.

Key Features:

• Self-drilling point: Self-drilling threads bore through steel deck without pre-drilling.
• Heavy duty shank: #14 diameter fastener for heavy-duty roofing attachment loads.
• Two lengths: Offered in 1-1/4 in. and 2 in. lengths to match assembly build-up.
• Bulk box: 1,000 fasteners per box support full-day production rates.
• Black finish: Black color suits common dark roofing assemblies.

Specifications Table:

Coverage & How Much You Need:

Fastener spacing follows the roofing system’s uplift and attachment requirements, typically calculated per board or per square foot. A 1,000-count box sizes large areas; divide total required fasteners by 1,000 to determine boxes needed.

Fit and Compatibility:

Part of the GAF Drill-Tec fastener line for use with GAF low-slope roofing and insulation assemblies. Matching fastener plates and the correct screw length for the deck type are selected per the system specification; plates are sold separately.

Frequently Asked Questions (FAQ):

Q: What lengths are available?
A: This line includes 1-1/4 in. and 2 in. #14 heavy duty roofing fasteners.

Q: How many fasteners come in a box?
A: Both lengths are packaged 1,000 fasteners per box.

Q: Do these need pre-drilling?
A: No. They are self-drilling screws designed to bore through steel decking as they are driven.

Q: What length should I choose?
A: Select the length based on the total thickness of the materials being fastened plus adequate penetration into the steel deck, per the roofing system specification.

Q: What color are they?
A: Black.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Pick the fastener length so it reaches and engages the steel deck without bottoming out; the 1-1/4 in. length suits thinner single-layer boards and the 2 in. length covers thicker or multi-layer insulation build-ups. Drive with a depth-setting screw gun so heads seat flush without stripping. Always match fastener and plate to the roofing system’s tested assembly rather than substituting.

Self-drilling screws can shatter under excessive torque; wear eye protection and follow safe roof access and fall-protection requirements during installation.

Order GAF Drill-Tec Heavy Duty Roofing Fasteners in 1-1/4 in. or 2 in. lengths for your next low-slope attachment job.