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GAF 2.75 in. Drill-Tec Barbed SXHD Seam Plates, 500-Box
Regular price $556.57GAF 2.75 in. Drill-Tec Barbed SXHD Seam Plates, 500-Box
This is a box of 500 GAF Drill-Tec 2.75 in. barbed SXHD (Super Extra Heavy-Duty) steel seam plates for mechanically fastening single-ply membranes and insulation in commercial roofing. The barbed design increases holding power under the membrane, and each box supplies 500 plates for use with matching GAF Drill-Tec fasteners.
Key Features:
- Super heavy duty: SXHD construction is GAF's Super Extra Heavy-Duty plate for demanding mechanical attachment.
- Barbed design: Barbed underside bites into insulation to boost pull-through resistance.
- Wide bearing: 2.75 in. diameter distributes load over insulation and membrane for secure fastening.
- Bulk box: 500 plates per box supports large mechanically attached roofing jobs.
- Steel build: Made of steel for strength under the fastener head.
- Code listed: FM Approved and Miami-Dade County Approved for commercial roofing use.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | GAF |
| Manufacturer model | 8679 |
| Sell unit | 1 box of 500 plates |
| Product line | Drill-Tec Fastening Products |
| Profile / style | Barbed seam plate, Super Extra Heavy-Duty (SXHD) |
| Dimensions | 2.75 in. diameter |
| Material | Steel |
| Pack quantity | 500 per box |
| Weight | 37 lb per box |
| Approvals | FM Approved; Miami-Dade County Approved |
| Intended use | Mechanical attachment of single-ply membranes and insulation in commercial low-slope roofing |
Coverage & How Much You Need:
Plate count depends on the fastening pattern; seam-fastened membranes typically use one row of plates per seam per the membrane manufacturer's spacing. A 500-plate box covers roughly 4,000 to 6,000 linear ft of seam at 9 to 12 in. plate spacing, subject to the specified wind uplift pattern.
Fit and Compatibility:
Designed for GAF Drill-Tec roofing fasteners (sold separately) and GAF single-ply membrane systems; use with the fastener size and pattern specified in the assembly's wind uplift design.
Frequently Asked Questions (FAQ):
Q: How many plates come in a box?
A: Each box contains 500 steel 2.75 in. barbed SXHD seam plates.
Q: Do these include screws?
A: No, plates are sold separately from fasteners; order GAF Drill-Tec fasteners in the length matching your insulation thickness and deck.
Q: What does barbed mean on a seam plate?
A: Barbs on the plate underside grip the insulation, increasing pull-through resistance compared to a smooth plate.
Q: What spacing should I use?
A: Follow the membrane manufacturer's attachment pattern and wind uplift calculation; common seam-attachment spacing is 9 to 12 in. on center.
Q: Are they approved for my roof system?
A: They are FM Approved and Miami-Dade County Approved; confirm the plate in your specific assembly's approved fastening schedule.
Q: What fasteners fit these plates?
A: They are used with standard roofing screws in the Drill-Tec line; verify shank fit with GAF's fastener documentation.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
SXHD plates are the choice where wind uplift calculations call for extra pull-through resistance or where insulation is softer and a standard plate could telegraph or pull through. Pair plate size and fastener length to the insulation plus deck embedment in your uplift design, and drive screws with a clutch-adjusted screw gun so the plate seats without over-compressing the membrane.
Wear eye protection and gloves when handling and driving fasteners and plates, and follow the manufacturer's instructions and uplift requirements.
Order GAF Drill-Tec 2.75 in. barbed SXHD seam plates for maximum holding power on mechanically attached roofs.
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