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WeatherBond HPWX #15 Steel Roofing Fasteners for TPO and PVC Membrane Systems
Regular price $525.48Orders start at $399 — combine any items to reach the minimum. Learn more
WeatherBond HPWX #15 Steel Roofing Fasteners for TPO and PVC Membrane Systems
WeatherBond HPWX Fasteners are #15 steel-threaded screws used with HPWX Fastening Plates to secure WeatherBond TPO and PVC roofing membranes to steel or plywood decks. Choose from 4, 5, 6, 7 or 8 inch lengths in boxed quantities. Each bucket includes a #3 Phillips screwdriver bit.
Key Features:
- Strong pull-out: #15 steel-threaded fasteners offer excellent driving and pull-out performance.
- Back-out resistance: 12 threads per inch increase thread engagement and provide additional back-out resistance.
- Mini drill point: The mini drill-point design cuts a hole in the steel deck, maintaining contact between the deck and the fastener's minor diameter for increased back-out resistance.
- Corrosion resistant: HPWX Fasteners offer outstanding resistance to back-out and corrosion.
- Bit included: One #3 Phillips screwdriver bit is included in each bucket.
- Deck versatility: Rated for use with 20- and 22-gauge steel decks or minimum 15/32 in. CDX plywood decks.
- Multiple lengths: Available in 4, 5, 6, 7 and 8 inch lengths to suit different deck and insulation build-ups.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | WeatherBond |
| Sell unit | 1 box (500 or 1000 fasteners depending on length) |
| Product line | HPWX Fasteners |
| Available sizes | 4 in. #15 (1000/box), 5 in. #15 (500/box), 6 in. #15 (500/box), 7 in. #15 (500/box), 8 in. #15 (500/box) |
| Material | Steel |
| Fastener type | #15 steel-threaded fastener |
| Thread count | 12 threads per inch |
| Drive type | #3 Phillips |
| Intended use | Securing WeatherBond TPO and WeatherBond PVC roofing systems with HPWX Fastening Plates |
| Compatible decks | 20- and 22-gauge steel decks; minimum 15/32 in. CDX plywood |
| Packaging | 1000/box (4 in.), 500/box (5-8 in.) |
| Included | One #3 Phillips screwdriver bit per bucket |
Fit and Compatibility:
Designed for use with WeatherBond TPO and PVC membrane systems together with HPWX Fastening Plates (2-3/8 in. diameter, 20-gauge steel plates with 12 barbs). Fastener length should match the total insulation thickness plus deck penetration.
Frequently Asked Questions (FAQ):
Q: What is included in a box?
A: Each box contains #15 HPWX fasteners in the selected length (4 in. in 1000-count boxes, 5-8 in. in 500-count boxes), and each bucket includes a #3 Phillips screwdriver bit.
Q: Which decks can these fasteners be used on?
A: They are rated for 20- and 22-gauge steel decks and minimum 15/32 in. CDX plywood decks.
Q: What length should I choose?
A: Select a length that passes through the insulation thickness and penetrates the deck adequately; the line runs from 4 to 8 inches.
Q: Do they resist backing out?
A: Yes, 12 threads per inch and the mini drill-point design increase thread engagement and back-out resistance.
Q: What driver do they require?
A: A #3 Phillips driver; one bit is included with each bucket.
Q: Do they resist corrosion?
A: The manufacturer states these steel fasteners offer outstanding resistance to back-out and corrosion.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Match fastener length to your insulation assembly: the screw must fully penetrate the insulation and engage the steel deck or plywood. On steel decks, the mini drill point self-taps, so maintain consistent screw gun torque and RPM for reliable seating. Pair with HPWX Fastening Plates for membrane attachment in uplift-prone zones, and use longer lengths (7-8 in.) for thicker polyiso build-ups.
Fastener ends are sharp; wear gloves and eye protection when handling, driving or cutting fasteners, and follow the membrane manufacturer's fastening pattern for your wind zone.
Order WeatherBond HPWX Fasteners in the length and box count your membrane attachment job requires.
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