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OMG Roofing Products OMG Purlin Fasteners, Drill-Point Screws for Standing Seam Retrofit, 3.75 in. to 5.75 in.
Regular price $315.00Orders start at $399 — combine any items to reach the minimum. Learn more
OMG Roofing Products OMG Purlin Fasteners, Drill-Point Screws for Standing Seam Retrofit, 3.75 in. to 5.75 in.
OMG Purlin Fasteners attach single-ply membrane systems to structural steel purlins (12-18 gauge) in standing seam metal roof retrofit applications. Available in 3.75 in., 4.75 in. and 5.75 in. lengths, sold 500 per box in mill finish. The 3/4 in. drill point bores through up to 12-gauge steel before the threads engage.
Key Features:
- Retrofit securement: Designed for attaching single-ply membrane systems over standing seam metal roof retrofits.
- Fast drilling: Drills through up to 12-gauge steel in seconds.
- 3/4 in. drill point: The 3/4 in. drill point lets the fastener bore through the purlin before threads engage.
- Membrane-safe head: Low profile hex head has a smooth surface to help prevent damage to the membrane.
- Wide purlin range: Made for structural steel purlins from 12 to 18 gauge.
- Boxed 500: Each length is sold in a box of 500 fasteners.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | OMG Roofing Products |
| Sell unit | 1 box of 500 fasteners |
| Product line | Purlin Fasteners |
| Available colors | ['Mill'] |
| Available sizes | ['3.75 in., 500/box', '4.75 in., 500/box', '5.75 in., 500/box'] |
| Material | Steel (self-drilling fastener) |
| Finish / texture | Mill |
| Dimensions | 3.75 in., 4.75 in. or 5.75 in. lengths |
| Head type | Low profile hex head |
| Drill point | 3/4 in. drill point |
| Purlin compatibility | Structural steel purlins, 12-18 gauge |
| Intended use | Single-ply membrane attachment to purlins in standing seam metal roof retrofits |
Coverage & How Much You Need:
Each box of 500 fasteners supports the fastening density specified in the membrane system's uplift design. Choose length so the fastener penetrates the purlin a minimum of 1 in., including the standing seam and membrane assembly above it.
Fit and Compatibility:
For single-ply membrane systems in standing seam metal roof retrofit applications, driven into structural steel purlins. Membrane, plates and insulation are sold separately; use a screw gun limited to 1800 RPM.
Frequently Asked Questions (FAQ):
Q: What lengths are available?
A: 3.75 in., 4.75 in. and 5.75 in., each sold 500 per box.
Q: What purlins do they work in?
A: Structural steel purlins from 12 to 18 gauge in standing seam retrofit roofs.
Q: How deep must the fastener go?
A: It must penetrate the purlin a minimum of 1 in., ensuring at least 1/4 in. of thread penetration into the structural member.
Q: What tool should I use?
A: Drive with a screw gun set to a maximum of 1800 RPM until a slight depression appears around the plate.
Q: Will the head damage the membrane?
A: The low profile hex head has a smooth surface designed to prevent damage to the membrane.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Verify purlin gauge and total stack height before selecting length; the fastener must clear the standing seam and membrane yet not protrude excessively beyond the 1 in. minimum penetration. Keep the screw gun under 1800 RPM to protect the drill point, and drive to a slight plate depression rather than crushing the assembly. Match fastener spacing and density to the membrane system's approved uplift design.
Wear safety glasses when driving self-drilling fasteners, as chips and fastener kick-back are common hazards.
Order OMG Purlin Fasteners in 3.75 in., 4.75 in. or 5.75 in. for secure standing seam retrofit membrane attachment.
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