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Sika Sarnafastener #12 Steel Deck Insulation Fasteners, 5 in. to 8 in., Black or Gray, Box of 1000 or 500
Regular price $360.00Orders start at $399 — combine any items to reach the minimum. Learn more
Sika Sarnafastener #12 Steel Deck Insulation Fasteners, 5 in. to 8 in., Black or Gray, Box of 1000 or 500
Sika Sarnafastener is a threaded, drill-point fastener for attaching Sarnatherm insulation, Sarnatherm or gypsum roof boards and other Sika-approved boards into steel decking, wood plank or wood sheathing within Sarnafil roof systems. The line includes #12 fasteners in 5 in., 6 in., 7 in. and 8 in. lengths in black, sold 1000 per box, plus a gray 7 in. #14 version sold 500 per box. Choose the length to suit your board thickness and deck type.
Key Features:
- Drill point design: Threaded drill-point fastener installs directly into steel deck, wood plank or wood sheathing without pre-drilling.
- Heavy shank and thread: Heavy shank and thread diameters provide strength for commercial roof attachment.
- High pullout resistance: Deep buttress thread delivers high pullout resistance in the deck.
- Fast installation: Extra sharp spade point drives quickly in both new construction and reroof applications.
- Multiple lengths: Available in 5 in., 6 in., 7 in. and 8 in. lengths to match board build-ups.
- System matched: Designed for use within Sarnafil roof systems with Sika-approved boards.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Sika |
| Sell unit | 1 box (1000 or 500 fasteners per size) |
| Product line | Sarnafil roof systems |
| Available colors | Black; Gray (7 in. #14 only) |
| Available sizes | 5 in. #12, 6 in. #12, 7 in. #12, 8 in. #12, 7 in. #14 |
| Material | Steel |
| Fastener size | #12 (1000/box items) or #14 (7 in. gray item) |
| Lengths | 5 in., 6 in., 7 in., 8 in. |
| Deck compatibility | Steel decking 18 to 24 gauge; wood plank min. 1-1/2 in.; wood sheathing over 15/32 in. |
| Approved substrates | Sarnatherm insulation, Sarnatherm roof boards, gypsum roof boards, other Sika-approved boards |
| Point type | Drill point with spade point |
| Thread type | Deep buttress thread |
| Applications | New construction and reroof |
| Pack quantity | 1000 per box (#12 items); 500 per box (7 in. #14 item) |
Fit and Compatibility:
Made for use within Sika Sarnafil roof systems to attach Sarnatherm insulation, Sarnatherm roof boards, gypsum roof boards or other Sika-approved boards. Verify fastener length against total board thickness and deck type before ordering.
Frequently Asked Questions (FAQ):
Q: What is included in a box?
A: Each box contains threaded drill-point fasteners: 1000 pieces for the #12 sizes in black, or 500 pieces for the 7 in. gray #14.
Q: Which fastener length should I choose?
A: Select a length that penetrates the board build-up and reaches steel deck 18 to 24 gauge, wood plank at least 1-1/2 in. thick, or wood sheathing over 15/32 in. Longer 6 in., 7 in. and 8 in. options cover thicker insulation stacks.
Q: Can these be used in a reroof?
A: Yes. The extra sharp spade point is designed for quick installation in both new and reroof applications.
Q: What boards can I attach?
A: Sarnatherm insulation, Sarnatherm roof boards, gypsum roof boards or other Sika-approved boards within Sarnafil roof systems.
Q: Do the fasteners come in more than one color?
A: Yes. The #12 lengths in 5 in. to 8 in. come in black, and a 7 in. #14 version is offered in gray.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Match fastener length to the full stack of insulation and cover board plus deck penetration; the 5 in. to 8 in. range handles most commercial build-ups. The deep buttress thread is what drives pullout performance, so avoid substituting lighter general-purpose screws in steel deck. For very thick assemblies over steel deck, step up to the 7 in. or 8 in. #12 rather than over-driving a shorter fastener.
Drill-point fasteners have sharp points and edges; wear gloves and eye protection and keep fastener boxes clear of the membrane surface to avoid punctures.
Order Sika Sarnafastener steel insulation fasteners in the length and box size your Sarnafil system calls for.
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