How to Choose SFS Dekfast Fasteners
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When it comes to roofing systems, selecting the right fasteners is critical to long-term performance, safety, and compliance with building codes. SFS Dekfast Fasteners are trusted across the industry for their durability and compliance with standards like FM 4470 and Miami-Dade. But with various options available, how do you choose the right one for your project?
1. Understand Your Roofing Substrate
The first step in selecting a fastener is identifying what material you’re anchoring into. Is it steel, wood, or concrete?
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Steel decks often require self-drilling fasteners.
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Wood decks are better suited for sharp-point or self-tapping screws.
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Concrete decks may need pre-drilling and specific anchors.
Knowing this will narrow down your options.
2. Match with Compatible Plates
Fasteners and plates work hand-in-hand to secure insulation and membrane layers. For example, the #12 Dekfast fasteners pair well with 3” insulation plates, while #14 fasteners are ideal for thicker roofing assemblies. Always ensure the compatibility between fasteners and plates.
3. Check Approval Ratings
All SFS Dekfast fasteners are engineered for high performance, but it’s important to check:
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FM 4470 approval
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Miami-Dade certification
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State of Florida listing
These certifications ensure the fasteners meet wind uplift, corrosion resistance, and fire performance requirements.
4. Choose the Correct Length
Measure the total thickness of the roofing system (including insulation and membrane). Then, choose a fastener long enough to penetrate the deck substrate by at least:
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1 inch into wood
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3 full threads into steel
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Or as specified by your engineer or roofing manual.
5. Use the Right Driver and Tools
Using the proper driver bit ensures a secure installation and prevents fastener stripping. SFS provides recommended installation torque and RPM settings for each product line. Stick to those specs for best results.
6. Don’t Forget Corrosion Resistance
All SFS Dekfast fasteners come with premium corrosion protection coatings. If you're in a coastal or high-humidity region, opt for stainless steel variants for added durability.
Final Thoughts
Choosing the right SFS Dekfast Fasteners ensures your roofing system is secure, compliant, and built to last. Still unsure which fastener suits your project? Contact our experts or check out our product selection guide below.