SKU: 41423504049

GAF Drill-Tec Polymer GypTec Fasteners, 2-1/2 in, Box of 500

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Description

GAF Drill-Tec Polymer GypTec Fasteners, 2-1/2 in, Box of 500GAF Polymer GypTec Roofing Fasteners, 2 1 2 in Glass filled nylon auger fasteners engineered to secure insulation and single ply membrane to gypsum and cementitious wood fiber decks. A 1 4 in internal square drive and wide buttress thread deliver fast installation and strong pull out resistance; designed to thread into the substrate without penetrating the deck. Key Features: Purpose Built for Gypsum CWF: Secures insulation and single ply membrane to

GAF Polymer GypTec Roofing Fasteners, 2-1/2 in

Glass-filled nylon auger fasteners engineered to secure insulation and single-ply membrane to gypsum and cementitious wood fiber decks. A 1/4 in internal square drive and wide buttress thread deliver fast installation and strong pull-out resistance; designed to thread into the substrate without penetrating the deck.


Key Features:

  • Purpose-Built for Gypsum/CWF: Secures insulation and single-ply membrane to gypsum and cementitious wood fiber decks
  • Fast, Easy Installation: Internal 1/4 in square drive (driver bit included) speeds application
  • High Holding Power: Wide buttress thread design enhances pull-out resistance
  • Plate Compatibility: Use with 3 in steel plates (insulation) and 2 in steel plates (membrane)
  • Durable Construction: Glass-filled nylon with 1 in head; tabs lock plate to fastener head

Specifications Table:

Specification Details
Manufacturer Part Number 456G
Product Number GAFGYPFST25
Length 2-1/2 in
Head Diameter 1 in
Drive Type Internal 1/4 in square (driver bit included)
Material Glass-filled nylon
Thread Type Wide buttress thread
Plate Compatibility 3 in steel plates (insulation); 2 in steel plates (membrane)
Intended Substrates Gypsum and cementitious wood fiber (Insulrock, Permadeck, Tectum, etc.)
Approvals FM Approved; Miami-Dade County Approved
Packaging Box of 500
Unit of Measure CTN
Style Category Nails, Screws & Fasteners

Frequently Asked Questions (FAQ):

Q: What materials can these fasteners be used with?
A: They are designed for gypsum and cementitious wood fiber decks (e.g., Insulrock, Permadeck, Tectum) for securing insulation and single-ply membranes.


Q: Do the fasteners penetrate the deck?
A: No. They are designed to thread into the substrate without penetrating the deck.


Q: What driver is required?
A: An internal 1/4 in square drive is used, and a driver bit is included.


Q: Which plates are compatible?
A: Use 3 in steel plates for insulation attachment and 2 in steel plates for membrane attachment.


Q: Are there approvals or ratings?
A: Yes, they are FM Approved and Miami-Dade County Approved.


Sleek Precision for High-Performance Roof Assemblies

This fastener brings an elegant efficiency to commercial roofing—purposeful, minimal, and engineered to perform. I love the bold buttress thread that feels sculptural while delivering uncompromising hold. Pair it with clean steel plates for a crisp, orderly fastening pattern that reads as considered craftsmanship. It’s a quiet essential that elevates the integrity and luxury of a well-detailed roof system.


Choose GAF Polymer GypTec Fasteners today for faster installs and reliable hold on gypsum and cementitious wood fiber decks.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 41423504049

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4.2 ★★★★★
Based on 17 reviews
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Mr. & Mrs. Us
Port Orchard, US
★★★★★ 5
Affordable, Clean and does the job.
Size: 36 sqft, Size: 36 sqft
I consumed about 90% of this box doing all doors and the tailgate on a 2000 tahoe. I applied it very liberally inside every door (exteror) panel. We then added an almost equal amount of deadening/absorbing/decoupling foam to the other side of the door (panel side). If you know how many rattles a circa 2000 tahoe GMT800 can have by now, you can appreciate why I added this as a "must" if i were to put some money back into this vehicle. Best sub $150 spent on this mini resto so far, right next to tint. Good quality. Not to thick or thin. Good sized sheets. Seamed to deaden as good as another slightly thicker material i recently used in my F250. My box was delivered with no issues of melting or anything funky. Clean, no major smell before or after and easy to work with. Maybe buy a roller set and wear gloves. Save your hands if your doing inside of panels. Good buy. Will buy more for future projects.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
T
Verified Purchase
Todd G. Teiken
San Leandro, US
★★★★★ 5
Great product
Size: 36 sqft
Easy to apply, made a big difference in sound deadening on side by side. Would definitely purchase again.
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Reviewed in the United States on June 1, 2026
B
Verified Purchase
B. Billy
Massapequa, US
★★★★★ 5
AS GOOD AS ANY OTHER, WORKS GREAT
Size: 36 sqft, Size: 36 sqft
Used this in my 17 RAM 1500. This stuff works great, just as good as S...ss brand that is also sold on here. Same thickness and same tackiness. And this stuff sticks like crazy, once its laid down and rolled onto the surface, it is hard to remove, so I am pretty sure it will stay where I installed it. It is great value, one box was enough to do the whole roof of the truck with a little left over for small spots. I think it took a total of 2.5 boxes to do my whole crew cab, roof, floor and back wall and most of the firewall, and I also added a layer of their .25" foam. I do notice a difference in less outside noise, from wind and road. I will be doing my wife car soon, and this is the product I will be using again, I recommend this.
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Reviewed in the United States on January 14, 2026
A
Verified Purchase
AF_TX
West Palm Beach, US
★★★★★ 5
Dyna... who?
Size: 36 sqft
This stuff works great. Fraction of the cost to Dyna.. and just as good. Very sticky. Used in doors, floors and ceiling. Great product and performs flawlessly. I would highly recommend this.
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Reviewed in the United States on March 13, 2026
J
Verified Purchase
Jacob C. Hall
West Palm Beach, US
★★★★★ 4
Awesome, inexpensive alternative to name-brands!
Size: 36 sqft
Awesome. Stuck well with alcohol prep and time to let liquid flash-off. Very consistent, piece to piece. Backing peeled easily when desired. Compared to Amazon Basics, the butyl seemed a little thicker (infinitesimally) and stickier, foil was less thick than Amazon Basics. Very good value. Started with my nice car, but after completing project, sound dampened all cars in the immediate family it made such a noticeable difference in sound level and quality of music from soeakers. Recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025

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