NGP GapGuard Fire-Rated Caulk ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$520.00
NGP GapGuard Fire-Rated Caulk 10 oz. Cartridge for Fire Door Applications

NGP GapGuard Fire-Rated Caulk 10 oz. Cartridge for Fire Door Applications

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Model: GAP-GUARD-FIRE-CAULK

In Stock (leaves warehouse same day if ordered before 3pm ET)

$520.00
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NGP GapGuard Fire-Rated Caulk 10 oz. Cartridge for Fire Door Applications

UL Certified Fire Protection Sealant for Commercial Door Systems

NGP GapGuard Fire Caulk provides UL certified fire protection for hollow metal and wood fire-rated doors up to 90 minutes. This professional-grade sealant fills thru-holes up to 1/2" diameter on 60- and 90-minute fire doors, up to 1" diameter on 20- and 45-minute fire doors, and gaps up to 3/8" between floor and shimmed frame legs. Available in convenient 10 oz. cartridges with 12-month shelf life for reliable fire door compliance.

Professional Features & Benefits

  • Versatile Hole Filling Capacity: Seals up to 1/2" diameter thru-holes on 60- and 90-minute fire doors and up to 1" diameter on 20- and 45-minute fire doors for comprehensive protection.
  • Gap Sealing Performance: Fills gaps up to 3/8" between floor and shimmed frame legs with 90-minute fire rating for complete perimeter protection.
  • Multi-Door Compatibility: Certified for application on both hollow metal and wood fire-rated doors up to 90 minutes for versatile installation options.
  • Fast Cure Time: Fully cured in 24 hours allowing for quick project completion and immediate fire protection.
  • Paintable Finish: Can be sanded and painted after full cure for seamless integration with door and frame finishes.
  • UL Certified Compliance: Meets ANSI/UL10C, IBC, NFPA 80, NFPA 252, CAN/ULC-S104, and ANSI/UL10B standards for comprehensive fire code compliance.
  • Professional Packaging: Available in 10.0 oz cartridges (10 per box) and 3.0 oz tubes (6 per box) for various application sizes.
  • Extended Shelf Life: 12-month shelf life ensures product reliability and reduces waste in professional applications.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Fire Caulk
  • Subcategory: Parts and Accessories

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose NGP Quality?

NGP GapGuard Fire Caulk delivers professional-grade fire protection with UL certification to multiple standards including ANSI/UL10C, NFPA 80, and NFPA 252. Certified for use in both US and Canada with 12-month shelf life for reliable inventory management. Engineered for demanding commercial applications where code-compliant fire protection is essential.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Fire Caulk
Subcategory:
Parts and Accessories
Commercial/Residential:
Commercial
Product Category:
Door Trim and Accessories
Department:
Door Hardware

NGP GAP-GUARD-FIRE-CAULK – Frequently Asked Questions

1) What size holes can NGP GapGuard fire caulk fill on a 90-minute fire door?
On 60- and 90-minute rated doors, GapGuard fills thru-holes up to 1/2 inch in diameter. On 20- and 45-minute doors the limit goes up to 1 inch. That distinction matters when you are patching an old lock prep or a removed pull: a 1 inch hole left over on a 90-minute opening is beyond what the caulk is certified for, and the door needs a different repair.
2) Can I use fire caulk to seal the gap under a shimmed frame leg on a fire door?
That is one of the stated uses. GapGuard fills gaps up to 3/8 inch between the floor and a shimmed frame leg, with a 90-minute rating on that application. Wider than 3/8 inch and you are outside what the product is certified to do.
3) Does NGP GapGuard work on wood fire doors or only hollow metal?
Both. GapGuard is certified for hollow metal and wood fire-rated doors up to 90 minutes, so the same cartridge covers a mixed opening schedule where some leaves are HM and some are wood.
4) What fire standards is NGP GapGuard fire caulk certified to?
GapGuard is UL certified and meets ANSI/UL10C, ANSI/UL10B, NFPA 80, NFPA 252, IBC, and CAN/ULC-S104. The ULC listing means it is accepted in Canada as well as the US, which matters if you are standardizing a repair spec across both.
5) Can I patch a fire door with regular silicone or drywall caulk instead?
No. A fire door repair has to be made with a material certified for that assembly, and GapGuard is UL certified to ANSI/UL10C, NFPA 80 and NFPA 252 for thru-holes and frame gaps on rated doors. NFPA 80 is what your annual fire door inspection is run against, so an uncertified sealant in a hole is a deficiency the inspector writes up even though it looks filled.
6) How long does fire door caulk take to cure before I can paint it?
Full cure is 24 hours. After that GapGuard can be sanded and painted to match the door or frame finish, so a patched lock prep does not have to read as a patch.
7) Is NGP GapGuard fire caulk rated for doors over 90 minutes?
No. Certification tops out at 90 minutes on hollow metal and wood fire doors. For a 3-hour opening, this is not the repair material, and the hole or gap needs a solution rated for that assembly.
8) How long can I keep fire caulk on the shelf before using it?
GapGuard carries a 12-month shelf life. If you stock it for MRO use rather than a single job, buy to a year's turnover rather than filling a shelf, and date the boxes as they come in.
How fast can I get the NGP GAP-GUARD-FIRE-CAULK delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the NGP GAP-GUARD-FIRE-CAULK come with a warranty?
Absolutely. The NGP GAP-GUARD-FIRE-CAULK is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the NGP GAP-GUARD-FIRE-CAULK?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the NGP GAP-GUARD-FIRE-CAULK from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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