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Internet # 323830711

Model # 2866858

Store SKU # 1009232510

Fireblock 12 oz. Spray Foam Sealant

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  • Specialty foam resists the spread of fire & smoke
  • Bright orange color
  • ASTM tested & UL certified
  • View More Details

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Product Details

About This Product

Loctite Fire Block Foam is a specially designed insulating foam to fill gaps and resist the migration of fire and hot gasses in Type V residential (wood frame) construction. This foam is orange in color and is easily identifiable on the jobsite. Best for use where any fire rated foam is needed such as electrical, plumbing and HVAC penetrations. UL Certified and ASTM tested.

Highlights

Product Information

Internet # 323830711

Model # 2866858

Store SKU # 1009232510

Specifications

Coverage Area (sq. ft.): 6 sq ft

Dimensions

Coverage Area (sq. ft.)

6 sq ft

Details

Compatible Install Surface

Cement, Concrete, Copper Pipes, Existing Drywall, Existing Insulation, Fiberglass, Metal, PVC/CPVC Pipes, Pex Pipes, Plywood, Tile Flooring, Wood

Cure Time (hours)

12

Dry to Touch (min.)

10 min

Insulation Features

Fire Block Rated, Fire Resistant, Moisture Retardant, Mold Resistant, Paintable, Water Resistant, Wind Breaker

Insulation R-Value

R4

Insulation R-Value per Inch

R4

Insulation Type

Spray Foam Insulation

Number of Pieces

1

Product Weight (lb.)

1 lb

Product Weight (oz.)

12 oz

Questions & Answers

Can this be used to seal around a natural gas line where the line passes through a foundation?
ByJul 26, 2026
1 Answer | 
Answer This Question

Thank you for your question. We recommend reviewing the Technical Data Sheet for the Loctite Fire Block Foam found at www.loctiteproducts.com and then consulting your local building code department, as well as your gas company, for proper guidance regarding firestops and natural gas lines.

By|Jul 30, 2026


    getting ready to replace an anode rod in my water heater. the spray foam insulation needs to be cut out to gain access to it. can this be used to refill the foam area that was removed to replace the rod ?
    ByJul 13, 2026
    1 Answer | 
    Answer This Question

    Thank you for your question. Loctite Fire Block Foam is not recommended to be used for the project described.

    By|Jul 13, 2026


      Can I use this around fire rated door
      ByMay 28, 2026
      1 Answer | 
      Answer This Question

      Thank you for your question. Loctite Fire Block Foam may be used for sealing around a door. Keep in mind that Loctite Fire Block Foam is not intended for use as a firestop product and should not be used in hourly fire-rated assemblies that require firestop products. If you need more information about our product, please visit www.loctiteproducts.com and review the product's Technical Data Sheet.

      By|May 29, 2026


        Can I use this around a steam pipe ?
        ByMay 13, 2026
        1 Answer | 
        Answer This Question

        Thank you for your question. Loctite Fire Block Foam would not be recommended for the application described and should not be used in contact with steam pipes, or on other areas which could be subjected to surface temperatures greater than 187°F.

        By|Aug 11, 2026


          Can this be used around the water heater vent pipe passing through ceiling
          ByMay 11, 2026
          1 Answer | 
          Answer This Question

          Thank you for your question. Loctite Fire Block Foam is not recommended to be used in applications where it will come in contact with heater vents, steam pipes, or other areas which could be subjected to surface temperatures greater than 187°F.

          By|May 12, 2026


            How many cans per case
            ByApr 10, 2026
            1 Answer | 
            Answer This Question

            Thank you for your question. We recommend contacting the retailer for confirmation.

            By|Apr 13, 2026


              can i use this on pellet stove pipes?
              ByFeb 10, 2026
              1 Answer | 
              Answer This Question

              Thank you for your question. Loctite Fire Block Foam is not recommended to be used for the project described.

              By|Feb 11, 2026


                Can I use this product to prevent a fire going through the subfloor and out of the home in a dryer duct vent application
                ByJan 30, 2026
                1 Answer | 
                Answer This Question

                Thank you for your question. Loctite Fire Block Foam is not a fire-rated product and should not be used as a fire-stopping material. For safety reasons, it is not recommended for applications where temperatures may exceed 187°F.

                By|Jan 30, 2026


                  Viewing 1-8 of 59

                  Customer Reviews

                  4.2 out of 5

                  • 4.2 out of 243 reviews
                  • 90% recommend this product
                  Filter by:
                  Showing 1-10 of 243 reviews
                  Low quality trigger!
                  Low quality trigger! I squeeze it and from the trigger and the little plastic tube made a mess.
                  by
                  Response from Loctite/Henkel CorporationDec 23, 2025
                  Thank you for sharing your feedback, and we are sorry to hear about your experience. If you ever need help using our product, feel free to reach us at 1-800-624-7767. LoctiteConsumerRelations
                    Splatters everywhere. I bought 6, returned 5 and bought another brand instead.
                    by
                    Response from Henkel CorporationApr 1, 2024
                    Thank you for sharing your feedback and we're sorry to hear about your experience. If you ever need help using our product, feel free to reach out to our technical team.
                    • Verified Purchase
                    3 found this review helpful
                    Garbage
                    This is terrible. Comes out too fast so you waste 80 percent of it. Hard to control. Don’t waste your money. 25 years in remodeling Use the great stuff with reusable tip.
                    by
                    Response from Henkel CorporationOct 26, 2023
                    Thank you for sharing your feedback and we're sorry to hear about your experience. If you ever need help using our product, feel free to reach out to our technical team.
                      4 found this review helpful
                      Works great
                      [This review was collected as part of a promotion.] I'm building my new home so as I'm building sometimes you find gaps that need to be filled and this works great. This is the same price as other ones sold in store and it's fire proof can't beat this deal. Definitely recommend this to anyone who needs to fill gaps in their home
                      by
                        • Recommended
                        It’s awesome!
                        [This review was collected as part of a promotion.] This stuff is great! You can use it to fill up any hole in your foundations or cracks. Keeps out bugs and creatures from getting in and it’s fireproof. It’s very durable after it dries. Just keep in mind that it really expands a lot so don’t overfill.
                        by
                          • Recommended
                          Spray foam with an added benefit.
                          [This review was collected as part of a promotion.] In my house, I had a problem area between the top of my integral garage wall and the bottom of the floor joists. I had a gap that allowed air to flow in between the garage and my basement. When I saw this Loctite Fire Block Foam I thought that it was the perfect product to finally seal off that gap. This product installed the same way as the regular spray foam and had the same consistency. I would caution that when working over head like I was you do have to be really careful placing the foam. Otherwise, this foam can drip down and make a mess that can be hard to clean up. The most important characteristic this product has is its fire resistance. I hope I never have to find out just how effective this product is!
                          by
                            • Recommended
                            This customer chose to rate the product and not provide text.
                            by
                            • Verified Purchase
                            This customer chose to rate the product and not provide text.
                            by
                            • Verified Purchase
                            this product what exactly is I expected? It was great. It’s set up fairly fast. It was easy to cut to trim. Pricing was very reasonable and they enabled me to somewhat fire right a cavity that I created. Would I ever rely on it in the sense that it’s a rated assembly no or do I think it mitigates probably prevents what’s likely to happen potentially yes so it’s definitely worth it for the right situation
                            by
                            Response from Loctite/Henkel CorporationAug 12, 2026
                            We are pleased to hear that you are satisfied with your experience using our product. LoctiteConsumerRelations
                            This customer chose to rate the product and not provide text.
                            by
                            • Verified Purchase
                            Showing 1-10 of 243 reviews