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Fire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk

Ratings & Reviews for 3M Fire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk

4.5
232
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Review
  4.5 out of 5
232 Reviews


91% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The product is a fire-resistant sealant that is effective and easy to use for sealing gaps and cracks around high-temperature applications. It is described as durable, able to withstand high temperatures, and meeting local building requirements for fire safety. While a few customers experienced minor issues, the majority were very satisfied with the product's performance and value.

Customer review summary generated by AI, including incentivized reviews.
232 Customer Reviews

Fire Block

 Would Recommend

Worked great. Goes quick

September 2, 2025
Verified Purchaser
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easy to apply, smooths nicely

 Would Recommend
August 11, 2025
Verified Purchaser
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Works well

 Would Recommend

Same consistency as normal caulk. Hardens and stays in place like it should

June 5, 2025
Verified Purchaser
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I recommend another product

 Would Not Recommend

Well it went on good but after the fireplace has worked a couple times it just start blistering and popping off

February 7, 2025
Verified Purchaser
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Response from 3M Social Care

Hello, thank you for taking the time to leave your review. Your safety is our top concern and we would appreciate the opportunity to discuss this wit... Read More

3M Social CareFebruary 7, 2025

3m-country-catalog

Nothing

 Would Recommend

nothing

January 24, 2025
Verified Purchaser
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Hope it works

 Would Recommend

It says it can be used to seal the joints on wood stove pipe. Hope so.

November 23, 2024
Verified Purchaser
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?

It worked great

November 10, 2024
Verified Purchaser
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Good consistancy

 Would Recommend

Sealed up openings around pipes in furnace room. Good consistancy and cure time.

November 9, 2024
Verified Purchaser
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Horrible Delivery Service...

 Would Not Recommend

I ordered this item to be delivered to my home address, but it was delivered to a completely different address. I have called numerous times in an attempt to resolve this dilemma, but I continuously encounter cutoffs resulting in more calling and research to find a customer service representative to help me. I will NEVER use Lowe's delivery service for anything in the future, as it is unreliable!!!

November 5, 2024
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Response from 3M Social Care

We hope the seller was able to resolve this but if not please connect with us directly at 1-800-494-3552 M-F 8am-4:30pm CT. Thank you!

3M Social CareNovember 6, 2024

3m-country-catalog

Worksgood on my chimney

 Would Recommend

A little pricey

October 13, 2024
Verified Purchaser
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