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3M Fire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk

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4.5

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10.1 OZ, Fire Block Barrier IC 15WB+ Residential Caulk, For Non Rated Construction, Meets Most Fire Blocking Codes In Residential and Combustible Construction.

3M is introducing 3M Fire Block Sealant FB 136
A one component, non-combustible draft, smoke and fireblocking sealant
Water-based
Designed to resist high temperatures and smoke passage in non-rated construction
Caulk Gun required for application.

General
Color/Finish Family	Gray	Product Set Time	1-4 hours
Manufacturer Color/Finish	Gray	Paintable	Yes
Series Name	Fire Block Sealant FB 136	Container Type	Cartridge
Type	Latex	Clean-up Method	Soap and water
Package Quantity	1	Fire Rated	No
Use Location	Interior	Caulk Gun Needed	Yes
Unit of Measure Quantity	10.1	Heat Resistance in Degrees F	600+
Unit of Measure	Fluid ounce(s)

Dimensions
Container Size	10.1-oz

Features
Dry to Touch	60 minutes	Sandable	No
Fire Resistant	Yes	Self Leveling	No
Mildew Resistant	No	Stain Resistant	No
Mold Resistant	No	Waterproof	No

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	ASTM Certified	Yes

Warranty
Warranty	90-day limited

Compatibility
For Use in Bathrooms	Yes	For Use on Vinyl	Yes
For Use in Kitchens	Yes	For Use on Masonry	Yes
For Use on Plastic	Yes	For Use on Doors	No
For Use on Stone	No	For Use on Tile	Yes
For Use on Metal	No	For Use on Siding	No
For Use on Wood	Yes	For Use on Windows	No
For Use on Concrete	Yes	For Use on Gutters	No
For Use on Drywall	Yes	For Use on Roofing	No
For Use on Glass	No	For Use on Trim/Moulding	No
For Use on Fiberglass	Yes	For Use on Marine	No

Miscellaneous
UNSPSC	31201600

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Review

4.5 out of 5

223 Reviews

91% Recommend this product

Ratings may include incentivized customer reviews.

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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.

223 Customer Reviews

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Great caulk

Would Recommend

It spreads well and gives you plenty of time to work with it.

ChuckJrJune 3, 2026
Verified Purchaser

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Works

Would Recommend

It worked

ParkerMay 22, 2026
Verified Purchaser

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Works as advertised

Would Recommend

Worked great on our fireplace

SammyMay 20, 2026
Verified Purchaser

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Crumbles

Would Not Recommend

Chipped away after 1 day.

AajayMay 15, 2026
Verified Purchaser

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Response from 3M Social Care

Thank you for taking the time to leave your review, Aajay. We are sorry to hear the sealant chipped away so quickly and would like to learn more abou...

3M Social CareMay 15, 2026

3m-country-catalog

It seals very well

Would Recommend

The product worked really well for what i used it for

Wes1963April 16, 2026
Verified Purchaser

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3M Fire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk

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