3M (1-Pack) Fire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk

Name: 3M (1-Pack) Fire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk
Brand: 3M
SKU: GR_32362
Price: 8.48 USD
Rating: 4.5 (232 reviews)

Online Set #GR_32362

232

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

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

Review

4.5 out of 5

232 Reviews

91% Recommend this product

Ratings may include incentivized customer reviews.

+ 1

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

Sort By

Easy application

Would Recommend

I bought this about a month ago to seal some hairline cracks in my wood burning fire place. It went on easy, just like caulking. I haven't had a fire yet to test its durability.

September 21, 2026
Verified Purchaser

Was this Review Helpful ?

Great product, easy to use.

Would Recommend

Does exactly what it is intended for. Very important to seal your pipe joints so no smoke is present. No real smell and cleaned up easy. Dries pretty quick

JimdeezyFebruary 7, 2026
Verified Purchaser

Was this Review Helpful ?

Great caulk

Would Recommend

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

ChuckJrJune 3, 2026
Verified Purchaser

Was this Review Helpful ?

It works

Would Recommend

Once you get the hang of it, it works great l. But if you're dealing with old, crumbling mortar between bricks in fireplace, it's a different technique than regular caulking.

EMMADecember 26, 2025
Verified Purchaser

Was this Review Helpful ?

Response from 3M Social Care

Hello, thank you for taking the time to leave your review. Your feedback is very important to us, and we will be sure to forward your comments. If yo... Read More

3M Social CareDecember 26, 2025

3m-country-catalog

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!!!

Boru1953November 5, 2024

Was this Review Helpful ?

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

It seals very well

Would Recommend

The product worked really well for what i used it for

Wes1963April 16, 2026
Verified Purchaser

Was this Review Helpful ?

Stone/paving adhesive

Would Recommend

Strong bond to build a firepit

JamesJJune 21, 2026
Verified Purchaser

Was this Review Helpful ?

Product is of good value

Would Recommend

Product did a very good job of what's it's supposed to do. Seal things.

RickFebruary 25, 2026
Verified Purchaser

Was this Review Helpful ?

Need to put it on very quickly after install. It w

Would Recommend

Tube is very easy to open and sealant is very easy to clean up after putting on the vent.

JHERSHOctober 24, 2025
Verified Purchaser

Was this Review Helpful ?

It seals great. the Gas inspector was pleased.

Would Recommend

A little hard to use in a hand gun, but it worked fine,.

polishpiclDecember 30, 2025
Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item 3MFire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk
		Ratings	232
		Type	Latex
		Package Quantity	1
		Waterproof
3MFire Barrier Sealant CP 25WB+ 10.1-oz Exterior and Specialty Red Paintable Latex Caulk	GEAdvanced Metal Silicone 10.1-oz Exterior and Specialty Metallic Gray Silicone Caulk	SikaNP1 10.1-oz Exterior and Specialty Black Paintable Advanced sealant Caulk	Gardner BenderFire-Gard Red Caulk	LOCTITEPL Roof Flashing 10-oz Exterior and Specialty Black Paintable Polyurethane Caulk	GEAll Purpose Silicone 10.1-oz Window and Door Clear Silicone Caulk	DAPConcrete 10.1-oz Exterior and Specialty Gray Paintable Latex Caulk	DAPDynaflex Ultra 10.1-oz Window and Door Black Paintable Latex Caulk	MAPEIMapesil T Plus 10.1-oz Tile and Grout Warm Gray #5093 Silicone Caulk
143	261	323	1	426	4609	724	3002	1346
Latex	Silicone	Advanced Sealant	Firestop caulk/sealant	Polyurethane	Silicone	Latex	Latex	Silicone
1	1	1	1	1	1	1	1	1

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3M (1-Pack) Fire Block Sealant FB 136 10.1-oz Gray Paintable Latex Caulk

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