• 3M COMPANY FB 136 10.1OZ Fire Block Caulk
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3M COMPANY FB 136 10.1OZ Fire Block Caulk

$18.57
$7.98
57% off

Reviewers mentioned

See 277 reviews
Easy to use
Seals well
Dries quickly
Good weather resistance
Fills gaps well
Lacks durability
Height
11.2 in
Depth
2 in
Width
2 in
Length
2 in
3M COMPANY FB 136 10.1OZ Fire Block Caulk

Reviewers mentioned

See 277 reviews
Easy to use
Seals well
Dries quickly
Good weather resistance
Fills gaps well
Lacks durability

3M COMPANY FB 136 10.1OZ Fire Block Caulk

$18.57
$7.98
57% off
Found at 11 stores ·Prices updated 13 hours ago 
Store
Amazon
3M Fire Block Sealant FB 136, Gray Color, Single Component, High Temperature and Smoke Passage Resistant, 10.1 fl oz Cartridge
$7.98 
as of 13:32 01/13
Lowe's
$7.98 
Zoro
$9.19 
Family Hardware
$9.79 
Grainger
$9.98 
Page 1 of 3
Height
11.2 in
Depth
2 in
Width
2 in
Length
2 in

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Easy to use
87% positive
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Seals well
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Dries quickly
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Good weather resistance
91% positive
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Fills gaps well
86% positive
6 reviews
Lacks durability
60% negative
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Reviews

Hope it works

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

OldHippy · Review provided by Lowe's
November 23, 2024

?

It worked great

Mike · Review provided by Lowe's
November 10, 2024

Good consistancy

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

Glenn · Review provided by Lowe's
November 09, 2024

Horrible Delivery Service...

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!!!

Boru1953 · Review provided by Lowe's
November 05, 2024

Adds flavor to any dish. I recommend it.

Laughing K mala · Review provided by Home Depot
October 30, 2024

Worksgood on my chimney

A little pricey

Knight owl · Review provided by Lowe's
October 13, 2024

In addressing a small series of penetrations', this tubed firestop materials allowed us to facilitate a quick repair and assure we meet the applicable code. I would highly recommend this product for related uses.

MARK · Review provided by Home Depot
October 02, 2024

Not to messy. Did the job and match the coloring of the surrounding ceiling.

HomeDepotCustomer · Review provided by Home Depot
September 11, 2024

Blocks fire

Good product

Castle paint · Review provided by Lowe's
August 17, 2024

I was shocked to find out when this arrived that it is for interior use only. Specifically states that this is water based so hardened product will liquify if it gets wet. Since most ares needing fire protection always has a possibility of getting wet, this product can not be reliable.

MD · Review provided by Home Depot
July 31, 2024

Easy to use and the color blended well with the color siding i was using it on.

HomeDepotCustomer · Review provided by Home Depot
May 08, 2024

I will buy this again.

Great product at an excellent price. Arrived next day!

Guest · Review provided by Zoro
April 10, 2024

Unfortunately the only rating I can give is poor because I picked it up in the evening and went to use it the next day but it was hard as a rock.

HomeDepotCustomer · Review provided by Home Depot
February 29, 2024

I recently learned that there are several versions of this. Something called "Fire Barrier", Fire Lock" and "Fire Block". It's all related to "time". One is good for 3 hours another for 3 days and another is permanent. Choose wisely.

Phil · Review provided by Home Depot
February 21, 2024

can not rate

haven/t used it yet

penny · Review provided by Lowe's
February 08, 2024

Sealer

Did what was needed

Gonzo · Review provided by Lowe's
January 05, 2024

I needed a filler to replace cracked seam where my fireplace box meets the hearth. Of course, fire resistance was a must. The sealant worked great. I'll have to see how it wears over time.

Bud · Review provided by Home Depot
December 28, 2023

Easy to install

Easy to install. Will crack under direct heat for long periods of time.

Rachel · Review provided by Lowe's
December 28, 2023

Quick dry. Easy to use. Met expectations.

HomeDepotCustomer · Review provided by Home Depot
December 22, 2023

Product is easy to use.

TomVH · Review provided by Home Depot
December 09, 2023
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Customer pictures

Overview

We found this at 11 stores including Walmart, Lowe's, and ZoroThis product sells from $7.98 up to $18.57. Users can save 57% by shopping at Amazon.
This product is also marketed as the 

3M COMPANY FB 136 10.1OZ Fire Block Caulk at Walmart

,

1 PC,3M FB-136 Fire Block Sealant 10.1 Oz, Gray, Thixotropic Paste at Walmart

,

3M Fire Block Sealant FB 136, Gray Color, Single Component, High Temperature and Smoke Passage Resistant, 10.1 fl oz Cartridge at Amazon

.

Description

This versatile gray fire block sealant is perfect for sealing interior construction voids. It resists high temperatures and smoke passage, ensuring safety in non-rated construction. Easy to apply with a caulking gun or putty knife, it offers strong adhesion and quick drying.