Customer Reviews for 3M 10.1 fl. oz. Gray Fire Block FB 136 Sealant

Internet #100390499

Model #FB 136

Store SKU #191728

  • Ready-to-use formula, no mixing required
  • Water based caulk dries to gray color
  • Ideal for use in non-rated residential construction

Customer Reviews

  • 4.4
    out of 109 reviews
  • 85% recommend this product
5star-icon70
4star-icon24
3star-icon2
2star-icon5
1star-icon8
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Showing 1-10 of 109 reviews
Works Great . On older flue pipes
Works Great . On older flue pipes
by RC
it worked like a dream from my application, the grey coloring just happened to be the color that ...
it worked like a dream from my application, the grey coloring just happened to be the color that I needed that was unexpected but very nice. The temperature rating was the final decision maker for me to purchase, the rest of the fireblocks didn't have heat ratings on the label. All in all I would recommend this product to anybody looking to seal high temperature leeks and or heat evacuation points from any closed loop duct system.
by DrOlson
great product easy to push out tube works great on concrete board spreads easy and also easy to c...
great product easy to push out tube works great on concrete board spreads easy and also easy to clean up. would recommend
by prostreetdave
Worked really well on my pellet stove, had to seal the joints up on the top stack of the stove it...
Worked really well on my pellet stove, had to seal the joints up on the top stack of the stove it leak from time to time probably have to do this each season.
by Jim
Easy application. I was sealing around a gas fireplace. After...
Easy application. I was sealing around a gas fireplace. After a couple of uses, it is now crumbling and falling out
by Tank
Works great. Don't leave a feather edge as it will...
Works great. Don't leave a feather edge as it will separate when heated and become sharp
by HomeDepotCustomer
Use this to seal around a wood stove pipe as it goes into the chimney. Does a great job of sealin...
Use this to seal around a wood stove pipe as it goes into the chimney. Does a great job of sealing, and no problem with high heat areas. Highly recommend.
by Bob
Goes down smooth, easy to manipulate, and sealed in no...
Goes down smooth, easy to manipulate, and sealed in no time. Great product, my go-to!
by Swervebros
It was typically easy to apply and did the job. Next question is how long will it last.
It was typically easy to apply and did the job. Next question is how long will it last.
by MARVIN
by RW
Showing 1-10 of 109 reviews