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Good Products for Sealing Cracks in Concrete Block Walls #2789801
06/27/20 10:25 AM
06/27/20 10:25 AM
Joined: Jul 2006
Posts: 1,287
New Jersey
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Powerflow Offline OP
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Powerflow  Offline OP
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Joined: Jul 2006
Posts: 1,287
New Jersey
We're in 'fix-up' mode because we will be selling soon. Our basement has concrete block walls and there are a number of cracks in the mortar and a few that go through the blocks themselves. I don't see any movement, just cracks. I want to do a quick patch job on the cracks and then paint the basement walls white so everything blends in. What would be the best products to use? If there is a good 'squeeze-tube' type of patch I'm all ears. Any ideas appreciated.

Re: Good Products for Sealing Cracks in Concrete Block Walls [Re: Powerflow] #2789822
06/27/20 11:20 AM
06/27/20 11:20 AM
Joined: Jan 2003
Posts: 32,882
Grand Prairie,Texas
stumpy Offline
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stumpy  Offline
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Joined: Jan 2003
Posts: 32,882
Grand Prairie,Texas
ACE hardware sells mortar in a premixed can.

Re: Good Products for Sealing Cracks in Concrete Block Walls [Re: stumpy] #2790295
06/28/20 01:06 PM
06/28/20 01:06 PM
Joined: Jan 2010
Posts: 667
Los Osos, Ca
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CKessel Offline
mopar
CKessel  Offline
mopar
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Joined: Jan 2010
Posts: 667
Los Osos, Ca
There are some vids on Youtube addressing this. I'm using the epoxy pack that Simpson[ the company that makes a lot of structure components for construction] makes for this purpose. There are other companies too. I got this off Amazon since the local stores did not carry it. Its a liquid low viscosity material that you pump into the crack using a caulking gun. The fun part for me is backstopping the fill to keep it from oozing out. I purposely did't lay on the epoxy paste like they say as my foundation has a lot of it above ground and didn't want the repair area to be see. A basement should be a breeze as its backfilled on the one side.


Carl Kessel
Re: Good Products for Sealing Cracks in Concrete Block Walls [Re: CKessel] #2790522
06/28/20 09:36 PM
06/28/20 09:36 PM
Joined: Mar 2009
Posts: 888
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parksr5 Offline
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I've used different stuff over the years and I found that I like normal mortar the best. If the cracks are larger, I like hydraulic cement. For smaller areas, I use older plastic containers to mix the mortar and just throw it away when I've done. I'm picky so, I normally go over my work with a damp sponge and everything blends in perfectly.

Re: Good Products for Sealing Cracks in Concrete Block Walls [Re: Powerflow] #2791103
06/30/20 06:20 PM
06/30/20 06:20 PM
Joined: Jan 2003
Posts: 1,231
Chicago, IL
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PLUM_72 Offline
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Posts: 1,231
Chicago, IL
Ive used stuff from Emecole to seal up a crack in my basement concrete walls. Works well. Watched a few videos and applied the stuff. It expands and sealed up any issue I had. This doesn't "blend" in very well unless you work the stuff afterward or hide it behind a framed wall.

https://emecole.com/diy-basement-wall-crack-repair/


1972 Dodge Challenger
Re: Good Products for Sealing Cracks in Concrete Block Walls [Re: Powerflow] #2791206
06/30/20 08:54 PM
06/30/20 08:54 PM
Joined: Jan 2003
Posts: 15,661
Jefferson State
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srt Offline
ESYC
srt  Offline
ESYC
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Joined: Jan 2003
Posts: 15,661
Jefferson State
Get some sikaflex 1a
clean and dry the cracks
fill and let dry
paint
this stuff bonds well and flexes







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