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Auggie

(33,378 posts)
Fri Jun 26, 2026, 11:57 AM 8 hrs ago

Concrete patch in foundation

Hi. I'm having some outdoor plumbing moved that will leave about a one inch oval hole in the house foundation with direct access to the crawl space.

I need to fill the hole to keep out rodents and paint to match existing color (surrounding concrete is freshly painted).

I was thinking of getting a small 1 qt tub of pre-mix cement from the home center but don't know if it should be "regular" or hydraulic. Leaks from rain are not really issue -- the hole is several inches above grade and there's about zero chance of flooding in arid California.

Any helpful hints?

9 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Concrete patch in foundation (Original Post) Auggie 8 hrs ago OP
I would recommend an UpInArms 8 hrs ago #1
Thanks! Auggie 8 hrs ago #2
I've used steel wool w/epoxy caulk. Cheap works great. tazcat 8 hrs ago #3
I like the idea Auggie 7 hrs ago #8
regular Whip-poor-will 8 hrs ago #4
Thank you for clarifying Auggie 7 hrs ago #7
Stainless steel wool scrubber will work fine TexLaProgressive 8 hrs ago #5
Certainly the easiest. Thanks. Auggie 7 hrs ago #6
I would use the hydraulic cement. Hassin Bin Sober 4 hrs ago #9

Whip-poor-will

(636 posts)
4. regular
Fri Jun 26, 2026, 12:09 PM
8 hrs ago

Hydraulic cement is meant to prevent water moving up through a slab .On a vertical surface regular will do just fine and match the surface texture

TexLaProgressive

(12,840 posts)
5. Stainless steel wool scrubber will work fine
Fri Jun 26, 2026, 12:13 PM
8 hrs ago

If you want more apply a masonry caulk like LOCTITE PL Poly Concrete and Masonry Sealant to the wool.

Auggie

(33,378 posts)
6. Certainly the easiest. Thanks.
Fri Jun 26, 2026, 12:31 PM
7 hrs ago

Yeah, I'd have to finish the surface with the masonry caulk and texturize to match the surrounding area.

Hassin Bin Sober

(27,561 posts)
9. I would use the hydraulic cement.
Fri Jun 26, 2026, 03:46 PM
4 hrs ago

It may not match but it won’t shrink. If you are painting it the color match won’t matter anyway.

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