How to seal this hole in foundation ??

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Old 09-20-18, 05:32 PM
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How to seal this hole in foundation ??

Looks like it's a hole from an appliance vent that someone put spray foam . Is there a better way to seal It.
basement is finished.

 
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Old 09-20-18, 05:36 PM
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Mortar mix, hydraulic cement, or anchor epoxy.
 
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Old 09-20-18, 05:45 PM
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How much of the spray foam should I take out
 
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Old 09-20-18, 05:47 PM
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As much as you want. At least 1", i'd say.
 
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Old 09-21-18, 07:16 AM
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I'd get all the spray foam out of there...It tends to rot, and also ants and animals chew it up and use it for nests. Get it all out and then fill with mortar or hydraulic cement as suggested above.
 
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Old 09-21-18, 08:29 AM
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Basement is finished tho...
 
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Old 09-21-18, 09:16 AM
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Doesn't matter. You can do everything from the outside. Dig out the foam with a putty knife or old screwdriver. Get some mortar mix, the type that includes sand so all you have to do is add water. Mix it up to a stiff consistency and pack it into the hole. Then smooth the mortar off flush with the foundation. If you want to get fancy come back in 4-8 hours after it has partially set and hit it with a steel brush which will give it a rough texture that might blend in better than smooth mortar.
 
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Old 09-21-18, 09:30 AM
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What Dane said...
If there is no way at all you can get at the wall in the basement that is your option.
Maybe you can access the inside location of the hole, put a piece of masonite or something there as a backer to fill against.
 
 

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