[StinkyPush]

Hi all,

I am in the process of laying down flooring in my utility room and ran across an interesting issue.
There appears to be a large gap between the bottom plate of an exterior wall and the slab. It appears too small to be a drain? It doesn’t run the length of the wall as far as I know. The gap is at least 3 inches deep

Am I ok to just fill it with concrete, or poly caulking?

1950s house, slab on grade, no basement or crawlspace.

Thanks!

 

[chandler48]

Are you located in the Rockies? If so it could be your floating foundation. Helps to know locations.

 

[Nealtw]

Poke something down and confirm that it is open to below.

 

[StinkyPush]

Are you located in the Rockies? If so it could be your floating foundation. Helps to know locations.

Sorry! Located in Alabama.

Poke something down and confirm that it is open to below.

It seems to go down into soil. Should also mention this is in the utility room with the water heater.

 

[Nealtw]

Sorry! Located in Alabama.



It seems to go down into soil. Should also mention this is in the utility room with the water heater.

Just clean it out for 2 or 3 inches and fill it with hydraulic cement.

 

[StinkyPush]

Just clean it out for 2 or 3 inches and fill it with hydraulic cement.

That's what I was leaning towards, but wasn't sure as to why there would be such a gap. It almost looks intentional, but who knows.

 

[Nealtw]

That's what I was leaning towards, but wasn't sure as to why there would be such a gap. It almost looks intentional, but who knows.

There might be a whole in the foundation right there for a pipe. You won't hurt anything by filling it.