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Tummon 11-05-2012 02:12 PM

Basement Renovation - (Old) Foundation Question
I'm currently in the middle of renovating our basement washroom and laundry room. While removing the tile from the concrete floor, I noticed areas that sounded very thin (almost hallow) and there was quite a bit of moisture, in an otherwise dry basement. I was actually able to punch through the floor with my hammer. There was just loose and damp dirt/sand under the floor in the laundry room. As a result, I decided I was going to bring up the floor, put down some weeping tile to drain off any water, a proper base, then repour the floor. While digging out the floor, I found the stone foundation (the house is about 110 years old) isn't sitting on any footings, just bare soil.

My question is, is this an issue? Should I try and underpin this section? I think this is pretty normal for homes of this era and I suspect the rest of the foundation is similar.

Any help or insight would be really appreciated!


jomama45 11-05-2012 02:25 PM

I've never seen footings under a stone foundation and it's extremely common to have very thin sections of floor (along with much thicker areas) with a void below......

Canarywood1 11-05-2012 03:16 PM

I agree with the previous poster,i've seen floors range from an inch thick to 3 inches,and everything inbetween.

Tummon 11-07-2012 09:56 AM

Thanks for the feedback!
It sounds like my fears were unjustified and I can just go ahead as planned.

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