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JEvert

07:35PM | 05/09/05
Member Since: 05/08/05
3 lifetime posts
Bvbasement
I just bought a new home in Montana with a basement that I am planning on finishing. The walls of the basements have small oval concrete protusions that stick out about 1". These are spaced about 2 feet apart both vertically and horizontially across the entire surface of the walls. Within each "Knob" there appears to be a 1/4" square steel rebar. I have purchased four books on finishing basements and have not seen anything like this. I am assuming these are from the concrete forms they used to pour the foundation walls. My real question is how will I be able to attach the stud wall I intend to build or any type of insulation. I was intending on using rigid insulating panels but attaching them to the walls would be very difficult with these protrusions. Any ideas.....?

RadicalSheep

10:06PM | 05/12/05
Member Since: 04/29/05
17 lifetime posts
Well you are right all those rebar protersion are from when the basement was poured.

But lets forget about that. When you put up your walls I would not put your walls up against the outside walls. You should have the walls three inches in from the outside wall. This will give you a proper vapour barrier. So do not worry about it just come in 3 inches and build walls.

Piffin

12:32PM | 05/21/05
Member Since: 11/06/02
1281 lifetime posts
Sheep had a pretty radical suggestion there.

The projections are only crete from the pour. The metal is not rebar but is the snap off metal form ties. The concrete subcontractor should have removed all this, but obviously didn't finish the job. All it takes is a whack with a claw hammer or a chisle end of a mason's hammer. The metal tie will probably still be left. It is brittle steel. You can break it off with another couple of whacks or use a vice grip to give it a quick twist.

The finishing can be done with a normally framed wall and an inch of ventilation between crete and framing for ventilation or you can use one of the foam and furring methods. One good way is well described in an article in Fine Homebuilding Magazine from about three montha ago

Excellence is its own reward!


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