Lowering Concrete Floor Basement. Make sure you spread it out and make the surface even. The first step in lowering the basement is to remove the concrete floor, breaking it up with sledge hammers or jackhammers. For example, if you want to lower your basement floor 6 inches, you'll want to dig at least 14 to 16 inches.
Adding Self-Leveling Concrete to a Basement Floor ...
If you have a damper basement, opt for 3/8 dimpled polyethylene. The home is 30 years old. By underpinning a house, the foundation walls and footings are extended down to a lower level so that the basement floor can be safely excavated in order to gain extra headroom.
Gallery of Lowering Concrete Floor Basement
But this direct installation will result in a floor that's cold underfoot. As a ballpark figure, you can look at between $35 and $70 per square foot, according to renoassistance. 20' x 50 is basement and 14' x 50 is 3' to 4' high dirt crawl space. If you have a damper basement, opt for 3/8 dimpled polyethylene.
