This is not a diy task and requires proper engineering.
Lowering a basement floor diy.
For example if you want to lower your basement floor 6 inches you ll want to dig at least 14 to 16 inches.
While bench footing is probably the quickest and least expensive way to deepen your basement you should realize that the area of the basement floor will be reduced and a full length bench along the wall limits your options for use of the space.
Then after all the finishes have been removed and all the mechanical systems disconnected comes the fun part.
Bench footing is a process through which you can lower the basement and provide extra structural support to the foundation.
First you have to figure out how to support the existing house.
Things are moving along in the basement we decided to use a bench footing technique to gain more headroom.
There is no need to dig under the foundation in order to provide extra.
Lowering the floor will usually require underpinning the foundation footings.
A house s foundation is tricky business.
Lowering a basement floor is as difficult as it sounds.
Lowering a basement floor often referred to as underpinning in the contractor world is a process of digging out the existing basement floor and simply lowering it a foot or so.
Steven aug 25 14 at 16 26 people dig out basements all the time to raise ceiling height.
Make sure you spread it out and make the surface even.
Check my blog post on an in depth guide on flooring options once you are done lowering the basement.
Typical cost for preparing the complete design package required by the municipality for a basement lowering project is between 2 800 for underpinning design only to around 3 800 if you want us to design the new interior basement space show floor drains new laundry room layout specify insulation show location of new stud wall.
How to lower a basement floor 101 in simple terms your dig out the dirt to make enough headroom extend the foundation all the way below fix the drainage system put in a floor and finish up the basement.
Basement lowering underpinning and basement renovations.
Always remember though that you should dig at least 8 to 10 inches deeper than where you want your finished floor to be.
Breaking up the slab excavating dozens of yards of dirt by hand and underpinning the existing footings.