This might be the process if you plan to increase the height of your existing basement or crawl space to achieve more living area at the comfort of your house, add stories to an existing structure or when the foundation has been damaged. The most used method of underpinning is mass pour method. Excavate sections in sequence to a per-established depth below the footing and place concrete on each pit. Repeat the method until the entire affected area has been underpinned.
The original foundation is simply not strong or stable enough.
The usage of the structure has changed.
The properties of the soil supporting the foundation may have changed (possibly through subsidence) or were mischaracterized during planning.
The construction of nearby structures necessitates the excavation of soil supporting existing foundations.
It is more economical, due to land price or otherwise, to work on the present structure’s foundation than to build a new one.
Increase basement height for more living space or converting crawl space into a full size basement.
As a home owner you might have a lot of question in regard to lowering basement floor and it process underpinning foundation wall to increase basement height. Let’s walk throw this together and get answer for few of them & remember you can always reach to us at 647.774.0761 with more question as we are one of the trusted underpinning contractors in Toronto.