Underpinning is a process in which you lower the basement floor by adding new concrete footing under existing.
On some older houses lots are very small so there is no room to make an addition or build a new home of same size or bigger. So only way to obtain more living space is to lower the basement floor and turn it into fresh and new living space.
Underpinning is a demanding work which you have to leave to professionals. To lower the basement floor and get full height living space you have to pour concrete direct under existing footing of the house. Older houses will often have no footing since they were built on brick. In that case approach is bit different since brick is not solid and crumbles easier than concrete. Structural engineer is most often first step and he will determine correct procedure for your home. Swift renos includes structural engineer in our contract, as well as drawings and city permits.
In order to underpin the house you have to dig soil under the footings, form it and pour new reinforced concrete. Outside soil is pushing in so if you were to remove all dirt walls would crack and cave in, that’s why work need to be done in sections so structure of the house is not compromised at any point in the process.
After underpin is done, next step is waterproofing, plumbing and pour concrete slab, framing, electrical, drywall etc. We have all trades in our company so we can provide high end finished product.
Many things can go wrong when underpinning a house (open to many pins, make to big sections, no temporary supports for upper floors etc) so make sure you hire a contractor who knows what he is doing and is insured as well.
We take your project start to finish, no subcontracts, no waiting for other trades. We know that renovation process can be overwhelming so we are ready to guide you through.