Underpinning is the process of strengthening and stabilizing the foundation of an existing building or other structure. Underpinning may be necessary for a variety of reasons:

• * 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.

Underpinning is accomplished by extending the foundation in depth or in breadth so it either rests on more supportive soil stratum or distributes its load across a greater area. Use of micropiles and jet grouting are common methods in underpinning. An alternative to underpinning is the weakening of the soil by the introduction of a grout.

Ontario Carpentry footings can help you. Please give us a call at 416 670 -1067 so that we can help you in your underpinning projects or fill up our contact form here