At SA underpinning we address all your underpinning needs for commercial and residential properties. The moment you notice cracks appearing on any internal or external section of a building, then such cracks on your wall indicate the presence of some structural stresses that are destabilizing the foundation of your structure.This state can be brought about by erosion, soil movement or earthquakes to some extent. In such a situation, you need to thoroughly think of the best way to support your foundation through underpinning.