Underpinning is generally required when a building's foundation has failed, requiring remedial action to prevent further movement. Common scenarios include:
Subsidence Repair: Fixing sinking or settling foundations caused by soil issues, such as clay shrinkage.
Structural Instability: Addressing cracked walls, sticking doors, or sloped floors.
Increased Load: Strengthening foundations to support new extensions or additional floors.
Changing Subsoil Conditions: Improving stability following root damage from trees or underground water changes.
