Common questions
Questions we are asked
Common questions, answered by the people who do the work. If your question is not here, send it to us and a specialist will answer it.
Questions we hear
Common questions
How do I know if foundations have dropped?
Stepped cracking in brickwork, sloping floors and frames pulling out of square are the usual clues. On Guildford and Woking clay they often appear after a long, dry spell.
Is underpinning always the answer?
No. Many cases are solved by dealing with a tree or a drain, and underpinning is kept for foundations that cannot carry the building once the cause is removed. An assessment decides which applies.
What does underpinning actually involve?
Sections beneath the existing foundation are dug out in a set sequence and filled with concrete, or piles are driven down to firmer ground, so the load reaches soil that stays stable.
Who does the digging and the structural work?
A specialist underpinning firm carries out the work, from the design checks through to the excavation and the finished foundations.
Why do underpinning prices vary so much?
Depth to firm ground, the length of wall affected, access for machinery and whether piles are needed all change the price. The firm confirms its figure in a written quote after seeing the house.
How long could the work last?
It depends on the method and the length of wall, and the specialist firm sets out its expected programme once the design is settled.
Can underpinning be done on a terraced home in Kingston?
Often, although neighbouring walls and party wall matters need thought. Say in the enquiry whether the house is terraced or semi-detached.