Underpinning work explained
If your home shows signs of movement that suggest unstable foundations, underpinning may be recommended. It is not always the first or only option, but when required, it restores stability by strengthening what lies beneath.
Movement that won’t settle needs checking
You’ve noticed new cracks, sticking doors or uneven floors that keep coming back after redecoration. These can signal that part of your home is sinking while the rest stays put, a classic sign of differential settlement. In older properties across Leeds, especially where clay soils shrink in dry spells or drains leak unnoticed, this movement can compromise the foundation’s ability to carry the load.
Underpinning addresses this by extending or reinforcing the existing footings so they reach stable ground. It is a major intervention, reserved for cases where monitoring shows ongoing movement or where structural integrity is at risk. A specialist will first rule out simpler causes, such as thermal cracking or minor settlement in newer builds, before considering it.
What you receive after the work
The specialist documents the condition before, during and after any intervention, giving you clear evidence of what was done and why.
Written method statement
You get a clear explanation of which underpinning technique was chosen and why it suits your property’s structure and ground conditions.
As-built drawings
Once work finishes, the specialist provides scaled drawings showing exactly where and how the foundations were strengthened.
Insurance-ready report
If your buildings insurance covers subsidence, the specialist can supply a detailed report you may choose to send to your insurer to support a claim.
Signs that may point to foundation issues
Not every crack means underpinning is needed, but these patterns often prompt a closer look.
Diagonal wall cracks
Cracks wider than 3mm running diagonally near window corners can indicate foundation movement, especially if they appear on both internal and external walls.
Doors binding suddenly
If multiple doors start sticking in their frames without seasonal humidity changes, it may reflect shifting floor levels caused by uneven settlement.
Visible step in floors
A noticeable change in floor height between rooms, particularly over ground-floor extensions or rear additions, often signals localised sinking.
How it works from your side
You stay in control throughout, with no obligation after the initial conversation.
Submit your enquiry
You describe what you’ve seen; we pass it to one specialist covering your area in Leeds or its surrounding towns.
Specialist contacts you
They arrange a site visit at a time that suits you, usually within a few days, to inspect the property and take measurements.
Options are explained
After surveying, the specialist outlines whether underpinning is necessary, or whether resin injection, screw piling or even no work is more appropriate, and quotes for any recommended repair.
Worth reading next
What we do
Cracked Concrete Floors, Slabs and Walls
How to tell if cracked concrete needs subsidence investigation.
Resin Injection Ground Stabilisation
What resin injection involves and when it may suit your home.
Screw Piling for Foundations
How screw piling stabilises foundations where traditional methods won’t work.
Questions we hear in Leeds
Is underpinning always the answer to subsidence?
No. Many cases are resolved by fixing leaking drains, removing nearby trees, or using resin injection to re-level slabs. Underpinning is reserved for situations where the existing foundation is structurally inadequate or movement hasn’t stabilised.
How long does underpinning take in a typical Leeds house?
It varies by method and extent, but a standard terrace might take four to eight weeks. The specialist works in short bays to maintain stability throughout.
Will my buildings insurance cover underpinning?
Some policies do, provided the cause is an insured peril like subsidence due to soil shrinkage. Check your policy wording and speak to your insurer early; the specialist can supply a report if needed.
Can underpinning be done from outside only?
Sometimes, but internal access is often needed, especially for beam-and-base methods. The specialist will explain what’s required for your layout during the survey.
What you have read here is general background on subsidence rather than guidance about your own building, and only an inspection can say what holds true at your address.
Get clarity on your situation
There’s no charge for submitting your details, and you’re free to get other quotes once the specialist contacts you.