Underpinning in Crawley
Surveys, design, and installation across Crawley and surrounding towns.
- UK-wide coverage and local knowledge
- 20 year remedial warranty
- Diagnostics to remedial work
Our Crawley team handles foundation repair across the wider West Sussex area. We regularly work in Worthing, Chichester, Horsham, Bognor Regis and Littlehampton, on Victorian terraces, semi-detached houses, modern builds, and commercial properties.
Local coverage
Every job starts with a free site survey. A chartered structural engineer signs off the design before any work begins, and the installation is backed by a 10-year workmanship guarantee.
Ground conditions in Crawley
high prevalenceMixed ground with bands of London Clay, Weald Clay, Gault Clay and chalk depending on location.
Plastic clays across much of the region are sensitive to drought years and tree-related drying.
- Clay-dominated ground
- Mature trees in established suburbs
- Localised chalk and greensand
Methods we use locally
The right method depends on soil conditions, depth of failure, and access on site. The engineer's design decides, these are the options on the table for Crawley properties.
| Method | Time on site | Best for in Crawley |
|---|---|---|
|
Beam and base
Reinforced concrete beams that spread the load. |
2 to 6 weeks | Variable ground, bay windows, redistributing loads. Common on bay windows and settled extensions through Horsham and Bognor Regis where loads need redistributing along a single elevation. |
|
Foam injection
Lightweight stabilisation that works to depth. |
1 day for most jobs | Slab re-levelling, void fill, conservatory bases. Useful for re-levelling slabs and floors in Bognor Regis and Littlehampton, where access for excavation is tight and disruption must be kept low. |
|
Mass concrete
The traditional method, done properly. |
2 to 6 weeks per elevation | Shallow failures on traditional ground, insurance claims. Well-suited to traditional brick properties across Crawley, Worthing and Chichester where shallow bays can reach competent ground by hand. |
|
Mini piled
When the good ground is a long way down. |
1 to 3 weeks on site | Deep bearing layers, made-up ground, restricted access. The usual answer for deep clay or made-up ground around Crawley and Littlehampton, and for rear-only access through the property. |
|
Resin injection
Targeted ground improvement, no excavation. |
1 day for most jobs | Granular soils, intact foundations, voids and density loss. Quick non-disruptive fix for shallow void filling and ground stabilisation across West Sussex, suited to lighter loads in Worthing and Horsham. |
|
Screw pile
Helical piles, no concrete cure time. |
2 to 5 days | Lighter loads, time-critical jobs, conservatories. Low-vibration option for terraces close to neighbours in Chichester and Worthing, with quick installation and minimal spoil. |
Areas we cover near Crawley
Common questions
Need an opinion on a Crawley property?
A surveyor will be in touch within 48 hours.