Portsmouth · Hampshire
Structural crack repairs in Portsmouth
A cracked wall in Portsmouth does not automatically mean subsidence. Thermal movement, rusting wall ties, tired lintels and old drains each leave their own pattern, and we look at the whole picture before recommending any repair to the brickwork.
Guide price from£90per metre of crack inc VAT
- Postcodes
- PO1, PO2, PO5
- Population
- about 210,000
- Area
- Hampshire
- Pricing region
- South East
Why does the ground in Hampshire matter for structural crack repairs?
Portsmouth is in Hampshire and takes in postcode districts PO1, PO2, PO5. About 210,000 people live there. Nearby, we also cover Fareham (5 miles), Hayling Island (5 miles) and Havant (6 miles).
Shrinkable clay is widespread in Hampshire. Ground movement here is more often linked to soils, drains and trees than to mining. Typical buildings in Hampshire: Victorian terraces in Portsmouth and Southampton, 1930s semis, and large post-war and new-build estates.
From first photo to finished repair
Send photos
Photograph the crack from a distance and close up, with a coin or tape measure for scale. From these we say whether it looks cosmetic, needs a visit or calls for an engineer.
Survey and record
On site we measure the width along the crack, note its pattern and check nearby drains, trees and openings. If the cause is unclear, gauges can be fixed across it and read over several months.
Deal with the cause
Leaking drains, failed ties, a sagging lintel or ground movement are put right first, sometimes through an insurance claim. Repairing a crack before its cause is fixed usually means paying for the same job twice.
Symptoms that point to structural crack repairs
- Daylight or a draught coming through a crack in an outside wall
- Cracks that reappear in the same place after filling and painting
- A crack noticeably wider at the top than the bottom, or the reverse
Guide prices for structural crack repairs in Portsmouth
Guide prices below are for homes in Portsmouth, on South East rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Crack stitching with helical bars | £90 – £200 | per metre of crack |
| Single crack, outside only (up to about 2 m)est. | £450 – £1,000 | per crack |
| Internal making good and redecoration of the crack lineest. | £170 – £560 | per room |
Methods for structural crack repairs
Crack stitching with helical bars
Stainless steel helical bars are grouted into slots cut along the bed joints, bridging the crack so the masonry works as one piece again. It is the standard repair for wider stepped and vertical cracks once whatever caused them has stopped.
Best for: Stable cracks wider than about 5 mm, or ones that keep reopening
Rebuilding a cracked section
Where bricks have split or the wall has moved out of line, the damaged area is taken down and rebuilt, bonded into sound masonry on either side. Reclaimed or matched bricks keep the repair discreet, with temporary support used where needed.
Best for: Badly displaced or broken brickwork
Rules for structural crack repairs in England
Like-for-like repairs such as crack stitching and repointing do not usually need building control approval in England, but anything that changes or strengthens the structure, such as underpinning or rebuilding a wall, does. If the work touches a party wall, the Party Wall etc. Act 1996 may apply.
Frequently asked questions
How much will structural crack repairs cost in Portsmouth?
Guide prices for structural crack repairs in Portsmouth start from about £90 per metre of crack, including VAT, on South East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Portsmouth?
Yes, Portsmouth is covered, along with postcode districts PO1, PO2, PO5. We also cover nearby Fareham and Hayling Island.
Is the ground in Hampshire prone to subsidence?
Central Hampshire is chalk, while the south around Portsmouth, Southampton and the New Forest fringe and the north-east around Farnborough sit on London Clay, Reading Beds and other clays and sands. The clay areas see seasonal movement near trees. Only an investigation can say why a particular building has moved.
What do stepped cracks in brickwork mean?
Stepped cracks usually mean part of the wall has moved and the weakest path, the mortar joints, has given way. They are common with subsidence and around openings. A thin stepped crack unchanged for years is often cosmetic, while a wide or tapered one should be looked at.
Can I just fill a crack and paint over it?
You can fill a fine crack that is not moving, and for many hairline cracks that is the right repair. Filling a crack that is still opening hides the evidence, and it will usually come back. If a filled crack returns within a year or two, have it assessed.
Other structural repairs in Portsmouth
- Boundary and garden wall repairs
- Floor joist repairs
- Resin injection ground stabilisation
- Underpinning
- Concrete repairs
Structural crack repairs near Portsmouth
Worried about a crack in Portsmouth? Photograph it with a tape measure across it, send it over, and we will tell you plainly whether it needs repair.