Wandsworth · Greater London
Concrete repairs in Wandsworth
A crumbling balcony edge at a Wandsworth property is rarely just cosmetic. It is usually a sign of rusting steel inside, and the sooner it is repaired, the less concrete has to be broken out and rebuilt.
Guide price from£105per m² inc VAT
- Postcodes
- SW6, SW11, SW15, SW17, SW18
- Population
- about 330,000
- Area
- Greater London
- Pricing region
- London
What is the ground like in Greater London?
We cover the whole of Wandsworth, including postcode districts SW6, SW11, SW15, SW17, SW18; about 330,000 people live in the borough. We also take enquiries from nearby Hammersmith and Fulham (3 miles), Lambeth (3 miles) and Kensington and Chelsea (3 miles).
Much of Greater London sits on clay that shrinks in dry summers and swells in wet winters. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
Signs you may need concrete repairs
- Damp patches, white deposits or drips on a balcony or canopy underside
- Rust-coloured stains or streaks running down the concrete surface
- Exposed steel bars showing where concrete has fallen away
How much will concrete repairs cost in Wandsworth?
These are guide prices for Wandsworth, using London rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Concrete patch repair | £105 – £225 | per m² |
| Crack injection | £225 – £600 | per metre |
| Small jobs (minimum visit)est. | £560 – £1,100 | per visit |
Which repair method suits a home in Wandsworth?
Recasting or strengthening
Where steel has lost much of its section, or a lintel or canopy is too far gone to patch, the element is propped and rebuilt, replaced or strengthened to an engineer’s design. It is less common, but sometimes the more lasting option for small canopies and old precast lintels.
Best for: Badly corroded lintels, canopies and balcony edges
Crack injection
Cracks are sealed at the surface, then a low-viscosity resin is injected under pressure through ports until it fills the crack. A rigid resin bonds the two faces back together, while a flexible one seals live cracks against water. The choice depends on whether the crack is still moving.
Best for: Cracks letting water in, or splitting a slab or beam
What happens when we carry out concrete repairs in Wandsworth?
Photos and a description
Send photos of the damage close up and from a distance, plus the whole balcony, canopy or elevation. Tell us roughly how old the building is and whether anything has fallen, so we can judge whether to make it safe first.
Engineer where needed
If the steel has lost significant section, or the element carries a balcony, stair or wall, an independent chartered structural engineer is appointed to assess and specify. We can arrange this, and the repair follows their scope.
Written quote
You receive a no-obligation written quote setting out the estimated area of patching, the length of crack injection, coatings and access. It becomes a fixed price in writing once the repair is specified, with any re-measure terms stated clearly.
Rules for concrete 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.
Concrete repairs in Wandsworth: questions and answers
What is the price of concrete repairs in Wandsworth?
Guide prices for concrete repairs in Wandsworth start from about £105 per m², including VAT, on London rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you carry out concrete repairs in Wandsworth?
Yes. We take enquiries from across Wandsworth, including SW6, SW11, SW15, SW17, and from nearby places such as Hammersmith and Fulham and Lambeth. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Wandsworth cause cracking?
Most of Greater London sits on London Clay, among the most shrinkage-prone ground in the UK, with river gravels along the Thames. Subsidence claims here are among the most frequent in the country, especially after dry summers and near street and garden trees. Only an investigation can say why a particular building has moved.
Can you repair a cracked concrete lintel?
Often, yes. Spalling and small cracks in a concrete lintel can be patch repaired and the steel treated. If the lintel is badly cracked, sagging or the bars have lost much of their section, replacement is usually better, and the opening is propped while it is done.
Why does concrete crack and rust?
Concrete cracks as it shrinks, moves with temperature or carries more load than intended. Steel inside it rusts when carbonation or salts reach it and moisture gets in. The two feed each other: cracks let water in, and rusting steel expands and cracks the concrete further.
More repairs we carry out in Wandsworth
- Structural crack repairs
- Retaining wall repairs
- Gable end wall repairs
- Subsidence repairs
- Floor joist repairs
Concrete repairs near Wandsworth
Send close-up and wide photos of the damaged concrete at your Wandsworth property for a free initial assessment and a no-obligation written quote.