Wigan · Greater Manchester
Bay window subsidence repairs in Wigan
If your Wigan bay window has started sticking and a gap has opened at the junction, it is worth finding out whether the bay is still moving. A stable crack needs a straightforward tie-in, whereas an active one may need a new foundation.
Guide price from£575per bay inc VAT
- Postcodes
- WN1, WN3, WN5
- Population
- about 180,000
- Area
- Greater Manchester
- Pricing region
- North West
Why does the ground in Greater Manchester matter for bay window subsidence repairs?
Wigan (WN1, WN3, WN5) has around 180,000 residents and sits in Greater Manchester. If you are just outside Wigan, we also cover Hindley (2 miles), Ashton-in-Makerfield (4 miles) and Westhoughton (5 miles).
Parts of Greater Manchester have clay that can shrink near trees in dry spells. Parts of Greater Manchester lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Housing stock in Greater Manchester: Red-brick terraces, mill-town stone terraces, inter-war semis and post-war estates.
What to look for before calling about bay window subsidence repairs
- A step or slope in the bay floor towards the window
- Cracks above the bay window head or below the sill
- Bay window sash or casement sticking or binding
Bay window subsidence repairs prices in Wigan
The ranges below reflect typical North West costs for bay window subsidence repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Bay junction crack repair and tie-inest. | £575 – £1,750 | per bay |
| Traditional underpinning of a bay | £2,900 – £6,700 | per bay |
| Mini-piled bay underpinning | £4,800 – £11,500 | per bay |
How we usually approach bay window subsidence repairs
Traditional underpinning of the bay
The bay footing is excavated in short sections and new mass concrete is placed down to firmer ground below the zone affected by roots and seasons. Because a bay is a short length of wall, the work is compact, but it needs building control approval.
Best for: Active bay movement on firm ground at moderate depth
Mini-piled bay underpinning
Small piles are installed to depth around or beneath the bay and linked by a reinforced beam or needles that pick up its weight. It suits deeper soft ground and heavy root activity, and the compact rigs fit into a front garden.
Best for: Deep clay, nearby trees, or poor ground below the bay
What happens during bay window subsidence repairs, step by step?
Photos and first view
Send photos of the outside junction, the inside corners and the window, with a scale. We give a free initial assessment and tell you whether the crack looks old and stable or whether an engineer should inspect first.
Engineer and checks
Where the cause is unclear, an independent chartered structural engineer inspects, sometimes with a trial pit at the bay and a drain survey. We can arrange the engineer. Monitoring may be suggested if the movement could be seasonal.
Carry out the work
Ties are fitted across the junction, or the bay is underpinned in sequence with building control inspecting the dig. The bay window and flashings are checked and eased or resealed where the movement has disturbed them.
Rules for bay window subsidence repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Questions about bay window subsidence repairs in Wigan
How much will bay window subsidence repairs cost in Wigan?
Guide prices for bay window subsidence repairs in Wigan start from about £575 per bay, including VAT, on North West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Wigan?
Yes. We take enquiries from across Wigan, including WN1, WN3, WN5, and from nearby places such as Hindley and Ashton-in-Makerfield. Send photos for a free initial view and we will tell you what happens next.
Is the ground in Greater Manchester prone to subsidence?
Greater Manchester is mostly glacial till over sandstone and mudstone, with the Lancashire coalfield beneath much of Wigan, Bolton, Salford and parts of the east. Historic mine workings, made ground and old mill sites are common. Only an investigation can say why a particular building has moved.
Is a crack between my bay and the house serious?
It is often not serious, especially if it is old, fine and unchanged for years. A crack that is widening, tapering or matched by sticking windows and a sloping bay floor needs looking at. An engineer’s inspection, sometimes with monitoring, will confirm whether the bay is still moving.
Will the bay window need replacing?
Usually not. Most windows can be eased, packed or resealed once the bay is stable. If the frame has twisted badly or the glass has cracked, replacement may be worth considering. Under a claim, upgrades beyond like-for-like are normally priced separately.
Other structural repairs in Wigan
- Lintel replacement
- Mining subsidence repairs
- Structural surveys and crack monitoring
- Crack stitching
- Floor joist repairs
Bay window subsidence repairs near Wigan
If your insurer is handling a bay claim at your Wigan property, share the schedule and we will price the repair to it in writing.