Bolton · Greater Manchester
Floor joist repairs in Bolton
If a plumber or electrician has recently had the boards up at your Bolton home, the joists they worked around are worth a look. Deep notches and holes in the wrong place weaken joists quickly, and sistering them is usually a short, tidy job.
Guide price from£240per joist inc VAT
- Postcodes
- BL1, BL2, BL3
- Population
- about 140,000
- Area
- Greater Manchester
- Pricing region
- North West
What should you know about the ground under Bolton?
Bolton, Greater Manchester: about 140,000 residents across postcode districts BL1, BL2, BL3. Nearby places we cover include Westhoughton (4 miles), Radcliffe (5 miles) and Horwich (5 miles).
Greater Manchester has a mix of ground, with clay in some places and firmer rock in others. 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.
Repair options we may recommend
Sleeper walls and ventilation
Settled or damp sleeper walls are rebuilt on a sound base with a damp-proof course under new timber plates. Blocked air bricks are cleared, extra ones added where the void has dead spots, and soil or paving heaped against the outside wall is lowered.
Best for: Damp ground floor voids or joists on poor supports
Sistering a joist
A new length of treated timber, the same depth as the original, is bolted or screwed alongside the damaged joist so the two share the load. It is the quickest fix for a notched, cracked or sagging joist that is otherwise sound, usually after lifting a few boards.
Best for: Cut, cracked or sagging joists with sound ends
What to expect when we carry out floor joist repairs
Photos and a call
Send photos of the dip or soft area, the outside wall at ground level and any air bricks. A short call about when it started, and any recent plumbing or heating work, tells us whether the problem is local or widespread.
Written quote
You get a no-obligation written quote listing which joists are sistered, spliced or replaced and any sleeper wall or ventilation work. It becomes a fixed price in writing once the repair is specified.
Relay and ventilate
Boards are relaid or replaced, skirting refitted and air bricks cleared or added outside. We point out anything that would let damp back in, such as soil heaped against the wall, so the repair lasts.
Is it time for floor joist repairs? Common signs
- A musty smell, or fungal strands showing between the boards
- Floor dipping towards an outside wall or in the middle of the room
- Ceiling cracks below that follow the line of the joists
What should you budget for floor joist repairs in Bolton?
Guide prices below are for homes in Bolton, on North West rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Splicing or sistering a damaged joist | £240 – £385 | per joist |
| Whole room of joists and boards | £1,900 – £5,750 | per room |
| Sleeper wall rebuild and ventilationest. | £385 – £1,450 | per room |
Rules for floor joist 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.
Your floor joist repairs questions
What is the price of floor joist repairs in Bolton?
Guide prices for floor joist repairs in Bolton start from about £240 per joist, 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 carry out floor joist repairs in Bolton?
Yes. We take enquiries from across Bolton, including BL1, BL2, BL3, and from nearby places such as Westhoughton and Radcliffe. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Bolton cause cracking?
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.
Do I need building control for floor joist repairs?
Usually not for like-for-like repairs to a few joists, but replacing a whole floor structure can be building work. In Scotland that generally needs a building warrant, and in Northern Ireland council building control applies. We deal with building control where the work needs it.
What is sistering a floor joist?
Sistering is fixing a new length of timber alongside an existing joist so the two share the load. It strengthens a notched, cracked or sagging joist without removing it, so it is quicker and less disruptive than replacement.
More repairs we carry out in Bolton
- Boundary and garden wall repairs
- Structural surveys and crack monitoring
- Crack stitching
- Chimney stack repairs
- Underpinning
Floor joist repairs near Bolton
For a guide price on floor joist repairs in Bolton, use the quote tool or send photos of the dip, any soft boards and the air bricks.