York · North Yorkshire
Floor joist repairs in York
If a plumber or electrician has recently had the boards up at your York 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
- YO1, YO10, YO31
- Population
- about 160,000
- Area
- North Yorkshire
- Pricing region
- Yorkshire and the Humber
What should you know about the ground under York?
We cover York and its postcode districts YO1, YO10, YO31, part of North Yorkshire, with a population of roughly 160,000. We also take enquiries from nearby Selby (12 miles), Kippax (18 miles) and Harrogate (19 miles).
Parts of North Yorkshire have clay that can shrink near trees in dry spells. Parts of North Yorkshire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. What you mostly find across North Yorkshire: stone cottages, Georgian and Victorian houses in York and Harrogate, and brick terraces on Teesside.
What should you budget for floor joist repairs in York?
The ranges below reflect typical Yorkshire and the Humber costs for floor joist repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Splicing or sistering a damaged joist | £240 – £380 | per joist |
| Whole room of joists and boards | £1,900 – £5,700 | per room |
| Sleeper wall rebuild and ventilationest. | £380 – £1,400 | per room |
Repair options we may recommend
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
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
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.
Lift boards and inspect
On site we lift a few boards where the floor is worst and check the joist ends, sleeper walls and void with a moisture meter. Outside, we look for high ground, blocked vents and leaks keeping the timber wet.
Repair the structure
Boards are lifted and numbered if they are going back, and rotten timber is cut out. New treated timber is fixed and checked with a level before strutting, hangers and any restraint straps go in.
Is it time for floor joist repairs? Common signs
- Floor dipping towards an outside wall or in the middle of the room
- Floor bouncing, or ornaments rattling, when someone walks across
- A musty smell, or fungal strands showing between the boards
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 York?
Guide prices for floor joist repairs in York start from about £240 per joist, including VAT, on Yorkshire and the Humber 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 York?
Yes, York is covered, along with postcode districts YO1, YO10, YO31. We also cover nearby Selby and Kippax.
Does the ground around York cause cracking?
North Yorkshire ranges from limestone dales and moors to clays and glacial deposits in the Vale of York, with the Selby coalfield in the south and ironstone workings in Cleveland. Teesside has areas of soft and made ground. Only an investigation can say why a particular building has moved.
Why is my floor bouncy?
A bouncy floor usually means the joists are deflecting too much, often because they span too far, have lost their strutting or have been weakened by notches. It rarely means imminent failure, but it is worth checking, especially if the bounce appeared after work in the room.
What causes rot in floor joists?
Damp causes almost all joist rot. Joist ends in damp walls, voids with blocked air bricks, leaking pipes and high outside ground levels keep timber wet enough for fungi to grow. Replacing timber without fixing the damp usually means the rot returns.
More repairs we carry out in York
Floor joist repairs near York
Send photos of the floor and the outside wall at your York property for a free initial assessment and a no-obligation written quote.