Yarm · North Yorkshire
Floor joist repairs in Yarm
If your floor in Yarm dips by a wall or bounces in the middle of the room, the joists are worth checking. Send photos of the floor, the outside wall at ground level and any air bricks, and we will tell you what the pattern suggests.
Guide price from£240per joist inc VAT

- Postcodes
- TS15, TS16, TS17
- Population
- about 19,000
- Area
- North Yorkshire
- Pricing region
- Yorkshire and the Humber
Why does the ground in North Yorkshire matter for floor joist repairs?
Postcode districts TS15, TS16, TS17 cover Yarm, a North Yorkshire town of about 19,000 people. If you are just outside Yarm, we also cover Thornaby-on-Tees (3 miles), Stockton-on-Tees (5 miles) and Middlesbrough (7 miles).
Clay soils are found in parts of North Yorkshire. Parts of North Yorkshire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Typical buildings in North Yorkshire: Stone cottages, Georgian and Victorian houses in York and Harrogate, and brick terraces on Teesside.
What happens when we carry out floor joist repairs in Yarm?
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.
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.
Signs you may need floor joist repairs
- Soft or spongy boards near outside walls, hearths or the bathroom
- A musty smell, or fungal strands showing between the boards
- A gap opening up between the skirting board and the floor
How much will floor joist repairs cost in Yarm?
These are guide prices for Yarm, using Yorkshire and the Humber rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| 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 |
Which repair method suits a home in Yarm?
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
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.
Floor joist repairs in Yarm: questions and answers
How much should I budget for floor joist repairs in Yarm?
Guide prices for floor joist repairs in Yarm 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.
Can you survey a property in Yarm?
We do. Yarm and the surrounding area are covered, including nearby Thornaby-on-Tees and Stockton-on-Tees. A free initial assessment from your photos is the first step.
Why do houses in North Yorkshire crack?
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.
Will my insurance pay for rotten floor joists?
Usually not, because rot, woodworm and gradual wear are standard exclusions. Damage from a sudden escape of water, or a floor that dropped through subsidence, may be treated differently. Check your policy, and tell your insurer before permanent repairs start if either applies.
Is a sagging floor dangerous?
A gentle, long-standing sag is usually not dangerous, and many older floors have moved slightly over a century. A sag that is getting worse, soft boards or a floor dropping near a wall needs checking soon, because rotten joist ends can lose their bearing.
Related work in Yarm
- Chimney stack repairs
- Boundary and garden wall repairs
- Subsidence repairs
- Resin injection ground stabilisation
- Retaining wall repairs
Floor joist repairs near Yarm
For a guide price on floor joist repairs in Yarm, use the quote tool or send photos of the dip, any soft boards and the air bricks.