Wimborne Minster · Dorset
Floor joist repairs in Wimborne Minster
Floor joist repairs in Wimborne Minster start underneath the boards, not on top of them. We look at the joist ends, the sleeper walls and the ventilated void before suggesting sistering, splicing or replacement, so the price reflects the timber you actually have.
Guide price from£260per joist inc VAT

- Postcodes
- BH17, BH18, BH21
- Population
- about 16,000
- Area
- Dorset
- Pricing region
- South West
What should you know about the ground under Wimborne Minster?
With roughly 16,000 people, Wimborne Minster spans postcode districts BH17, BH18, BH21 in Dorset. If you are just outside Wimborne Minster, we also cover Ferndown (4 miles), Poole (5 miles) and Bournemouth (6 miles).
Parts of Dorset have clay that can shrink near trees in dry spells. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Dorset: Stone and brick villages, Victorian villas in Bournemouth, and inter-war and post-war semis.
What to look for before calling about floor joist repairs
- A musty smell, or fungal strands showing between the boards
- Soft or spongy boards near outside walls, hearths or the bathroom
- A gap opening up between the skirting board and the floor
Floor joist repairs prices in Wimborne Minster
Prices in Wimborne Minster are worked out on South West rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Splicing or sistering a damaged joist | £260 – £410 | per joist |
| Whole room of joists and boards | £2,050 – £6,200 | per room |
| Sleeper wall rebuild and ventilationest. | £410 – £1,550 | per room |
How we usually approach floor joist repairs
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
Replacing joists and boards
When rot or woodworm runs through most of a floor, it is usually cheaper to replace the joists, strutting and boards together. Where joists run parallel to an outside wall, restraint straps tie the new floor back to it so the wall keeps its lateral support.
Best for: Widespread rot, or a whole floor that has dropped
What happens during floor joist repairs, step by step?
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.
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.
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.
Questions about floor joist repairs in Wimborne Minster
What is the price of floor joist repairs in Wimborne Minster?
Guide prices for floor joist repairs in Wimborne Minster start from about £260 per joist, including VAT, on South 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 Wimborne Minster?
Yes, Wimborne Minster is covered, along with postcode districts BH17, BH18, BH21. We also cover nearby Ferndown and Poole.
Does the ground around Wimborne Minster cause cracking?
Dorset mixes chalk downs, Oxford and Kimmeridge Clays in the vales, and the sands and gravels of the Poole basin. Clay vales can shrink and swell, and parts of the coast are known for landslip. 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.
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.
More repairs we carry out in Wimborne Minster
- Resin injection ground stabilisation
- Concrete repairs
- Underpinning
- Structural crack repairs
- Extension pulling away repairs
Floor joist repairs near Wimborne Minster
If a floor in Wimborne Minster has dropped after plumbing or heating work, send photos of any lifted boards and notches, and we will price the strengthening.