Mayfield · Edinburgh and the Lothians
Floor joist repairs in Mayfield
Floor joist repairs in Mayfield 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£240per joist inc VAT

- Postcodes
- EH19, EH22, EH23
- Population
- about 14,000
- Area
- Edinburgh and the Lothians
- Pricing region
- Scotland
What should you know about the ground under Mayfield?
Mayfield (EH19, EH22, EH23) has around 14,000 residents and sits in Edinburgh and the Lothians. If you are just outside Mayfield, we also cover Bonnyrigg (3 miles), Musselburgh (5 miles) and Tranent (6 miles).
Clay shrinkage is less of a concern in Edinburgh and the Lothians, so other causes such as drains, poor footings or older walls are checked first. Parts of Edinburgh and the Lothians lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Edinburgh and the Lothians, most homes are sandstone tenements and Georgian terraces, miners' rows, bungalows and post-war estates.
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.
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.
What to look for before calling about floor joist repairs
- A gap opening up between the skirting board and the floor
- A musty smell, or fungal strands showing between the boards
- Floor dipping towards an outside wall or in the middle of the room
Floor joist repairs prices in Mayfield
These are guide prices for Mayfield, using Scotland 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 |
How we usually approach floor joist repairs
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
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
Rules for floor joist repairs in Scotland
In Scotland, small repairs often do not need a building warrant, but structural alterations and strengthening generally do. Check with the council’s building standards service if unsure; there is no Party Wall Act in Scotland.
Questions about floor joist repairs in Mayfield
What is the price of floor joist repairs in Mayfield?
Guide prices for floor joist repairs in Mayfield start from about £240 per joist, including VAT, on Scotland 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 Mayfield?
Yes. We take enquiries from across Mayfield, including EH19, EH22, EH23, and from nearby places such as Bonnyrigg and Musselburgh. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Mayfield cause cracking?
Edinburgh is volcanic and sedimentary rock with glacial till, while the Midlothian and East Lothian coalfields and oil-shale workings in West Lothian have left recorded mine workings and bings. Only an investigation can say why a particular building has moved.
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.
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 Mayfield
- Chimney stack repairs
- Structural crack repairs
- Extension pulling away repairs
- Roof structure repairs
- Crack stitching
Floor joist repairs near Mayfield
Get a free initial assessment of a sagging floor in Mayfield from your photos or a call, before you commit to anything.