Bonnyrigg · Edinburgh and the Lothians
Floor joist repairs in Bonnyrigg
Houses in Bonnyrigg and across Edinburgh and the Lothians with suspended timber ground floors rely on dry walls and a ventilated void to stay sound. When either fails, rot usually starts at the edges of the room long before anything shows in the middle.
Guide price from£240per joist inc VAT

- Postcodes
- EH18, EH19, EH24
- Population
- about 18,000
- Area
- Edinburgh and the Lothians
- Pricing region
- Scotland
How do local ground conditions affect floor joist repairs in Bonnyrigg?
Bonnyrigg is in Edinburgh and the Lothians and takes in postcode districts EH18, EH19, EH24. About 18,000 people live there. Nearby places we cover include Mayfield (3 miles), Musselburgh (5 miles) and Penicuik (6 miles).
Most of Edinburgh and the Lothians is on firmer ground than the clay belts of the south-east. 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. Typical buildings in Edinburgh and the Lothians: Sandstone tenements and Georgian terraces, miners' rows, bungalows and post-war estates.
Floor joist repairs prices in Bonnyrigg
Guide prices below are for homes in Bonnyrigg, on Scotland 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 – £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
Splicing ends and fitting hangers
Where only the end has rotted, it is cut back to sound timber and a new piece is fixed alongside, bearing on the wall or on a new joist hanger. Missing or under-nailed hangers elsewhere are replaced at the same time. The damp in the wall must be fixed too.
Best for: Rotten joist ends in damp solid walls
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 happens during floor joist repairs, step by step?
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.
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.
What to look for before calling about floor joist repairs
- A musty smell, or fungal strands showing between the boards
- A gap opening up between the skirting board and the floor
- Ceiling cracks below that follow the line of the joists
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 Bonnyrigg
How much will floor joist repairs cost in Bonnyrigg?
Guide prices for floor joist repairs in Bonnyrigg 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 cover Bonnyrigg?
Yes, Bonnyrigg is covered, along with postcode districts EH18, EH19, EH24. We also cover nearby Mayfield and Musselburgh.
Is the ground in Edinburgh and the Lothians prone to subsidence?
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.
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.
Other structural repairs in Bonnyrigg
- Structural surveys and crack monitoring
- Underpinning
- Subsidence repairs
- Boundary and garden wall repairs
- Chimney stack repairs
Floor joist repairs near Bonnyrigg
Send photos of the floor and the outside wall at your Bonnyrigg property for a free initial assessment and a no-obligation written quote.