Glasgow · Scotland
Floor joist repairs in Glasgow
Floor joist repairs in Glasgow starts with the ground. Most of Glasgow is on firmer ground than the clay belts of the south-east, and the buildings here are mostly red and blond sandstone tenements, so the repair has to suit both.
Guide price from£240per joist inc VAT
- Area
- Glasgow
- Pricing region
- Scotland
- Ground
- Mostly firmer ground
- Towns listed
- 0
What should you know about the ground under Glasgow?
Glasgow is underlain by the Central Coalfield, with shallow historic coal and ironstone workings recorded across much of the city, beneath glacial till and river deposits along the Clyde.
Historic coal workings are recorded beneath parts of Glasgow, and a coal mining search is worth checking where movement is unexplained. Across Glasgow, most homes are red and blond sandstone tenements, Victorian villas, inter-war cottage flats and post-war estates.
Signs you may need floor joist repairs
- Floor bouncing, or ornaments rattling, when someone walks across
- A gap opening up between the skirting board and the floor
- Soft or spongy boards near outside walls, hearths or the bathroom
- A musty smell, or fungal strands showing between the boards
How much will floor joist repairs cost in Glasgow?
Prices in Glasgow are worked out on Scotland 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 | £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 Glasgow?
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
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
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 when we carry out floor joist repairs in Glasgow?
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.
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.
Do you need approval 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.
Floor joist repairs in Glasgow: questions and answers
Why do houses in Glasgow crack?
Glasgow is underlain by the Central Coalfield, with shallow historic coal and ironstone workings recorded across much of the city, beneath glacial till and river deposits along the Clyde. Historic coal workings are recorded beneath parts of Glasgow, and a coal mining search is worth checking where movement is unexplained. Only an investigation on site can say why a particular building has moved.
How much will floor joist repairs cost in Glasgow?
On Scotland rates, floor joist repairs starts from about £240 per joist, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.
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.
Can floor joists be repaired without taking up the whole floor?
Yes, in most cases only the boards over the affected joists need lifting, and three or four boards are often enough to sister a joist or splice a rotten end. Widespread rot is the exception, because the whole floor must come up to remove the decay.