Strabane · County Tyrone
Floor joist repairs in Strabane
Whether it is one soft patch by the bathroom or a whole room dropping towards the wall, floor joist repairs in Strabane are priced only after the timber has been seen. Rot, notches and failed supports each need a different fix, and the quote says which.
Guide price from£220per joist inc VAT

- Postcodes
- BT82
- Population
- about 14,000
- Area
- County Tyrone
- Pricing region
- Northern Ireland
What should you know about the ground under Strabane?
Strabane (BT82) has around 14,000 residents and sits in County Tyrone. Nearby places we cover include Derry (14 miles) and Omagh (17 miles).
Clay shrinkage is less of a concern in County Tyrone, so other causes such as drains, poor footings or older walls are checked first. Parts of County Tyrone lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Typical buildings in County Tyrone: Market-town terraces, rural houses and post-war estates.
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
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
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.
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.
What to look for before calling about floor joist repairs
- A musty smell, or fungal strands showing between the boards
- Floor dipping towards an outside wall or in the middle of the room
- Floor bouncing, or ornaments rattling, when someone walks across
Floor joist repairs prices in Strabane
These are guide prices for Strabane, using Northern Ireland 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 | £220 – £350 | per joist |
| Whole room of joists and boards | £1,750 – £5,300 | per room |
| Sleeper wall rebuild and ventilationest. | £350 – £1,300 | per room |
Rules for floor joist repairs in Northern Ireland
In Northern Ireland, minor repairs usually need no approval, but structural work comes under the Building Regulations (Northern Ireland) 2012 and council building control. There is no Party Wall Act in Northern Ireland.
Questions about floor joist repairs in Strabane
How much should I budget for floor joist repairs in Strabane?
Guide prices for floor joist repairs in Strabane start from about £220 per joist, including VAT, on Northern Ireland 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 Strabane?
Yes. We take enquiries from across Strabane, including BT82, and from nearby places such as Derry and Omagh. Send photos for a free initial view and we will tell you what happens next.
Why do houses in County Tyrone crack?
Tyrone has glacial till over varied rock, with a small historic coalfield around Coalisland near Dungannon. Only an investigation can say why a particular building has moved.
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.
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.
Related work in Strabane
- Bay window subsidence repairs
- Resin injection ground stabilisation
- Roof structure repairs
- Mining subsidence repairs
- Brick arch repairs
Floor joist repairs near Strabane
For a guide price on floor joist repairs in Strabane, use the quote tool or send photos of the dip, any soft boards and the air bricks.