Craigavon · County Armagh
Floor joist repairs in Craigavon
Houses in Craigavon and across County Armagh 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£220per joist inc VAT
- Postcodes
- BT64, BT65, BT66
- Population
- about 59,000
- Area
- County Armagh
- Pricing region
- Northern Ireland
How do local ground conditions affect floor joist repairs in Craigavon?
We cover Craigavon and its postcode districts BT64, BT65, BT66, part of County Armagh, with a population of roughly 59,000. Nearby, we also cover Portadown (3 miles), Banbridge (8 miles) and Armagh (13 miles).
Most of County Armagh is on firmer ground than the clay belts of the south-east. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across County Armagh: Georgian houses in Armagh, brick terraces in Portadown and Lurgan, and post-war estates.
What to look for before calling about floor joist repairs
- Floor bouncing, or ornaments rattling, when someone walks across
- 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 Craigavon
For Craigavon we use Northern Ireland rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.
| 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 |
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.
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.
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 Craigavon
How much will floor joist repairs cost in Craigavon?
Guide prices for floor joist repairs in Craigavon 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.
Do you cover Craigavon?
Yes, Craigavon is covered, along with postcode districts BT64, BT65, BT66. We also cover nearby Portadown and Banbridge.
Is the ground in County Armagh prone to subsidence?
County Armagh has glacial drumlin till over older rock, with soft ground and peat near Lough Neagh. 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.
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.
Other structural repairs in Craigavon
- Boundary and garden wall repairs
- Underpinning
- Bay window subsidence repairs
- Wall tie replacement
- Bowing wall repairs
Floor joist repairs near Craigavon
If a floor in Craigavon has dropped after plumbing or heating work, send photos of any lifted boards and notches, and we will price the strengthening.