Ballymoney · County Antrim
Roof structure repairs in Ballymoney
Many older roofs, in Ballymoney and across County Antrim alike, were built with slim purlins and few ties. A little historic movement is normal, so we check whether the roof is still moving before recommending how far the strengthening needs to go.
Guide price from£265per rafter inc VAT
- Postcodes
- BT53
- Population
- about 10,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
What should you know about the ground under Ballymoney?
We cover Ballymoney and its postcode districts BT53, part of County Antrim, with a population of roughly 10,000. We also take enquiries from nearby Coleraine (7 miles), Ballymena (17 miles) and Limavady (17 miles).
Shrinkable clay is less common in County Antrim than in south-east England. Historic brine and salt working has caused ground movement in parts of County Antrim in the past. Typical buildings in County Antrim: Red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.
From first photo to finished repair
Send photos
Photograph the roof from across the street, both slopes if you can, and the loft timbers with a torch. Include the eaves and any cracks just below them. From these we can usually tell sag from spread and whether an engineer is needed.
Written quote
You receive a no-obligation written quote listing each timber repair, any ties or straps, propping, scaffolding and making good. Once the repair is specified, the figure becomes a fixed price in writing.
Prop, strengthen and tie
The roof is propped where members are being changed, then rafters, purlins, struts and ties are repaired or added as specified. Coverings disturbed by the work are relaid, and building control inspects where the work needs it.
Symptoms that point to roof structure repairs
- Daylight through the tiles, or timber that is damp, stained or crumbling
- Struts, collars or ties cut out or missing in the loft
- Roof slope looking hollow or wavy between the ridge and the gutter
Guide prices for roof structure repairs in Ballymoney
Guide prices below are for homes in Ballymoney, on Northern Ireland rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Repairing or doubling a rafter | £265 – £530 | per rafter |
| Purlin and strut strengthening | £1,050 – £2,650 | per roof |
| Tying in roof spread (straps and ties)est. | £705 – £2,200 | per roof |
Methods for roof structure repairs
Repairing or doubling rafters
Cracked, sagging or rotten rafters are strengthened by fixing a new timber alongside, often called doubling, and rotten rafter feet are cut back and spliced. The work is usually done from inside the loft with the tiles left in place, unless the covering is coming off anyway.
Best for: Individual rafters that have cracked, sagged or rotted at the feet
Purlin and strut strengthening
Undersized purlins are strengthened with extra timber or replaced, and new struts are taken down to a load-bearing wall. Where there is no suitable wall, an engineer designs the load path. Temporary props hold the roof while members are changed.
Best for: Sagging slopes, slim purlins and struts removed from the loft
Rules for roof structure repairs in Northern Ireland
In Northern Ireland, the Building Regulations (Northern Ireland) 2012 apply and the council’s building control service approves structural work such as underpinning; minor like-for-like repairs usually need no approval. The Party Wall Act does not apply in Northern Ireland, so work to shared walls depends on deeds and agreement with neighbours.
Frequently asked questions
How much will roof structure repairs cost in Ballymoney?
Guide prices for roof structure repairs in Ballymoney start from about £265 per rafter, 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 Ballymoney?
We do. Ballymoney and the surrounding area are covered, including nearby Coleraine and Ballymena. A free initial assessment from your photos is the first step.
Is the ground in County Antrim prone to subsidence?
County Antrim is largely basalt over chalk, with soft estuarine 'sleech' along Belfast Lough that is notorious for settlement. Historic salt mining is recorded near Carrickfergus. Only an investigation can say why a particular building has moved.
Do I need a structural engineer for roof repairs?
For like-for-like repairs to a few rafters, often not. Where purlins, struts or ties are being redesigned, the covering is getting heavier or the walls are being pushed out, you usually do. Where the repair needs an engineer’s design or sign-off, an independent chartered structural engineer is appointed, and we can arrange this.
What is roof spread?
Roof spread is when the feet of the rafters move outward because nothing is tying them together firmly enough. As they spread, the ridge drops and the tops of the walls are pushed out, often with a horizontal crack below the eaves. It is fixed by adding ties, collars or straps, sometimes with rebuilding.
Other structural repairs in Ballymoney
- Structural surveys and crack monitoring
- Bay window subsidence repairs
- Concrete repairs
- Brick arch repairs
- Structural crack repairs
Roof structure repairs near Ballymoney
If struts were removed for a loft room in Ballymoney, send photos of the space and we will price putting a proper load path back.