Northallerton · North Yorkshire
Roof structure repairs in Northallerton
A dipping ridge or a wavy roof slope in Northallerton is usually a timber problem, not a tile problem. We look at the rafters, purlins, struts and ties from the loft, and at the wall heads from outside, before suggesting how to strengthen it.
Guide price from£285per rafter inc VAT

- Postcodes
- DL6, DL7
- Population
- about 17,000
- Area
- North Yorkshire
- Pricing region
- Yorkshire and the Humber
What is the ground like in North Yorkshire?
We cover Northallerton and its postcode districts DL6, DL7, part of North Yorkshire, with a population of roughly 17,000. If you are just outside Northallerton, we also cover Yarm (12 miles), Darlington (14 miles) and Thornaby-on-Tees (14 miles).
North Yorkshire has a mix of ground, with clay in some places and firmer rock in others. Parts of North Yorkshire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. What you mostly find across North Yorkshire: stone cottages, Georgian and Victorian houses in York and Harrogate, and brick terraces on Teesside.
Which repair method suits a home in Northallerton?
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
Wall plate replacement
Rotten or crushed wall plates are replaced in short lengths while the rafters above are propped, and bedded on the wall in mortar. The plate is then strapped down to the masonry. It is often combined with rafter foot splices along the same run.
Best for: Rot along the eaves where rafters bear on the wall
What happens when we carry out roof structure repairs in Northallerton?
Loft and outside survey
On site we check rafter sizes and spacing, purlins, struts, ties and wall plates, look for rot and past alterations, and measure any lean at the wall head. The covering is noted too, because its weight affects the repair.
Engineer’s design where needed
Where purlins, struts or ties must be redesigned, or the roof carries a heavier covering, an independent chartered structural engineer is appointed to specify the work. We can arrange this, and their design sets the sizes and fixings.
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.
Signs you may need roof structure repairs
- Horizontal cracks in the wall just below the eaves or ceiling line
- Ridge line dipping in the middle when seen from the street
- Struts, collars or ties cut out or missing in the loft
How much will roof structure repairs cost in Northallerton?
Guide prices below are for homes in Northallerton, on Yorkshire and the Humber 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 | £285 – £570 | per rafter |
| Purlin and strut strengthening | £1,150 – £2,850 | per roof |
| Tying in roof spread (straps and ties)est. | £760 – £2,400 | per roof |
Rules for roof structure repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Roof structure repairs in Northallerton: questions and answers
How much will roof structure repairs cost in Northallerton?
Guide prices for roof structure repairs in Northallerton start from about £285 per rafter, including VAT, on Yorkshire and the Humber rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Northallerton?
Yes, Northallerton is covered, along with postcode districts DL6, DL7. We also cover nearby Yarm and Darlington.
Is the ground in North Yorkshire prone to subsidence?
North Yorkshire ranges from limestone dales and moors to clays and glacial deposits in the Vale of York, with the Selby coalfield in the south and ironstone workings in Cleveland. Teesside has areas of soft and made ground. Only an investigation can say why a particular building has moved.
Can heavy concrete tiles damage a roof?
Yes, if the frame was designed for lighter slate or tiles and was not strengthened. The extra weight makes rafters and purlins sag and can bring on roof spread. Before re-roofing in a heavier material, have the structure checked and notify building control.
Can the roof be strengthened without removing the tiles?
In most cases, yes. Doubling rafters, adding struts and fitting ties can all be done from inside the loft with the coverings in place. Tiles usually only come off where timber near the eaves is badly decayed, or the roof is being re-covered anyway.
Other structural repairs in Northallerton
- Bay window subsidence repairs
- Concrete repairs
- Structural crack repairs
- Structural surveys and crack monitoring
- Resin injection ground stabilisation
Roof structure repairs near Northallerton
Every rafter, purlin and tie on the job in Northallerton is listed in the written quote, which becomes a fixed price in writing once the repair is specified.