Roof structure repairs in South Yorkshire

Area: South Yorkshire
Pricing region: Yorkshire and the Humber
Ground: Clay in parts
Towns listed: 15

What should you know about the ground under South Yorkshire?

Historic coal workings are recorded beneath parts of South Yorkshire, and a coal mining search is worth checking where movement is unexplained. Across South Yorkshire, most homes are brick and stone terraces, colliery housing, inter-war council estates and post-war semis.

Repair options we may recommend

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

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 to expect when we carry out roof structure repairs

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.
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.
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.

Is it time for roof structure repairs? Common signs

Horizontal cracks in the wall just below the eaves or ceiling line
Ridge line dipping in the middle when seen from the street
Daylight through the tiles, or timber that is damp, stained or crumbling
Struts, collars or ties cut out or missing in the loft

What should you budget for roof structure repairs in South Yorkshire?

These are guide prices for South Yorkshire, using Yorkshire and the Humber rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.

Guide prices inc VAT on Yorkshire and the Humber rates. Items marked est. are our estimates.
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

Roof structure repairs: purlin and struts added, roof spread tied in. Indicative drawing, not to scale.

Do you need approval 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.

Find roof structure repairs in your South Yorkshire town

Your roof structure repairs questions

Why do houses in South Yorkshire crack?

South Yorkshire lies largely on the Coal Measures, with a long history of shallow and deep mining around Barnsley, Rotherham and Doncaster. Sheffield's hillside sites add retaining walls and steep ground to the mix. Historic coal workings are recorded beneath parts of South Yorkshire, 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 roof structure repairs cost in South Yorkshire?

On Yorkshire and the Humber rates, roof structure repairs starts from about £285 per rafter, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.

Why are there cracks just below the eaves?

A horizontal crack just below the eaves, along the front or back wall, is a common sign of roof spread. The rafters push the top of the wall outward and the masonry cracks where it hinges. Corroded wall ties can cause similar cracks, so the cause needs checking.

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.

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.