Chorley · Lancashire
Roof structure repairs in Chorley
Roofs in Chorley that were re-covered with heavier concrete tiles, or had struts cut out for a loft room, often start to sag years later. Spotting which change caused the movement is the first step to a repair that holds.
Guide price from£290per rafter inc VAT
- Postcodes
- PR6, PR7
- Population
- about 34,000
- Area
- Lancashire
- Pricing region
- North West
What should you know about the ground under Chorley?
Chorley (PR6, PR7) has around 34,000 residents and sits in Lancashire. Nearby, we also cover Horwich (4 miles), Leyland (4 miles) and Darwen (7 miles).
Parts of Lancashire have clay that can shrink near trees in dry spells. Parts of Lancashire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Lancashire, most homes are stone and brick mill terraces, seaside villas in Blackpool and Lytham, and inter-war and post-war semis.
How we usually approach roof structure repairs
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 during roof structure repairs, step by step?
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.
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.
What to look for before calling about roof structure repairs
- Roof slope looking hollow or wavy between the ridge and the gutter
- Top of an outside wall leaning out at eaves level
- Daylight through the tiles, or timber that is damp, stained or crumbling
Roof structure repairs prices in Chorley
For Chorley we use North West 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 |
|---|---|---|
| Repairing or doubling a rafter | £290 – £575 | per rafter |
| Purlin and strut strengthening | £1,150 – £2,900 | per roof |
| Tying in roof spread (straps and ties)est. | £770 – £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.
Questions about roof structure repairs in Chorley
What is the price of roof structure repairs in Chorley?
Guide prices for roof structure repairs in Chorley start from about £290 per rafter, including VAT, on North West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you carry out roof structure repairs in Chorley?
Yes, Chorley is covered, along with postcode districts PR6, PR7. We also cover nearby Horwich and Leyland.
Does the ground around Chorley cause cracking?
Lancashire is mostly glacial till over sandstone and mudstone, with the Burnley and Accrington coalfield in the east and soft coastal and estuarine ground on the Fylde. Old mill and mine sites leave made ground in many towns. Only an investigation can say why a particular building has moved.
Is a sagging roof ridge dangerous?
A slight, even dip in an old roof is often historic movement that stopped long ago. A sag that is getting worse, cracking timbers, walls pushing out at the eaves or recently removed struts should be checked soon. Avoid storing heavy items in the loft until then.
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.
More repairs we carry out in Chorley
- Structural crack repairs
- Structural surveys and crack monitoring
- Wall tie replacement
- Boundary and garden wall repairs
- Bay window subsidence repairs
Roof structure repairs near Chorley
Seen the ridge dip at your Chorley home? Photograph it from across the road, add a few loft shots, and we will tell you what it likely needs.