Roof structure repairs in Croydon

Postcodes: CR0, CR2, CR5, CR7, CR8
Population: about 390,000
Area: Greater London
Pricing region: London

How do local ground conditions affect roof structure repairs in Croydon?

We cover the whole of Croydon, including postcode districts CR0, CR2, CR5, CR7, CR8; about 390,000 people live in the borough. Nearby, we also cover Sutton (5 miles), Caterham (5 miles) and Banstead (6 miles).

Greater London is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.

What to expect when we carry out roof structure repairs

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.
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.

Is it time for roof structure repairs? Common signs

Horizontal cracks in the wall just below the eaves or ceiling line
Top of an outside wall leaning out at eaves level
Daylight through the tiles, or timber that is damp, stained or crumbling

What should you budget for roof structure repairs in Croydon?

These are guide prices for Croydon, using London 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 London rates. Items marked est. are our estimates.
Item	Guide price	Per
Repairing or doubling a rafter	£375 – £750	per rafter
Purlin and strut strengthening	£1,500 – £3,750	per roof
Tying in roof spread (straps and ties)est.	£1,000 – £3,100	per roof

Repair options we may recommend

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

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 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.

Your roof structure repairs questions

How much should I budget for roof structure repairs in Croydon?

Guide prices for roof structure repairs in Croydon start from about £375 per rafter, including VAT, on London rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.

Can you survey a property in Croydon?

Yes. We take enquiries from across Croydon, including CR0, CR2, CR5, CR7, and from nearby places such as Sutton and Caterham. Send photos for a free initial view and we will tell you what happens next.

Why do houses in Greater London crack?

Most of Greater London sits on London Clay, among the most shrinkage-prone ground in the UK, with river gravels along the Thames. Subsidence claims here are among the most frequent in the country, especially after dry summers and near street and garden trees. 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 roof structure repairs need building control?

Usually yes, where the structure is strengthened or altered, or the covering becomes significantly heavier. In England and Wales that falls under Part A, in Scotland it generally needs a building warrant, and in Northern Ireland council building control approves it. We deal with building control where the work needs it.

Related work in Croydon

Roof structure repairs near Croydon

For a guide price on roof structure repairs in Croydon, try the quote tool or send photos of the ridge, the loft and the eaves.