Bromley · Greater London
Roof structure repairs in Bromley
Roof structure repairs in Bromley are often done entirely from inside the loft, with the tiles left in place. Doubling rafters, adding struts and fitting ties rarely needs the coverings off unless decay at the eaves is severe.
Guide price from£375per rafter inc VAT
- Postcodes
- BR1, BR2, BR4, BR5, BR6
- Population
- about 330,000
- Area
- Greater London
- Pricing region
- London
Is Greater London prone to ground movement?
Bromley is one of the 32 London boroughs, with around 330,000 residents in districts such as BR1, BR2, BR4, BR5, BR6. Neighbouring towns we cover: Swanley (5 miles), Lewisham (5 miles) and Croydon (6 miles).
Shrinkable clay is widespread in Greater London. Ground movement here is more often linked to soils, drains and trees than to mining. Across Greater London, most homes are Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
What should you budget for roof structure repairs in Bromley?
The ranges below reflect typical London costs for roof structure repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| 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
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
Tying in roof spread
New ties, collars or steel straps connect opposite rafters, or fix the rafter feet and wall plate firmly to the ceiling joists, so the outward thrust is resisted. Leaning wall heads are strapped back to the roof, and a badly spread roof may need partly rebuilding first.
Best for: Walls pushed out at eaves level by spreading rafters
What to expect when we carry out roof structure repairs
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.
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
- Top of an outside wall leaning out at eaves level
- Ridge line dipping in the middle when seen from the street
- Horizontal cracks in the wall just below the eaves or ceiling line
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
What is the price of roof structure repairs in Bromley?
Guide prices for roof structure repairs in Bromley 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.
Do you carry out roof structure repairs in Bromley?
We do. Bromley and the surrounding area are covered, including nearby Swanley and Lewisham. A free initial assessment from your photos is the first step.
Does the ground around Bromley cause cracking?
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.
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.
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.
More repairs we carry out in Bromley
- Structural surveys and crack monitoring
- Retaining wall repairs
- Crack stitching
- Structural crack repairs
- Lintel replacement
Roof structure repairs near Bromley
Seen the ridge dip at your Bromley home? Photograph it from across the road, add a few loft shots, and we will tell you what it likely needs.