Full re-roofs, repairs, flat roofs, slate and tile, lead work and chimneys. Free site visits, written quote.
London roofs take a beating — driving rain, frost, heat in summer, and decades of patch-repairs from previous owners. TrustBuilt Projects handles the full range of roofing work from one-off slipped tile repairs through to complete re-roofs, flat roof replacements, lead valleys, chimney rebuilds and dormer construction. Most of what we do is on pitched roofs — natural slate and clay or concrete tiles — and on flat roofs we install single-ply membrane (GRP, EPDM rubber, and felt) depending on what suits the build-up and budget. Your roof is handled by our roofing team and managed end to end by us, so the crew you meet on the site visit is the crew that's up there on the day, held to the same standard throughout. We work to British Standard BS 5534 for pitched roofs and BS 6229 for flat roofs, and on listed or conservation-area properties we match existing materials and detailing carefully — Welsh slate, hand-made clay tiles, traditional lead work and so on. Scaffolding, edge protection and roof access are all included; we don't ask you to source separate scaffold contractors.
We cover every London borough within 20 miles of central — period Victorian and Edwardian terraces in Islington, Hackney and Camberwell, larger detached homes in Hampstead, Dulwich and Wimbledon, and post-war semis throughout the suburbs. Site visits are free, and you get a written quote afterwards so you can see exactly what's being replaced and why. No high-pressure sales, no quote over the phone before we've been on a ladder.
We visit your property, assess the work needed, and listen to your priorities.
Itemised quote in writing within 48 hours of the visit.
Our team carries out the work. Daily progress updates if you want them.
Final walkthrough, snagging, full clean. We leave your home spotless.
A full re-roof on an average London terrace runs roughly £8,000 to £18,000 in concrete tile, or £14,000 to £30,000+ in natural slate. Larger or more complex roofs (hipped, multiple valleys, chimneys) push higher. Flat roof replacements typically sit between £2,500 and £8,000 depending on area and system. We provide a written quote after the free site visit.
A standard London terrace re-roof takes around 5 to 10 working days from scaffold up to scaffold down, weather permitting. Flat roof replacements are usually 2 to 4 days. Larger or more cut-up roofs with chimneys, dormers and valleys can stretch to 3 weeks. We work around the British weather and won't open up a roof we can't make watertight by end of day.
Replacing a roof on a like-for-like basis is normally permitted development and doesn't need planning permission. You will need permission if you're changing the roof shape, adding dormers, or working on a listed building or a property in a conservation area where materials are controlled. We'll flag any of this at the site visit.
It depends on what we find. If the underlying battens, felt and timbers are sound and only a section of tiles or slates has failed, a localised repair is the sensible call. If we find sagging rafters, perished sarking felt or widespread nail fatigue, patching just kicks the problem down the road. We'll be straight with you about which it is.
Yes — flat roofs over rear extensions, dormers and outbuildings are a big chunk of our work. We install GRP fibreglass, EPDM rubber and torch-on felt systems depending on what suits the build-up, the falls and the budget. All come with proper falls, trim detailing and outlets to current spec.
Almost always worth doing while the scaffold's up. Replacing fascias, soffits and guttering after the scaffold's down means hiring access again. We'll quote the roof and the trim work separately so you can decide what's in scope, but it's usually 10 to 20% cheaper to do everything in one visit.
Repointing, rebuilding above the roof line, replacing lead flashings and re-flaunching pots are all common while we're up there. If a chimney is leaning or the flaunching is breaking up, doing it as part of the re-roof is much cheaper than coming back to it later.
If the roof is going anyway, it's the right moment to consider converting the loft below.
Learn more →Sagging rafters, spreading walls and chimney movement — handled by the same in-house team.
Learn more →Natural slate, hand-made clay tiles and traditional lead work to match listed and period homes.
Learn more →These are typical London market ranges for 2026, not a fixed price list, so treat them as a guide and ask us for a survey-based quote on your roof.
Figures typically include stripping the old covering, new felt/membrane and battens, materials, labour and standard scaffolding. They usually exclude structural timber repairs, full chimney rebuilds, VAT, scaffold permits in controlled parking zones (£150–£600), and any insulation or building-control upgrades.
Larger roof areas and steeper pitches need more materials, more labour and longer scaffolding hire, all of which push the total cost up.
Concrete tile is cheapest; clay tile, natural Welsh slate and reclaimed period slate cost far more per m² and take longer to lay.
Tight terraces, three-storey London townhouses and restricted access raise scaffold costs and may need a council permit in controlled parking zones.
Rotten rafters, sagging decks or failed purlins are only found once stripped back and add cost not in the headline quote.
Each chimney stack, valley, skylight and lead detail adds skilled labour and lead flashing, increasing both price and the days on site.
Conservation areas and listed buildings demand matching slate and approvals; inner-London labour also runs roughly 20–30% above the UK average.
Want an exact figure for your project? Book a free site visit → and we’ll send a written quote.