Roofs, chimneys and rainwater
Water gets into buildings from the top. Gutters, flashings and chimney stacks cause more damp in British houses than every other defect combined, and all three are cheap compared with what they ruin.
"End of its serviceable life" is a forecast, not a leak
Surveyors describe expected remaining life, not present failure. Concrete tiles run 40 to 60 years, clay 60 to 100, natural slate 80 to 150. What actually fails first is usually the underfelt, the mortar bedding on ridges and hips, and the flashings. Ask what is specifically defective today before assuming a full re-roof.
The ten-minute loft inspection
Go up on a bright day and look at the underside of the roof. Daylight through the felt, torn valleys, staining running down rafters, damp at the wall plate — that tells you more than any number of photographs of the outside. If the tiles are sound but the felt has perished, you are re-roofing regardless, because the felt cannot be replaced without stripping the covering.
Do everything at height in one visit
Scaffold is a separate trade with its own erection, hire, inspection and dismantling cost, and it stays up for the whole job — £900 to £3,000 on a two-storey house. That is exactly why the chimney repointing, the fascias, the guttering and any rooflights should happen in the same visit as the roof. Doing them separately means paying for access twice.
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Every guide on this topic
How Much Does a Chimney Rebuild Cost in the UK?
One ordinary stack rebuilt above the roof is usually £2,500–£6,000 all in. Why the other figures you see are lower or higher, and when repointing is enough.
Read the guide →-
Roof Spread in a Survey: What It Means and What It Costs to Fix
Roof spread means the roof is pushing the tops of the walls outwards. Here is what causes it, how serious it is, what the fix usually involves and what it costs, from a builder who reads surveys every week.
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How Much Does a New Roof Cost in the UK? (2026)
A re-roof quote swings wildly because it's priced by area, material and everything else that happens to be up on the scaffold at the same time. Here's what each part actually costs.
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Follow the Water: What Your Gutters and Downpipes Are Telling You About the House
Before you spend thousands on damp treatment, look outside. Gutters, downpipes and drainage cause more damp in UK homes than rising damp does. Here's what a builder looks for, and what fixing it costs.
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‘Roof Covering Is Aged’: What It Means in a RICS Survey and How to Cost It
Your RICS survey says the roof covering is ‘aged’ or ‘approaching the end of its serviceable life’ — how urgent is that really, and what should you budget?
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Chimney Stack and Flashing Issues in a RICS Survey: What to Check and What It Costs
Chimney stack repointing and flashing failure are among the most common RICS survey findings on period homes. Here's what they mean and realistic repair costs.
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Flat Roof RICS Survey Findings: What They Mean and What Repairs Cost
Your RICS survey flags the flat roof as ‘nearing the end of its serviceable life’ — what does that actually mean? A plain-English guide to flat roof survey findings and realistic repair costs.
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