An honest decision framework for Salisbury homeowners — when a repair is the right spend, when it’s money wasted, and when replacement is an oversell. No pressure either way.
Tell us the job in 30 seconds. No pushy sales, no call-out fee.
📞 Call Now: 0172 223 9611Repair your Salisbury roof if the covering is sound and the fault is localised; replace it once failures recur across a slope, the fixings have gone, or repair costs approach 30–40% of replacement on a roof over 30 years old. Book a free inspection for a written verdict: 0172 223 9611.
The question isn't really "is my roof damaged?" — almost any roof can be patched. It's whether patching solves the problem or just postpones it. Three factors decide it: the age of the roof, whether the failure is localised or spreading, and the cost of the repair relative to a full replacement over the years you'd get back.
Start with age against material. A concrete-tile roof on a 1965 Salisbury estate house is at 60 years — the end of its expected span — so pouring money into repairs rarely pays. A Welsh slate roof on a Victorian terrace off Fisherton can be structurally sound at 100 years if the slates themselves are good and only the fixings or lead have failed. Same age gap, opposite verdict.
When replacement is the answer: recurring slipped tiles across a whole slope, widespread nail sickness, sagging or failed timbers, or a repair bill approaching 30–40% of a re-roof on a roof already past 30 years. When repair is the answer: a sound covering with a localised fault — a failed valley, cracked flashing, a handful of slipped tiles, or a chimney leak. When replacement is an oversell: a good slate or clay roof where only the lead and flashings have gone. Renewing those is a fraction of a re-roof, and any roofer pushing a full strip on a sound covering is worth a second opinion.
Salisbury's housing splits neatly along this decision. The post-war concrete-tile estates — Bemerton Heath, Bishopdown, the Friary — are the classic "replace" case: built in the 1960s–70s, they're reaching end of life together, and once nail sickness takes a slope, repairs become a yearly tax. The economics almost always favour a managed re-roof over endless patching.
The Victorian and Georgian stock — the terraces off Fisherton Street and Milford, the period properties in the city centre and the Close — is the classic "repair" case. These clay and slate roofs can have decades left in the covering itself; what fails is the lead, the flaunching and the fixings. Renewing those honestly, in the right materials, is far better value than a full strip, and on listed and conservation-area properties it's also what the rules require.
The valley-floor damp that defines Salisbury — five rivers, shaded north-facing roofs in Harnham and Britford — shortens roof life at the margins and makes the age-versus-condition judgement finer. That's exactly where an independent inspection earns its fee: a written verdict on remaining life beats a guess from the ground every time.
The single most useful figure is cost-per-remaining-year: a £900 repair that buys three more years costs £300 a year, while a £8,000 re-roof that lasts 50 costs £160 a year. Framed that way, the right answer is usually obvious once you know the roof’s true condition — which is exactly what a survey establishes.
| Situation | Typical verdict | Why |
|---|---|---|
| Few slipped tiles, sound roof | Repair | Localised, cheap, covering has years left |
| Failed lead valley, good slate | Repair (lead only) | Slate sound; renew lead not covering |
| Nail sickness across a slope | Replace (slope or roof) | Fixings gone; patching recurs |
| Repair >30–40% of re-roof, age 30+ | Replace | Better cost per remaining year |
| One failed slope, others sound | Partial re-roof | Targeted value |
Worked example: A 1970s Bishopdown semi with tiles slipping on both rear slopes had been repaired three times in four years (~£1,300 total). A full concrete-tile re-roof at ~£8,000 with a 10-year guarantee ended the cycle — the cost-per-remaining-year strongly favoured replacement.
No deposit on repairs under £500; staged payments on re-roofs with nothing up front before materials are on site. Re-roofing usually attracts 5% VAT.
Repairs carry a written workmanship guarantee and we return if a repair we've done fails. Full and partial re-roofs carry a 10-year written workmanship guarantee, transferable if you sell, alongside manufacturer warranties on the tiles or slates. Storm and impact damage is an insurance matter, not a guarantee one — and we document it for your claim.
A proper repair-or-replace verdict comes from the roof, not a hunch from the pavement. When we survey a Salisbury property we tap and examine the fixings across each slope to gauge nail sickness, check the covering for cracked, delaminating or porous tiles and slates, inspect the lead valleys, soakers and flashings for fatigue, and — where access allows — look inside the roof space for daylight, damp, failed underlay and timber decay. For steep or fragile roofs we use drone survey to see every detail safely.
What you get back is a written verdict: the condition of each element, an estimate of remaining life, and the repair-versus-replace economics laid out plainly — including a partial re-roof option where one slope has failed but the others are sound. The survey fee is credited in full against any work you book, so an inspection is never a wasted spend: either it confirms your roof is fine, or it comes off the job.
Above all, the verdict is honest both ways. We’ll tell you when a cheap repair genuinely solves it and a re-roof would be a waste of your money, and we’ll tell you when patching a dying roof is throwing good money after bad. That candour — backed by photographs and a written report — is what an independent assessment is for.
Repair if the covering is sound and the problem is localised — a few slipped tiles, a failed flashing, one worn valley. Replace once failures are recurring across a slope, the fixings have gone (nail sickness), or repair costs approach 30–40% of replacement on a roof over 30 years old.
A common rule of thumb: if a repair costs more than about 30–40% of a full replacement and the roof is already past 30 years old, replacement usually gives better value per remaining year. Below that, and on a younger roof, targeted repair is the sensible spend.
Concrete tiles typically 40–60 years, clay 60–100+, natural slate 80–100+, felt flat roofs 15–20, EPDM 30–50. Salisbury's damp valley aspect and exposed higher ground can shorten these at the margins, especially on north-facing and shaded roofs.
Usually yes. When the galvanised nails holding the tiles have rusted through across a slope — common on Salisbury's 1960s–70s estates — patching individual tiles just delays the inevitable. A re-roof solves it once.
When the covering is sound and only the lead, flashings or a single valley have failed. On a Victorian slate roof off Fisherton where the slates are good, renewing the lead and re-fixing slipped slates is the honest fix — not a full strip. A good roofer says so.
Sometimes. If one slope has failed but the others are sound, re-covering just that slope can be good value. We'll tell you honestly whether a partial or full re-roof is the right call for your specific roof.
Book an independent inspection. We assess the covering, fixings, timbers and lead, then give a written verdict on remaining life and the repair-versus-replace economics — with the survey fee credited against any work you book.
Book a free inspection and we'll tell you straight — repair or replace — with a written report and the fee credited against any work.
0172 223 9611