Roofing advice & FAQs

A well-installed natural slate roof typically lasts 80–100 years or more, while concrete interlocking tiles last around 40–60 years and clay tiles 50–100 years depending on quality. Flat roofs have shorter lifespans: felt (built-up) flat roofs last roughly 10–20 years, EPDM rubber roofs 25–40 years, and GRP fibreglass around 30–40 years. Lifespan is heavily influenced by the quality of the original installation, maintenance, and local weather — the Fenland climate, with its cold winters and driving easterly winds, can accelerate wear on poorly pointed ridges and failing flashings. Regular inspections every few years can add years to any roof's life.

Key signs you need a new roof include cracked, slipped or missing tiles across multiple areas, daylight visible in the loft space, persistent damp patches on interior ceilings, sagging roof decking, or widespread moss and lichen indicating tile degradation. If your roof is over 40 years old and needing frequent repairs, replacement is often more economical than ongoing patching. In the Ely area, crumbling mortar on ridge tiles and failing lead flashings around chimneys are among the most common warning signs we see. A professional inspection will tell you whether repairs can extend the life of the roof or whether full replacement is the right decision.

Repair is the right choice when damage is localised — for example, a handful of slipped slates, a failed flashing, or a cracked ridge tile — and the rest of the roof structure is sound. Replacement makes more sense when the roof is over 40 years old, tiles or slates are failing in large numbers, the battens and felt underlay have deteriorated, or repair costs are approaching 50% or more of a full replacement. A good roofer will give you an honest assessment of both options rather than defaulting to the more expensive job. If you're unsure, ask Ely Roofers for a free roof survey and we'll tell you plainly what the roof needs.

A full roof replacement on an average UK semi-detached house typically costs between £5,000 and £14,000, depending on the size of the roof, the material chosen, and the complexity of the work. Natural slate sits at the higher end (£10,000–£20,000+ for larger roofs), while concrete interlocking tiles are more affordable (£5,000–£9,000 for a typical 3-bedroom semi). Prices around Ely and the Cambridgeshire Fens vary with access, scaffolding requirements, and disposal costs for old materials. Be cautious of quotes significantly below this range — underpriced jobs often cut corners on underlay, battens or fixings.

In most cases, replacing a roof with the same or similar materials is considered permitted development and does not require planning permission. However, if you live in a conservation area — which includes parts of Ely city centre — or your home is a listed building, you will need to apply for planning permission or listed building consent before changing roofing materials, adding roof lights, or altering the roof structure. Ely's historic centre and many villages in the surrounding area have conservation area designations, so it's always worth checking with East Cambridgeshire District Council before work begins. Carrying out unauthorised work on a listed building is a criminal offence.

There is no universal government grant specifically for roof replacement, but several schemes may help eligible homeowners. The Great British Insulation Scheme and ECO4 scheme can fund insulation improvements that involve the roof, for households on certain benefits or with low EPC ratings. Local authorities including East Cambridgeshire District Council occasionally administer Disabled Facilities Grants or home improvement funding for vulnerable residents — it's worth contacting them directly. If your property was damaged by a storm, check your buildings insurance policy first, as storm damage to roofs is typically covered.

A pitched roof has a slope of 15 degrees or more and sheds rainwater quickly by gravity; a flat roof has a very shallow fall (typically 1–5 degrees) and relies on a waterproof membrane rather than overlapping materials. Pitched roofs generally last longer, require less frequent replacement and perform better in the UK's wet climate. Flat roofs are common on extensions, garage roofs and some 1960s–1980s properties; modern materials like EPDM rubber or GRP fibreglass have significantly improved their durability compared to old felt systems. If you have a flat roof that is more than 15 years old, it is worth having it inspected before it fails.

Lead flashing seals the joint between a chimney stack and the surrounding roof tiles; it fails when the lead cracks due to thermal movement, when the mortar pointing deteriorates, or when the lead was poorly dressed in the first place. Failed flashing is one of the most common causes of water ingress in older properties around Ely and is often misidentified as a tile problem. The fix is to rake out the old mortar, re-dress or replace the lead flashing, and re-point using a suitable mortar mix — a job that typically costs £200–£600 depending on the size of the chimney. Avoid temporary fixes using flash band or roofing sealant as a permanent solution; they last only a few years and can mask ongoing damage.

Gutters should be cleared of leaves and debris at least once a year — ideally in late autumn after the leaves have fallen — and inspected for leaking joints, sagging sections or cracks. In areas with overhanging trees, twice-yearly clearing is sensible. Unemptied gutters cause water to back up under roof tiles, rot fascia boards and cause damp in walls — problems we see regularly on properties in the tree-lined streets of Ely. UPVC fascias and soffits need little maintenance beyond an occasional wash, but timber fascias should be repainted every 5–7 years and replaced if they show signs of rot, as they carry the weight of the gutter and support the bottom edge of the roof.

If your roof is leaking, place containers to catch dripping water and move valuables clear of the affected area immediately — do not ignore a leak hoping it will stop, as water travels and the source is rarely directly above where it appears inside. If safe to do so, take photographs from outside to help identify the likely entry point, but do not attempt to climb onto the roof yourself. Call a roofer who offers emergency call-outs; Ely Roofers can attend urgent jobs across Ely and the surrounding villages. In the meantime, if the leak is severe and causing structural concern, contact your buildings insurer to log a claim.

Look for a roofer who is registered with a recognised trade body such as the National Federation of Roofing Contractors (NFRC) or TrustMark, carries public liability insurance, and can provide references from local jobs. Be wary of anyone who knocks on your door unsolicited claiming to have spotted problems with your roof, or who demands a large cash deposit upfront. Ask for a written, itemised quote — not just a verbal price — and check that it specifies the materials being used, the scope of work, and how waste disposal is handled. A reputable local roofer will be happy to explain what they've found and why the work is needed before asking you to commit to anything.