Norwich Roofers helps homeowners in Horsford decide whether repair or full replacement is the right answer - and installs new roofs when the time genuinely comes.
When a roof starts causing problems - a leak, missing tiles, damp patches on a ceiling - the first question is almost always the same: do I repair it, or do I replace it? There is no single rule that applies to every roof, but there are clear indicators that point one way or the other. Getting this decision right could save you several thousand pounds, or it could save you from spending money on repairs that only delay the inevitable.
We install new roofs in Horsford and across the Norwich area, but we will always tell you honestly when repair is the better answer. A repair that buys another ten good years is worth doing. A repair that buys two years and leaves you facing the same conversation again is not.
A roof that is structurally sound, with timber in good condition and the majority of tiles or slates still performing well, is usually worth repairing rather than replacing. Isolated failures do not mean the whole roof has failed. Common repairable problems include:
If the underlying structure is sound and the problem is localised, targeted repair is nearly always the more economical choice. A good roofer will strip back to confirm what they are dealing with before quoting for repair work.
There are situations where spending money on repairs is throwing good money after bad. Replacement becomes the sensible option when one or more of the following applies.
Concrete interlocking tiles typically last 40 to 60 years before they begin to deteriorate. Natural slate can last considerably longer if it was good quality to begin with. Old plain clay tiles vary enormously. If a roof is approaching or past these ages and repairs are becoming more frequent, a full replacement makes better financial sense than repeated patch work.
Older roofs were often laid with a bituminous felt underlay that becomes brittle and splits after 25 to 40 years. Once the underlay has failed, wind-driven rain can penetrate even if the tiles above it look fine. You cannot repair an underlay without stripping the tiles off - at which point the cost of a repair versus a full re-roof narrows considerably. If you are paying to strip a roof, it often makes sense to replace everything while it is open.
Concrete tiles can delaminate as they age - the surface layers separate and the tile becomes porous or breaks apart. When this affects a large proportion of the tiles rather than a handful, patching is not practical. The same applies to slates that are nail-sick (where the fixing nails have corroded and tiles are held only by gravity and the ones around them).
If the same section of roof has been repaired two or three times in recent years and is still causing problems, the underlying issue is not being resolved. This is often a sign of a structural problem - poor falls on a flat section, inadequate fixings, or a failing deck - rather than a surface material failure.
When timbers are found to be rotten or significantly weakened, repair of the surface covering alone is not enough. Structural work changes the economics entirely - you may need to strip the roof anyway to carry out the timber repairs, which removes the cost advantage of patching.
Sometimes the answer is a partial replacement rather than either a simple repair or a full strip. A hipped roof with a failing section on one slope, for example, might justify stripping and re-roofing that slope alone while leaving the others. This depends on the age and condition of the tiles, whether matching materials are available, and whether the work can be phased sensibly.
Any contractor who inspects your roof properly should be able to explain what they found, what the options are and what each will cost - not just jump straight to the most expensive outcome.
When replacement is the right decision, the work follows a clear sequence. Scaffold goes up first - edge protection is not optional for any full re-roof. The old tiles or slates are stripped and sorted; some may be suitable for reuse if reclaimed materials are acceptable to you. The timber is inspected before any covering goes back on.
New batten and underlay are fixed, then the tiles or slates are laid from eaves to ridge. Ridge and hip tiles are bedded and pointed, or dry-fixed depending on the system. Valleys and abutments are flashed in lead, and the guttering is checked or replaced at the same time.
A pitched roof on an average semi-detached house using concrete interlocking tiles typically costs between £5,000 and £9,000. Natural slate costs more - broadly £8,000 to £15,000 for a similarly sized house. These figures depend on complexity, size and access.
On flat roofs, the repair-versus-replace question is equally important. A single split or blister in a felt roof can be cut out and patched. But if the felt is generally hardened and cracking, if there are multiple repairs already on it, or if the deck beneath has softened from years of trapped moisture, patch repairs will not hold for long.
EPDM rubber membranes are now widely used for flat roof replacements. A single bonded sheet with minimal seams is more reliable than traditional multi-layer felt in most situations. A flat roof replacement costs roughly £70 to £120 per square metre depending on size, access and which system is used.
We carry out flat roof replacements on extensions, garages, outbuildings and larger flat-roofed sections of houses in Horsford and across Norwich.
Whether you are repairing or replacing, it is worth considering ancillary work at the same time. A rooflight that is near the end of its life, or guttering that is sagging and cracked, costs significantly less to sort while scaffold is already in place. Once the access is gone, you are paying for it again.
If you are unsure whether your roof needs repair or replacement, the starting point is a proper inspection - not a quote based on a quick look from the ground. Call us to arrange a roof survey in Horsford and we will give you a straight answer about what we find and what we recommend, with reasons.
No obligation · We usually respond within 2 hours
Storm damage, active leak, damaged ridge - we aim to be on-site within 24 hours.
