“Can this be repaired, or does the whole roof need replacing?” That’s the question behind almost every call we get in Putney. It’s a fair one to ask before committing to either option. The honest answer depends on a handful of specific factors, not a general rule about the roof’s age.
Start with the extent of the problem
A single leak, a handful of slipped tiles, or one section of damaged flashing is almost always worth repairing. This applies as long as the rest of the covering is sound. Repairs are quicker, cheaper, and don’t disturb a roof that’s otherwise doing its job. The calculation changes once the problem is widespread rather than isolated. Multiple leaks in different areas, or tiles failing across the whole slope, point to a covering that’s failing generally. That’s not one fault that happens to need fixing.
Consider how many repairs it’s already had
A roof that’s had two or three separate repairs in the last few years is telling you something. Each repair might have been the right call at the time. But a pattern of repeated fixes usually means the covering has reached the point where further repairs treat symptoms, not the cause. At that stage, the sensible move is often to stop spending on repairs and put that money towards a full re-cover instead.
Check what’s happening underneath, not just on the surface
Tiles that look fine from the ground can still sit on rotten battens or timber weakened by long-term damp. Homeowners can’t easily assess this part themselves. That’s exactly why a proper inspection matters more than judging by appearance alone — ideally with someone getting up onto the roof, not just looking from a ladder. If the timber structure needs significant work, that’s usually the deciding factor in favour of replacement. You’d need to strip the covering to fix the timbers regardless.
Weigh the age of the roof against realistic remaining life
Roofing materials have a realistic working life. A roof well past that point is a different proposition to one that’s simply had one bad storm. Nobody can confirm your roof has ever had a full re-cover, and it’s now showing multiple problems rather than one? That combination usually tips the decision towards replacement. Repairing a roof near the end of its life tends to become a series of smaller costs that add up to more than one larger one.
Factor in what a repair actually buys you
A repair fixes the specific fault, but it doesn’t reset the clock on the rest of the roof. If your roof has fifteen years of realistic life left and one section needs work, a repair genuinely makes sense — you’re not paying to replace tiles with years of service still in them. If the roof is closer to the end of that life already, a repair that only buys two or three more years is a less attractive trade against a replacement that resets the whole roof’s clock.
Get a straight answer, not a sales pitch
The most useful thing a roofer can do on an inspection is tell you honestly which category your roof falls into, even when a repair is the cheaper answer for them to sell. We’ll always recommend a repair when a repair is genuinely the right call. A full new roof isn’t a better outcome for you just because it’s a bigger job for us. See our guide to the 7 signs your roof needs replacing for more on spotting when a roof has crossed that line.
In Putney, Wandsworth, or Chelsea? Get in touch for a free inspection and a clear recommendation, repair or replace, whichever genuinely fits your roof.