It is one of the first questions people ask when they buy a house or spot a stain on the ceiling. The honest answer is that it depends heavily on the material, the fitting and the weather it faces, and here in Bridgend our roofs take a proper battering from wind and rain off the Bristol Channel.
Different materials age very differently. A natural Welsh slate roof, properly laid, can genuinely outlast the people living under it, while a cheap felt flat roof might need doing again within a decade.
These are realistic ranges for South Wales homes, assuming reasonable maintenance and no major storm damage along the way.
Lifespan figures assume a settled climate, and ours is anything but. Driving rain, salt-laden coastal winds and the freeze and thaw of a cold snap all speed up wear, particularly on the exposed western and southern elevations.
Wind is usually the bigger enemy than age. A single gale can lift ridge tiles or strip slates from an otherwise sound roof, so a roof that is technically only halfway through its life can still spring a leak overnight.
In our experience the covering itself often has years left when the trouble starts. The weak points are usually the details: cracked mortar around the ridge and hips, corroded flashing where the roof meets a chimney or wall, and worn felt in the valleys.
Fixing these as they arise is far cheaper than a full replacement, and it can add ten or fifteen years to a roof you were told needed doing. A proper inspection tells you which situation you are actually in.
You do not need to climb up to spot most warning signs. A pair of binoculars from the garden and a look around the loft after heavy rain will tell you a great deal.
Very often, yes. If the structure and the majority of the covering are sound, targeted repairs to flashing, ridges or a few slates are usually the sensible and cheaper option.
A visual inspection every couple of years is sensible, plus a quick look after any major storm. Older roofs and exposed coastal properties benefit from a check every year.
Considerably, as a full re-roof involves stripping and replacing the whole covering. Costs vary widely with material, size and access, so it is always worth getting the roof assessed before assuming the worst.
Got a roof job in mind after reading this? Give Paul a call or send a photo, and you will get a straight answer and a free quote.