Question 1

Should I repair or replace my roof?

Accepted Answer

Repair if the failure is local and the fixings and battens are sound. Replace if the roof is losing slates or tiles from several different places at once, because that means the nails or the battens have failed everywhere and patching is renting time. The answer comes from the loft as much as from outside. This is the question that decides whether you spend a few hundred pounds or several thousand, and it has an honest answer that does not depend on who you ask — provided somebody actually looks properly. The test is whether the failure is local or systemic. One slipped slate, one cracked ridge, one failed flashing on a roof that is otherwise sound is a repair, and a good one will last for decades. Slates coming off two or three a year from different slopes, with rust staining under the nail lines, is nail sickness — the original iron nails have corroded and the whole roof is letting go slowly. No amount of individual repairs stops that, because the remaining fixings are the same age and in the same condition. The loft is where the answer usually lives, and it is the part most often skipped. Underlay condition, batten softness, nail corrosion, daylight through the covering. A roof that looks perfectly even from the pavement can have torn brittle felt and battens you can push a thumbnail into, and none of that shows from outside. It matters that the covering itself is rarely the limiting factor. Good Welsh slate outlives its fixings comfortably — on a hundred-year-old roof a large majority of slates typically come off sound and go straight back on. Concrete interlocking tiles from the 1950s and 60s are the same story: the tiles look serviceable while the nails and battens beneath them have gone. That is why 'the tiles look fine' is not evidence that the roof is fine. There is a middle answer that gets overlooked. A roof that is genuinely near the end can often be kept going for a year or two with targeted repairs while you get proper quotes, arrange the money and pick a season. Doing a re-roof in spring rather than in a January panic saves real money, and nail sickness is a slow failure that gives you that time. Anybody treating it as this-week urgent is selling rather than diagnosing. One practical consequence of choosing replacement: once more than 25% of the covering is replaced it becomes notifiable under Part L of the Building Regulations, which brings an insulation upgrade duty and requires certification. That is a cost and a benefit rather than a reason to delay, and it belongs in the quote.

Question 2

Do I need a new roof or just a repair?

Accepted Answer

Repair if the failure is local and the fixings and battens are sound. Replace if the roof is losing slates or tiles from several different places at once, because that means the nails or the battens have failed everywhere and patching is renting time. The answer comes from the loft as much as from outside. This is the question that decides whether you spend a few hundred pounds or several thousand, and it has an honest answer that does not depend on who you ask — provided somebody actually looks properly. The test is whether the failure is local or systemic. One slipped slate, one cracked ridge, one failed flashing on a roof that is otherwise sound is a repair, and a good one will last for decades. Slates coming off two or three a year from different slopes, with rust staining under the nail lines, is nail sickness — the original iron nails have corroded and the whole roof is letting go slowly. No amount of individual repairs stops that, because the remaining fixings are the same age and in the same condition. The loft is where the answer usually lives, and it is the part most often skipped. Underlay condition, batten softness, nail corrosion, daylight through the covering. A roof that looks perfectly even from the pavement can have torn brittle felt and battens you can push a thumbnail into, and none of that shows from outside. It matters that the covering itself is rarely the limiting factor. Good Welsh slate outlives its fixings comfortably — on a hundred-year-old roof a large majority of slates typically come off sound and go straight back on. Concrete interlocking tiles from the 1950s and 60s are the same story: the tiles look serviceable while the nails and battens beneath them have gone. That is why 'the tiles look fine' is not evidence that the roof is fine. There is a middle answer that gets overlooked. A roof that is genuinely near the end can often be kept going for a year or two with targeted repairs while you get proper quotes, arrange the money and pick a season. Doing a re-roof in spring rather than in a January panic saves real money, and nail sickness is a slow failure that gives you that time. Anybody treating it as this-week urgent is selling rather than diagnosing. One practical consequence of choosing replacement: once more than 25% of the covering is replaced it becomes notifiable under Part L of the Building Regulations, which brings an insulation upgrade duty and requires certification. That is a cost and a benefit rather than a reason to delay, and it belongs in the quote.

Question 3

Is my roof worth repairing?

Accepted Answer

Repair if the failure is local and the fixings and battens are sound. Replace if the roof is losing slates or tiles from several different places at once, because that means the nails or the battens have failed everywhere and patching is renting time. The answer comes from the loft as much as from outside. This is the question that decides whether you spend a few hundred pounds or several thousand, and it has an honest answer that does not depend on who you ask — provided somebody actually looks properly. The test is whether the failure is local or systemic. One slipped slate, one cracked ridge, one failed flashing on a roof that is otherwise sound is a repair, and a good one will last for decades. Slates coming off two or three a year from different slopes, with rust staining under the nail lines, is nail sickness — the original iron nails have corroded and the whole roof is letting go slowly. No amount of individual repairs stops that, because the remaining fixings are the same age and in the same condition. The loft is where the answer usually lives, and it is the part most often skipped. Underlay condition, batten softness, nail corrosion, daylight through the covering. A roof that looks perfectly even from the pavement can have torn brittle felt and battens you can push a thumbnail into, and none of that shows from outside. It matters that the covering itself is rarely the limiting factor. Good Welsh slate outlives its fixings comfortably — on a hundred-year-old roof a large majority of slates typically come off sound and go straight back on. Concrete interlocking tiles from the 1950s and 60s are the same story: the tiles look serviceable while the nails and battens beneath them have gone. That is why 'the tiles look fine' is not evidence that the roof is fine. There is a middle answer that gets overlooked. A roof that is genuinely near the end can often be kept going for a year or two with targeted repairs while you get proper quotes, arrange the money and pick a season. Doing a re-roof in spring rather than in a January panic saves real money, and nail sickness is a slow failure that gives you that time. Anybody treating it as this-week urgent is selling rather than diagnosing. One practical consequence of choosing replacement: once more than 25% of the covering is replaced it becomes notifiable under Part L of the Building Regulations, which brings an insulation upgrade duty and requires certification. That is a cost and a benefit rather than a reason to delay, and it belongs in the quote.

Should I repair or replace my roof?

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