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A brown ring on an upstairs ceiling usually means one tile, one lifted flashing, or mortar gone from the ridge. It rarely means a new roof, whatever the first person to look at it tells you. I do the repairs that stop it, and I say plainly when a job is bigger than that.
Roof repairs nearly always start indoors, with a mark on a ceiling that was not there last winter. By then water has been getting in a while and has worked through the felt, the boards and the plaster, so the stain is the end of the story rather than the beginning.
What it almost never means is that the roof has failed. One slipped slate lets in a surprising amount of water in driving rain, and putting it back costs a fraction of what people fear.
Please do not go up and look yourself
People fall off ladders every year trying to get a look at a slipped tile, and a wet or mossy roof is far worse underfoot than it looks from below. Nothing up there is worth a fall. Put something under the drip, photograph the ceiling, and let somebody who does this for a living go up.
Start inside
Where the stain sits, how big it is, and whether it only appears in driving wind from one side. That last one narrows it down a lot.
Then the loft
Daylight through the boards, a damp rafter, a wet patch on the felt. Water runs along under felt before it drips, so the wet spot is often nowhere near the hole.
Then the roof
Knowing roughly where saves wandering about. Usually one tile, a length of lifted lead, or mortar gone out of the ridge.
Then a price
For the repair, not for a roof you do not need.
Slipped and cracked slates get refixed with tingles or swapped. Broken tiles come out and new ones go in. Lead flashing lifted away from a chimney or abutment gets dressed back down or renewed. Crumbled ridge and hip mortar is raked out and repointed, and a stack with soft joints gets the same.
Where I stop is a re-roof. If a slate roof has gone through the whole slope, or the battens have had it, that is a roofing firm with a scaffold and a week, not me on a ladder for a morning. I would rather say so than sell you three repairs that buy a year each.
If water is running down the outside of the wall rather than through the roof, start with gutter clearing or gutter repairs. That is a far more common cause of a damp upstairs wall.
The expensive answer to a damp ceiling is a new roof. On most houses round here it is also the wrong one, so establish what you are actually being quoted for.
On a genuine repair the figure comes down to access: whether it can be reached off a ladder, whether it wants a tower, or whether a three storey terrace needs a scaffold. After that it is how many things need doing while I am up there, because two tiles and a length of ridge on one visit costs far less than three visits.
Free quote, and I look before I price.
Often, yes, and I will say so rather than manufacture a panic. What you do not want is leaving it a whole winter: water sitting on battens and plaster does slow damage that costs more than the tile ever would.
It narrows it down. A stain mid-room, one tight against a chimney breast and one along the wall edge point at three different things. It does not replace getting up there, but I arrive with an idea.
If it is still standing on the roof, yes. It is the most exposed brickwork on the house and being unused protects it from nothing. Once the joints soften, water gets into the stack and works its way down inside. Taking one down or capping it off is a different job.
A slate refixed properly lasts as long as the ones either side, usually decades. A repair to a roof genuinely near the end buys a year or two. Knowing which yours is, is the useful part, and I tell you when I look.
Ring rather than message this one. 07515 154559, Monday to Friday, 8am to 6pm. Tell me where the mark is and what the weather was doing when it appeared. That is usually enough to say whether it wants seeing this week or keeps until the next dry spell. Mexborough outwards: Rotherham, Doncaster, Barnsley, Sheffield and everything inside twenty miles.
I come out and look before I price anything. Free quote, no call out fee.