I’m not sure if anyone can help. A small part of my nans roof had a tile slip which created some damage to the roof and inside the house, inside is not a problem but obviously the roof is more important and may need some expertise. Its probably been like it for 20+ years but a roofer came round and said it would create lots of problems around the whole roof every few years, and would need the whole roof re doing for £18000, I find that hard to believe as its still the same area since 20 years. It is an old house(60s) and to be fair the roof and felt hasn’t been replaced in that time, but itis only a small section of the roof. We will look to get a second and third opinion.
There are two dormers one is fine, the other has a small crack along the outside of the roof which I filled with some sielent but its hard to decide if we actually need to re do as only a small section of the dormer (the dormers have been redone in the last 20 years) but from inside we can see a small section of either water or maybe just the seilent but unsure it hasnt got worse.
There could be an issue here with rot if the roof was left exposed like that for quite some time. This may be the reason why the roofer is suggesting repairing the whole roof. With regards to the dormer, if there is a crack on one of them I would repair it properly. Sealant will not be a good long term solution. Ok for a short term fix that is all. Maybe your next action should be to get in another 2 roofing companies to have a look and see what they say.
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