JennyB wrote:Thank you for your reply, but I'm guessing that tar would have to be applied onto the outside of the roof? I'm really looking for something that can be applied onto the ceiling of the room indoors.
Like you said it's not a cure, and if you just isolate on the ceiling the water is still going to infiltrate in to the roof and cause damage, rot away the roof etc.
The problem is you're not getting what you paid for when hiring roof fixers, you should take it to the adequate law orginazation. Just show them the bill and the non-properly-fixed-roof.
I'm pretty sure the UK like EU countries have a obligatory warranty on goods and services. On imobile things like houses I believe it's 5 years minimum warranty.