I had a loose tile on the roof in front of the chimney breast and noticed that in the loft the internal chimney breast was a bit damp. Since then had it repaired (i.e. the tile tapped down and the flashing secured.
I once saw a surveyor test water moisture in wall with a little machine. I would like to know if there has been damage to the chimney and wondered if I could buy one to test. Just really worried that this is a serious problem and I have been ripped off!
How can I check to make sure there is no permanent damage?