I live in a 200 year old mid terrace. We had an extension three years ago and a new steel beam to hold up the back of the house. May or may not be relevant!!
Anyway, every night between 7pm and midnight there is one loud cracking/popping noise. The kind of Boise you would hear on an old pirate ship I would imagine. The noise comes from the stairwell up to the top floor (attic)
Dh thinks it's the woodwork settling after a day of expanding but I can't see how that explains it as eg it will still happen when the house hasn't cooled down from the heating.
Is my house about to fall down around my ears? Should I do something???