slipped

I live in a bungalow and a roof slate, from near the ridge, has slipped completely off the roof. I called a few roofers, one didn't return my call and the other, understandably, wouldn't just return the slate to its rightful place. They would also have to check the roof for any other issues and...

First post on this forum so please go easy. I was up on my top floor flat roof extension to fit a new cowl to the bathroom extractor fan and noticed that there is a missing and slipped coping stone to the chimney breast. There are (were) only 5 stones in total 3 smaller ones sitting on top of...