Q: We added on to the back of our house on the lower level about 15 years ago, and this created the opportunity for a roof deck that is accessible from our second floor. The roof is covered with tar ...

Q: I enjoyed the article about puddling on flat roofs (Nov. 2, 2002). I have a slope problem on a 12-by-10-foot one-story addition attached at one edge to a higher wall of my split-level house. It is ...

Many large, commercial, low-rise buildings such as warehouses, big box retail stores, agriculture structures, aviation facilities, etc. often don’t benefit from steeply-sloped roofs the way residences ...