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 ...

You’ve heard the Guys for years saying that any building needs a great roof and a great foundation. But in that discussion, we have ignored a huge segment of the roofing market: flat roofs. According ...