A: Flat roofs are the bane of builders ... While you're at it, see if you can correct the slope on the roof so water drains correctly. Because you're removing the old tar and gravel anyway ...

Today’s flat roofs are not actually flat. They tend to slope at about 1/8 inch per foot with the low end leading to a drainage system. Some are actually very shallow pyramids that drain on all ...

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.

Most flat roofs aren't actually flat; they slope slightly to one side (a 1/4-in. per foot is considered minimal) to allow ...

your flat roof shouldn’t result in ponding at all—the water should flow freely to your gutters or drains. And two, ponding resulting from minor problems with your roof’s slope or minor low ...