Flashing is a good way of preventing water from entering a dwelling at the point where the roof meets the walls. To begin the installation, fold a five-by-seven piece of aluminum flashing lengthwise.

Pry, chisel and scrape off old metal flashings and roofing cement. Before you do anything, get your ladder, roof brackets and safety harness set up so you can work safely and efficiently on the roof.

Asphalt, wood shakes, slate and other overlapped roofings are fine until they meet an obstruction. Up against a dormer, a vent pipe, a chimney, they need flashing — a patchwork of metal sheets, and ...

Q-Last year I added a room to the back of our house and ever since have had trouble with roof leaks from where the flat roof on the new extension meets the existing wall of the house. I installed ...

Q: I need a new roof and am in the process of getting estimates. Currently there are three layers of shingles, which I am told is the limit. I can't decide whether to tear off the entire roof, adding ...

In this week’s column, I’m going to explain where almost all roof leaks happen, and how simple it is to prevent or fix them. Most professional roofers will agree that a roof’s flashing is at the ...