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.

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.

First, remove the skylight’s counterflashing. On some units, you have to remove the whole glass frame. On other models, you simply unscrew a metal channel from the curb. Next, pry off the old shingles ...

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 ...

Q. I had a home built this year and decided to have it inspected. The inspector found a problem with the “counter flashings,” which he said were improperly installed. The metal flashings are on the ...