Q. Architectural shingles were installed over bare roof boards on our house four years ago. Will the absence of felt underlay affect the shingles' life? Can a metal roof be installed over the shingles ...

Dear James: Our 3-year-old light-colored roof already has dark stains over most of it, except for near the chimney. Why is that, and how can we stop the staining from getting worse? — Phil R. Dear ...

Late last fall we had our roof replaced. This spring, as the snow melted and I was walking around the yard, I found six shingles on the ground. Looking up on the roof, I could see where they had blown ...

Q. Lately I've seen roofers install a strange product that looks like traditional felt paper, but it's not. It has a peel-away backing paper, and this material sticks to the wood sheathing. What is it ...

Q: I have a small house, and it needs a new roof. I can’t afford to hire a roofer. My house has shingles on it, and I can walk on the roof with little difficulty. I’ve never installed roof shingles.