Q: I was inspecting my asphalt-shingle roof the other day. At the top of the roof where the peak is, I noticed some defects. My shingles are only 6 years old, so I was shocked to see deterioration.

Question: I was inspecting my asphalt shingle roof the other day. At the top of the roof where the peak is, I noticed some defects. My shingles are only six years old, so I was shocked to see ...

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.

Any part of your house’s exterior can get assaulted by wind, rain, hail, bitter cold, intense heat, strong sunlight, and other weather insults. But your roof typically gets the worst of it. Things ...