Dear James: I use my dark attic just for storage, but the underside of the gable roof is low. I think adding a dormer would help a lot. What is a good plan to build one? -- Steph T.

Is your home chilly and dark in winter, or stuffy and dark in the summer? If your home has too small or too few windows, it can be difficult to get the natural light and ventilation you crave, and ...