On a roof, moss can quietly trap moisture against your shingles, and in winter, that moisture becomes a bigger problem than most homeowners realize. That patch of green seems like a part of the scenery, especially on shaded roof sections or where tree limbs block the...

Have you ever noticed a ceiling stain near your fireplace and wondered how water got there in the middle of winter? Chimney flashing is probably one of those things you don’t think about much, but in cold weather, it’s the source of some very common roof leaks we see....