Sagging is a common roofing problem that homeowner tends to overlook. Worst still, even new roofs seem to experience sagging issues, thus raising the question of the real causes of the sagging roof.
Q. My small ranch house (840 square feet) was built in 1970. I’ve had it only five years. I had some leaking last winter, so I’ve been looking into a new roof. There are two layers of asphalt shingle ...