My roof has asphault shingles and does not leak. However the granuels are c oming off making the roof look bad. They have metal roofing that looks like shingles out now, which to me looks way better than the straight ribbed me tal roofing. I would like to attempt this myself. Has anyone done this? I h ave put asphault shingles on the 12x16 shed I built. It turned out nice. I bought a book and read it before the job.
One question I have, is it ok to put the new metal shingles on top of the o ld shingles or will the new roof last longer if the old ones are removed?
Another thing I have heard people doing is when using the traditional ribbe d metal roofs, they would put down wood stringers which were spaced apart e nough to put addition insulation between them. Then the metal was put on to p, this would give greater insulation value to the roof. (I have a bonus ro om upstairs that gets terribly hot in the summer time.)
I appreciate any advice!