Posted 4/18/2016 21:32 (#5250880 - in reply to #5250608) Subject: RE: New Standing seam roof on house--over shingles???
ncks
clean the old shingles off and put one of the new underlayments down first, they will be good insurance against leaks and quiet it down.
if it ever hails you'll want it laying as flat and soldidly supported as possible.