A “photo voltaic roof procedure” is normally a series of photo voltaic panels installed along with one-ply membrane. Most residences developed with asphalt shingles in mind won't be ready to assist the burden of a superb slate roof, so if you’re thinking of slate, you’ll need to check into this. https://pingdirapp69.directoryup.com/construcci%C3%B3n-3/alexandria-home-solutions