Single ply roof guarantees – often 15-20 years – cover materials and...

https://www.stealth-bookmark.win/single-ply-roof-guarantees-often-cover-15-20-years-but-the-actual-roof-can

Single ply roof guarantees – often 15-20 years – cover materials and workmanship, but the real service life can stretch 25-40 years with proper care