Waiting on a quote from roofer who visited my house this morning (see previous thread: https://bobistheoilguy.com/forums/threads/comp-shingle-for-old-home.392364/page-2#post-7157937). He will give me two quotes, one for simply repairing the damage I told him about, and a second for the entire roof (the comp shingle currently on it is 25 years old). The other quote will be for recovering the roof, which involves leaving the current shingle on, and then simply laying down new shingle over that.
Now I really wouldn't know--which is why I'm posting here--but I wanted to get other folks opinions of this. Is this kind of like putting a new paint job on a car, without taking the old paint off--as if, the new paint will peel off when the old paint does, too? Would this give me less longevity on the new shingle, than if I had them tear off the old stuff and then put down the new roof?
Now I really wouldn't know--which is why I'm posting here--but I wanted to get other folks opinions of this. Is this kind of like putting a new paint job on a car, without taking the old paint off--as if, the new paint will peel off when the old paint does, too? Would this give me less longevity on the new shingle, than if I had them tear off the old stuff and then put down the new roof?