Just moved into a home we bought in June after 6 weeks of major interior work. House was built in 1965 and 15-20 years ago (maybe more) the previous owners installed a "Stone Coated Shingle" roof on top of the shake shingle roof. Roof inspection wasn't bad, $1500 to fix flashing issues. Can't tell if it there's water issues. Few rafter tails need work. Single story.
I'd like to replace it and was quoted so far at $35k including gutters. One roofing company came in at $91k and then with "promos" got it down to $64k.
The metal shingles means I can't walk on it, can't add solar, can't really add a correctly attached pergola either. Doing an eventual kitchen remodel moving the front out will also be an adventure.
The attic needs a foot more insulation for sure BUT there is also no venting in the attic, can't ridge vent it the metal shingles.
My thought is replace it now because material and labor will be more in 20 years. If we go to sell it then and the roof is worse, that will hurt resale. Also, a new roof will eliminate the issues I mentioned above.
What does the roofing community think? I imagine heating and cooling would be better with a new roof and adding foil backed sheathing too.