In article ,
"Joseph Meehan" wrote:

What part of the country is the home located? What kind of roofing
materials are you planning on using? What is the current condition of the
roof? Have you had any problems with the existing roof?

Northern coastal California, current roof is a 28-year-old "20 year"
asphalt shingle roof (original construction) with no problems. Planning
to replace with dimensional shingles, so-called 40 or 50 year.