I have 1100 square feet of roof to replace on a 100+ year old house that bakes in the sun all day 8 months of the year, and gets rained on the other 4. Most of the roof is 1.8/12 pitch, with a small section at 1/12.

I'm getting wildly conflicting opinions from both the internet and roofing estimators on the best option for replacement.

Some say it's just old school v.s. new school

Some say torch down is the undisputed goat but few people are actually certified to do it properly

Some say TPO all the way, no question

Some say TPO hasn't even been around long enough to know how long it'll last

Some even say to just cover the whole thing in ice & water and do shingles (it's lasted 100 years with shingles, why change it)

Is TPO really worth a ~60% markup over bitumen/asphalt?

Would you consider shingles even though some say the manufacturer won't warranty them on a low-slope roof?

Every old house in this neighborhood has shingles on their low-slope roof, and I have no experience with membrane systems- at…