roof replacement process 18
https://touch-wiki.win/index.php/How_Builder-Grade_Roof_Materials_Compare_with_Upgrades_for_Austin_Homes
We start by tearing off the old shingles and inspecting the deck for rot or damage. Then we lay down underlayment, install new flashing around chimneys and vents, and finally nail on the chosen shingles, working row by row from the bottom up. The whole job usually takes three to five days, depending on the roof's size and complexity.