asphalt shingle roof installation 7

https://sticky-wiki.win/index.php/Essential_Guide_to_Asphalt_Shingle_Roof_Installation

Installing asphalt shingles on a roof starts with a clean, dry deck and a layer of underlayment. You nail each strip from the bottom up, overlapping them to create a water-shedding surface. It's messy, sweaty work—cutting around vents and chimneys takes patience—but the finished roof looks clean and holds up well in rain and snow.