Good Morning ! I'm new on here. I'm a roofing salesperson. Is there a standard for shingle overlap - drip edge ? I was taught there should be 1 inch at eaves and 1/2 inch on rakes. I also know there are roofers who do not overlap at all. Thanks ! Any links would be appreciated as well.
Read the instructions on the packaging and go with what the manufacturer suggests.
Around here, the instructions are in both English and Spanish. I may be one of the few who have ever taken the time to read them.