Use the exact same procedure as you did Along with the felt paper if you reach the ridge: Wrap the initial side over the top, then wrap the second facet around the first. After you get to the vent, slide the reduce shingles beneath the flashing and drive nails from https://bestemsguide.com/the-top-residential-roofing-companies-in-chicago-il-trusted-experts-for-your-home/