To exhaust it, there can be ridge vents, tucked under the cap at the top of the roof, or sometimes horizontal vents installed a few feet down from the ridge. Gable vents, which often have much ...

When you reach the vent, slide the lower shingles underneath ... Once all your shingles are installed, you'll need to cover (cap) the ridge (and hip ridges if you have a hip roof), and you use ...