If I put in the shingles ahead of the roof trim is entire, I must understand how much the trim pieces plus the drip edge will extend the roof deck, And that i let for that extension. As an example, if a one×six rake board plus a bit of molding, http://judahlrhzo.blog-mall.com/2104865/the-fact-about-alpine-roofing-that-no-one-is-suggesting