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Drip-Edge Details To the Editor: In the drawing showing the nailing requirements for asphalt shingles (On the House, 8/00), I noticed that you show the felt underlayment installed over the metal drip edge on the rake edge of the roof. I believe that the Uniform Building Code, and most manufacturers, require the drip edge on the rake edge to be installed over the underlayment. Am I missing something, or was it drawn wrong? Steve Hutchings Missoula, Mont. Harrison McCampbell responds: The Uniform Building Code, like the CABO code and the other model codes, simply requires all flashing to be installed "as per shingle manufacturer's printed instructions." When you look at any of the manufacturer's instructions or recommendations, they may show metal drip edge