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<br />High Velocity Wind Zones <br /> <br />For solid decking, at least 112-inch structural plywood or aSB (5/8" for any High <br />velocity wind zone of 120 and above) supported on rafters at a maximum of <br />24" on center. Battens: 9-5 Rib Metal Roofing can be separated from the <br />moisture barrier by minimum, nominal 1 "x3" yellow pine battens spaced on <br />maximum 24" centers or according to ASCE 7-98 calculations where applicable. <br /> <br />CAUTION: Direct contact between pressure treated lumber, green, damp, <br />and metal roofing must be avoided in order to prevent potential corrosion <br />and moisture build-up. The battens must be fastened to the roof deck with <br />minimum #6 screws at 12" on-center or two minimum 8d common or pneumatic <br />nails spaced 8" on-center or one every 4" on-center (or by applicable calculations <br />according to ASCE 7-98.) <br /> <br />Battens must be installed to support the entire width and length of ridge, <br />eave, hip, valley, and gable end trims. Battens are optional if re-roofing over <br />shingles. <br /> <br />NOTE: Re-roofing over shingles without a batten is allowed providing the roof <br />has been checked by a licensed roofing contractor to insure levelness and <br />pullout integrity. <br />