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A. Contractor shall inspect substrates to receive rough carpentry, and ensure substrates are in <br />satisfactory condition prior to installation of rough carpentry. <br />B. Contractor shall inspect all new and existing rough carpentry including fasteners for <br />material condition before proceeding with installation. Deteriorated, rotted, damaged, <br />split, warped, twisted or wet materials shall be removed and replaced with specified <br />materials. Refer to Section 0122 00 -Unit Prices. <br />C. Contractor shall remove old cants, tapered edge strips, debris, old fasteners, etc. that <br />interfere with the installation of new rough carpentry. <br />D. Contractor shall notify Engineer in writing of unsatisfactory conditions. <br />E. Commencement of work signifies Contractor's acceptance of substrates. Any defects in <br />roofing work resulting from such accepted substrates shall be corrected at no additional <br />expense to the Owner. <br />3.02 PREPARATION <br />A. Steel/Metal Substrates: <br />1. Any pressure treated wood to contact steel or metal shall have the steel/metal <br />coated with a heavy coating of asphalt primer. <br />B. Roof Deck and Structure: <br />1. Roof deck and structure shall be dried and broomed and/or vacuumed clean of <br />debris and foreign matter prior to installation of the new rough carpentry. <br />2. Contractor shall adjust substrates to receive rough carpentry to ensure completed <br />rough carpentry installation is acceptable for roofing and sheet metal flashings. <br />3.03 INSTALLATION <br />A. Remove existing damaged or deteriorated wood blocking, nailers, and curbs and replace <br />with new material of same dimensions. <br />B. Re -secure all existing wood nailers at roof edges that are to remain. Fastener type and <br />spacing shall comply with this specification. <br />C. Install new wood blocking, nailers, and curbs to achieve a minimum eight inch flashing <br />height above the roof membrane. Wood nailers at perimeter roof edges and expansion <br />joints shall be installed to match insulation height. Maintain constant nailer height at <br />perimeter edges. <br />D. Wood blocking and nailers shall be installed concurrently with roof system installation. <br />Removal of insulation and/or folding back of roof membrane to install wood blocking and <br />nailers at a later date is not acceptable. <br />E. Set rough carpentry to required levels and lines, with members plumb, true to line, material <br />cut to fit, and braced to hold work in proper position. Use a belt sander to remove any <br />obtrusive surface irregularities. Drive nails and spikes home; and pull bolt nuts tight with <br />heads and washers in close contact with the wood. <br />F. Fit rough carpentry to other construction; scribe and cope for accurate fit. Correlate <br />Indian River County West WWTP <br />Roof Replacement 06 1000-6 Rough Carpentry <br />