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� <br /> � <br /> 3.2 PREPARATION <br /> A. Clean suhstrates ofprojections and substances detrimental to application. Cover knatholes , <br /> or other minor voids in substrate with sheet metal flashing secured with noncorrosive <br /> roofing naiis. <br /> B. Coordinateinstallationwithflashingsandotheradjoiningworktoensurepropersequencing. � <br /> Do not install raofing materials until all vent stacks and other penetrations through roof <br /> sheathing have been installed and are securely fastened against movement. � <br /> 3.3 TNSTALLATION <br /> A. ComQly with mannfactnrer's installation instructions and recommendations,bat not � <br /> iess than recommended 6y"The CSSB Roofing Maaual." <br /> B. Felt Underlayment: Apply one layer of felt underlayment horizontally over entire surface � <br /> to receive wood shakes, Iapping succeeding courses a minimum of 2 inches, end laps a <br /> minimum of 4 inches, and hips and valleys a minimum of 6 inches. Fasten felt with <br /> sufficient nwnber of roofing nails or aoncorrosive staples to hold underlayment in place � <br /> until wood sbingle application. <br /> C. Perimeter UnderIayment: Apply minimum 36-inch-wide layer of perimeter anderlayment <br /> at eaves. Extend perimeter underlayment at ea.ves a minimum of 24 iunches inside exterior � <br /> wall line. <br /> 1. In addition to eaves,apply perimeter underlayment at entire perimeter of surfaces � <br /> to receive wood shakes,including ridges,valleys,and rakes. <br /> D. Install wood shalces beginning at lower end with a starter strip of roli roofmg. Fasten shakes <br /> in pattem, with weather exposure, and using number of fasteners per shingle as � <br /> recornz�ended by manufacturer. Use vertical and horizontal chalk lines or premarked <br /> underlayment to ensure straight coursing. <br /> I. G�t and frt wood shakea at ridges and edges to provide maximum weather � <br /> prot�ction. Provide same weather exposure at ridges as specified for roof. Lap <br /> shakes at ridges to shed water away from direction of prevailing wittd. Fasteners <br /> at ridges shall be of sufficient length to penetrate sheathing as specified. ' <br /> E. Flashing: InstalI metal flashing as indicated and in accordance with detaiIs and <br /> recommendations of the"Wo�l Roofing"section of"The CSSB Roofis�g Mane2al." � <br /> F. CSSB specifications/notes,shall take precedence over similar notes in this specification. <br /> 3.4 ADNSTING , <br /> A. Replace arty damaged materials installed under this Section wi�new materials meeting , <br /> spec�ed requirements. <br /> END OF SECTION 07311 <br /> ' <br /> � WOOD SHAKES Pa e 4 of 4 � <br /> g <br /> ' <br />