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, <br /> , <br /> A. Weather Conditions: Proceed with Work only when existing and farecasted weather <br /> conditions will permit Work to be installed in compliance with manufacturer°s <br /> recommendations and when substrate is completely dry. , <br /> 1.7 EXTRA MATERIALS <br /> A. Deliver extra materials to Owner. Furnish extra materials matching products installed as , <br /> described below,packaged with protective covering for storage and identified with labels <br /> clearly describing contents. <br /> l. Furnish quantity of full-size wood shakes equal to 2 percent of amount installed. ' <br /> 1.8 WARRANTY ' <br /> A. Special Project Warranty: Submit a writlen warranty,executed by manufacturer,agreeing <br /> to repair or�epiace wood shingles that fail in materials or workmanship within the specified <br /> warranty period. Failures include, but are not limited to, deformation or deterioration of , <br /> shakes beyond normal weathering. This warranty shall be in addition to,and not a limitation <br /> of,other rights the Owner may have against the Contractor under the Contract Documents. <br /> 1. Warranty period shall be 20 years after date of Substantial Cornpletion. ' <br /> PA�RT 2-PRODITCTS <br /> 2.1 MANUFACTIJRERS t <br /> A. Available Manufacturers: Subjectto compliance with requirements,manufacturers offering ' <br /> wood shakes that may be incorporated in the Work include, but are not limited to, the <br /> following: <br /> B. Manufacturer: Subject to compliance with requirements, provide wood shakes by , <br /> following: <br /> 1. CERTI-LABLE ' <br /> 2.2 WOOD SI-�AKES <br /> A iJse Certi-Labte Cedar Shakes type Certi-Split Handsplit Shakes,Blue Label,(Number l , <br /> Grade) 24"x 1/2" installed by a Shingle Bureau ("CSSB") appraved installer. Proper <br /> application plays a large role in determining roof system integriTy. <br /> Fasteners: Two nails(only)for each Certi-label shake-approximately 3/4 from edge and ' <br /> approximately 1-1/2"above exposure line. Each Certi=label shalce should be applied with <br /> two corrosion-resistant fasteners,such as stainless steel(type 304 or 316),hot-dipped zinc <br /> coated, or aluminum nails or other fastener as accepted by your local building official. ' <br /> Fasteners shall be long enough to penetrate into the sheathing at least 3/4" or all the way <br /> through the driven flush with the surface of the Certi-label shake. <br /> Felt: The bottom edge of the felt should be positioned above the butt of the shake at a ' <br /> distance equal to twice the weather exposure.. Fedt interlay is shown in Figure 1. <br /> Underdriving or overdriving any fasteneer will affe,ct the integrity of the roofing , <br /> system. Certi-Guard (fire-retardant-treated} or Certi-Last (preservative-treated) <br /> shakes: Ask the treatment company which fasteners are recommended for use with their <br /> pressure-treated Certi-label shakes. Some fasteners are not compatible with treated m�terial. ' <br /> WOOD SHAKES Page 2 of 4 <br /> ' <br />