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Ludowici Interlocking Tile Installation Manual <br />14 www.ludowici.com <br />Assemble All Tools and Supplies <br />The following tools are needed for basic <br />installation of clay roofs: • Safety equipment as required by OSHA and other local <br />and state agencies• Rule or tape • Mason’s trowel and bucket• Chalk line and chalk • 4" diamond-tipped turbo blade on angle grinder• Claw hammer • Protective eye wear/dust mask• Chipping hammer • Caulking gun• Felt knife • Sheet metal shears• Roof jacks• Slate ripper• Segmented diamond blade (8"to 10" diameter) • Wet tub saw• Tile nippers• Marking pencil • Sharp steel punch• Battery-operated, clutch-driven drill <br />(with extra batteries) • Carbide spear point glass drill bits• Small steel roller <br />IMPORTANT: <br />All roof work can be hazardous. Safety requirements are <br />spelled out by OSHA and individual state Occupational <br />Safety and Health Administration regulations. It is <br />the responsibility of the installer to take all necessary <br />precautions. Contact the Occupational Safety and Health <br />Administration for complete information. <br />IMPORTANT: <br />All roofing components should be selected to be <br />compatible with the long service life of a Ludowici roof. <br />In addition to tools, the following materials are needed: <br />• Flashing: use a minimum weight of 16 oz. copper, at <br />least 24" wide with 1/4" edge turned over and fastened <br />with cleats for valleys. Under special circumstances, <br />such as unusual exposure to high wind or heavy snow, <br />this flashing weight should be increased. Lighter weight <br />copper flashings are undesirable because they can <br />puncture too easily and they will not provide the wear <br />life required for a long-life roof system. <br />• Underlayment: two layers of No. 30# asphalt-impreg- <br />nated roofing felt or one layer of No. 43# coated base <br />sheet, doubled on rough surfaces, hips, valleys and ridges, <br />or one layer of Ice and Water Shield. <br />• Roofing cement: roofing cement for gable rakes, <br />hip rolls, ridges, stringers and other conditions should <br />be non-running, heavy-body flashing cement composed <br />of mineral ingredients to meet the requirements of <br />ASTM D-4586. <br />• Cant strips, wood nailers and field tile nailer strips: all <br />should be foundation grade wood. <br />• Mortar and mortar color to match tiles: Ludowici <br />defines mortar as one part Portland cement and four <br />parts sand (to ASTM specification C-270). Contact your <br />local brick distributor to acquire colorant. <br />• Silicone sealant or adhesive: the recommended sealant <br />for exposed caulking is Dow Corning® 790 Silicone <br />Building Sealant™ or GE® SilProof™ (ASTM C-920, <br />low modules). These sealants may be used as hidden <br />adhesives. NP1 or other adhesives may be suitable <br />as well; however, care should be taken to select for <br />maximum durability and also for compatibility with <br />adjacent materials. Some sealants are available in <br />different colors to match tiles. <br />Getting Started