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Ludowici Interlocking Tile Installation Manual <br />17www.ludowici.com <br />Tile Style Nominal Size of Cant Strip <br /> <br />LudoSlate™ and LudoShake™ 3/4" x 2" <br />French 1-1/2" x 2" <br /> <br />Applying Cant Strips, Wood <br />Nailers and Battens <br />After lining the roof with underlayment, install wood <br />stringers for ridges and hips, cant strips at eaves if <br />required and battens as field tile nailer strips (required for <br />certain applications). The heights of the stringers, battens <br />and cant strips are determined by the tile pattern and the <br />type of fittings to be used. <br />Cant Strips for French, LudoSlate™ and LudoShake™ <br />Apply a properly sized cant strip (see Chart 17.2) 48" long <br />and pressure treated directly to the underlayment, with <br />1/2" gap every 96" to allow drainage. Cover with copper <br />flashing drip edge and a 6" Strip of Self Adhering Ice and <br />Water Shield. <br />Underlayment <br />6" Strip of Ice and Water <br />Shield <br />16 oz. Copper <br />Eave Flashing <br />Cant Strip <br />Figure 17.1 Copper Flashing Eave Detail <br />Stringers for Hip and Ridge <br />Attached Ridge and Hip Stringers with corrosion resistant <br />fasteners 2’ O.C. (see Figure 17.1). <br />All wood stringers must be covered with two layers of <br />coated base sheet or a self-adhesive Ice and Water Shield. <br />Stringers must be pressure treated and foundation grade <br />wood. The sizes for stringers vary with tile and Ridge <br />Cap type. Wood stringers must be a minimum of 1-1/2" <br />thickness and of proper height to carry hip and ridge <br />pieces. <br />Stringer height for hip and ridge vary depending on <br />the tile profile, hip and ridge type and roof pitch. To <br />determine proper stringer heights for your application <br />lay field tile and hip on the roof deck in the correct <br />configuration and measure the gap between the <br />underside of the hip tile to the apex of the hip on the roof <br />deck, this will be your stringer height. <br />NOTE: Hip caps should just rest on the bottom edge of <br />the field tile and run in a straight line parallel to the roof <br />slope. <br />Follow the same procedure for the ridge stringer. For <br />Vented Ridge adjust Ridge Riser Bracket to correct height. <br />Even on conditions where the stringer height is minimal it <br />is important to install them to provide a straight surface <br />for the hip tile to rest. Do not eliminate the stringer and <br />just let the hip tile rest on the field tile. This will produce <br />an irregular hip that snakes up and down. <br />Battens <br />For applications where Battens are specified, use nominal <br />1" x 2" pressure treated wood. Vertical battens should be <br />spaced no further than 20" on center. Horizontal battens <br />are applied one per course of tiles (see Fig 17.1).Chart 17.2 Proper Sizing for Cant Strips <br />Ice and Water Shield Ice <br />Dam Protection Under <br />UnderLayment