Laserfiche WebLink
Ludowici Interlocking Tile Installation Manual: LudoSlate & LudoShake <br />60 www.ludowici.com <br />Measuring and Chalking the Roof <br />Layout and chalking the roof accurately are critical to the <br />roof’s performance and appearance. If the eaves are straight <br />and level, all horizontal lines must be parallel to the eaves <br />and all vertical lines must be perpendicular to the eaves. <br />Check the roof deck to determine if the deck is square prior <br />to layout. <br />Step 1: Determine Width and Length Exposure <br />Clay tiles, depending on the style and profile, vary in <br />exposure and recommended head lap. Ludowici Interlocking <br />tiles are laid with a minimum headlap of 3". Before chalking <br />the roof the installer should verify the tile pattern being <br />installed, and measure, noting average length and width <br />exposures of the tile shipped. <br />The width exposure should also include the spacing gap <br />between tiles. Interlocking tiles are typically laid with a <br />gap of 1/8"; however, this can be compressed or expanded <br />slightly. The usual overhang at the eave is 2"; however, this <br />can be compressed slightly to accommodate full courses. <br />Step 2: Chalking Vertical Lines <br />Vertical lines are chalked first. In the case of a hip roof, the <br />first line is struck in the center of the roof equidistant from <br />each hip. The remaining vertical lines are then struck to <br />the right and left at intervals equal to your average width <br />exposure x 5. Care must be taken to ensure that all vertical <br />lines are parallel to the water flow. For roofs with gables at <br />both ends the horizontal exposure should be adjusted to <br />work out to full tile or half tile to reduce cutting. <br />NOTE: Vertical lines are not needed with random width <br />LudoSlate™ Premier or LudoShake™ Premier. <br />Figure 60.1 Ridge and Hip Stringer Detail <br />Underlayment <br />18" Strip of Ice and Water <br />Shield <br />Foundation Grade <br />Wood Stringer <br />6" <br />M <br />i <br />n <br />.