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Ludowici Interlocking Tile Installation Manual <br />32 www.ludowici.com <br />Additional Flashing Details <br />Plumbing pipe vents and stacks, skylights, roof-to-roof <br />transition and other penetrations all require special flashing. <br />Figure 32.1 Flashing at Skylights <br />16 oz. Copper Back Flashing <br />Extends Upslope Under Tiles <br />Approximately 24" <br />Waterproof Underlayment <br />Turned Up at Curb <br />Skylight Integral Counter Flashing <br />16 oz. Step Flashing at Each <br />Course <br />Raised Curb <br />16 oz. Copper Apron Flashing <br />4" Minimum Up Skylight and 4" <br />Minimum Across Tiles <br />NOTE: Be sure to order Skylights with a flashing <br />package specifically designed for tile roofs and to <br />accommodate the combined thickness of the layers of <br />Interlocking tile specified. <br />Figure 32.2 Flashing at Vents <br />16 oz. Copper or Soft Metal <br />Flashing Extended Upslope to <br />Achieve 3" Head Lap <br />Roll Top of Flashing Into Pipe or <br />Cap With Formed Soft Metal Cap <br />Soldered Flashing Sleeve <br />24" x 24" Ice and Water Shield