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Ludowici Interlocking Tile Installation Manual: Morando 14" & 16" 36 www.ludowici.com Valley Tiles Tile to be installed in valleys can be mitered in the field or by ordering and using special factory tile. Whether field miter cut or factory tile are used, the tile fasteners should never penetrate the valley flashings. Tile to be installed over the copper valley flashing should be drilled or notched and wired with solid 16 gauge wire to fasteners driven into the deck beyond the flashing. NOTE: Notching and drilling was addressed previously on Page 19. In situations where valley tile pieces are so small that it is not practical to notch or drill, use the adhesive RT600 (an OSI product) or its equivalent. If special factory valley tile are being applied prior to in- stallation, it will be beneficial to loose lay the entire eave field tile course including the valley tile. This loose laying process of the valley’s left side will advance as a typical installation would, from right to left. But, when loose laying the valley’s right side, it will advance from left to right. The installation of the Interlocking tiles will slow the process initially. Each tile, when spaced on the deck, will require a slightly upward lifting to allow for the proceed- ing tile to be laid into the Interlocking channel. Once the spacing is approved, the space can return to the standard. The tiles can be fastened in the typical right to left pattern. The loose laying process becomes vitally important when the roof deck runs from valley-to-valley. The focus must be to space the eave course so it consists of all full field tile and is finished on both ends with the special cut valley tiles or so it consists of all full field tile, one end band (half tile) and is finished, as stated above, with the special cut valley tiles. Keep in mind not to allow any more than 5 pieces pulled to the extreme or crowded together. When the distance between valleys is so minimal it does not allow for the above mentioned spacing, one field tile per course will require field cutting to allow for proper lay up. If field mitered valley tiles are applied, they should be trimmed to provide a clean, even, continuous edge along the entire valley length. Figure 38.1 Valley Detail 16 oz. Copper Valley Flashing With Hem Copper Cleats 24" O.C. 6" Strip of Ice and Water Shield Underlayment DO NOT Nail Through Copper Valley. Attach Small Valley Tiles With Copper Wire and Fas- teners Placed Above Flashing, Apply Small Dab of Roofing Cement to Prevent Migration Apply a 1" Dia. Dab of Roofing Cement to Small Valley Tiles to Prevent Migration To encourage leaves and snow to slide down the valley, the gap between the Valley Tiles and the center line of the valley should be tapered from 3" at the top to 4" at the bottom. This can be increased for long valleys or heavy snow locations. Chalk Line for Valley Tile Cut Line, Tapered NOTE: The Open Cavity at Valley Tiles Can be Pointed With Type “M” Mortar