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:FUNI RAC Unirac Code-Compliant InstaUation Manual SolarMount <br />[3.2.3] Laying out standoffs <br />Standoffs (Figure 10) are used to increase the height of the <br />array above the surface of the roof. Pair each standoff with a <br />flashing to seal the lag bolt penetrations to the roof. <br />Use Figure 11 or 12 to locate and mark the location of the <br />standoff lag screw holes within the installation area. <br />Remove the tile or shake underneath each standoff location, <br />exposing the roofing underlayment. Ensure that the standoff <br />base lies flat on the underlayment, but remove no more mate- <br />rial than required for the flashings to be installed properly. <br />ThestandoB must befirmly attached to the building structure. <br />Figure 10. Raisedjlange standoff Oeft) <br />and,flat top stando#used in conjunction <br />with an L-foot. <br />Overhang 33% L max -115. Foot spacing/ _J <br />Rail Span. L !1 <br />r----PR-D li 11 S <br />If multiple high-profile rows are to be <br />installed adjacent to each other, it may not <br />be possible for each row to be centered above <br />the rafters. Adjust as needed, following the <br />guidelines of Fig. 12 as closely as possible. <br />HH <br />JUL_ <br />Lower roof edge „ "<- Rafters <br />(Building Structure) <br />Note: Modules must be centered symmetrically on the rails <br />C+/-29. <br />Figure 11. Layout with rails perpendicular to rafters.perpendicular to rafters. <br />/8" + - <br />Installing standoffs: <br />Drill 3/16 inch pilot holes through the <br />underlayment into the center of the rafters at <br />each standoff location. Securely fasten each <br />standoff to the rafters with the two 5/16"lag <br />screws. <br />Ensure that the standoffs face as shown in <br />Figure 11 or 12. <br />Unirac steel and aluminum two-piece <br />standoffs ( 1-5/8" O.D.) are designed for <br />collared flashings available from Unirac. <br />Install and seal fiashings and standoffs <br />using standard building practices or as the <br />company providing roofing warranty directs. <br />P ) P=k= =-t-Mcill Span "L" <br />Foor spacing/ - - 3/8" <br />11 / : <br />9 4 4 <br />Lower roof edge | 1 -4-- 4 <br />1/ f <br />, Overhang 33% L,max <br />l <br />Rafters (Building Structure) <br />Note: Modules must be centered symmetrically on the rails <br />Figure 12. Layout with rails parallel to r«fters. <br />PIC <br />18