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:1' UNIRAC Unirac Code-Compliant Installation Manual SolarMount <br />[3.2.3] Laying out standoffs <br />Standoffs (Figure 10) are used to increase the height ofthe <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 standofflocation, <br />exposing the rooting 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 />Iheistandoffs must be Jirm#attached to the building stnicture. <br />Figure 10. Raised.flange stando# deft) <br />atid.ftat. top standogusedin conjunction <br />with an Lfoot. <br />Overhang 25% L max -,IlL Foot spacing/ 4-BR L --13_i__-1.'gg..isgr].-1=-11 <br />4 / 21 1 41 <br />;25% module ·width <br /> each end <br />Pt <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 abdve <br />the rufters. Adjust as needed, following the <br />guidelines offig. 12,as closely as possible. <br />50% rhodule <br />,: width (TYP:) <br />Installing standoffs: <br />Lower roof edge p'L-- Rafters --j <br />(Building Structure) <br />Note: Modules must be'centeredsymnietrically on the·rails <br />(+/- 29. *thisis not the.case, caU Uniracjbr assistance. <br />Figure 11. Layout with rails perpendicular to rafters.perpendicular to rafters. <br />m=11331%; - »/4- 50% B typic c,i11 Iii <br />11 0 & <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 />scre·ws. <br />Ensure that the standoffs face as shown in <br />Figure 11 or 12. <br />Unirac steel and aluminum two-piece <br />siandoffs ( 1-5/8" O.D.) aie-J,=bisued for <br />collared ffashings available from Unit-ac. <br />Install and seal fiashings and standoffs <br />using standard bu ilding practices or as the <br />company providing roofing warranty directs. <br />( <br />--+ <br /><-Pr- <br />-r- <br />7, <br />=4== <br />1% <br />f9 <br />.. <br />X '11 <br />\\ 9 <br />1 -> <=* \ Folt spacing/ -1...3/4"i Ku'l Span "L" <br />1 1 <br />/ 1 1 1 <br />1 11 <br />---lt===11 1 t-_f <br />Lower root edge < \ RanvesBukiJS'c.ure) <br />Note: Modules mii.l be centered symmetrically on tletails <br />C+/- 21).lfthis is riot the case, call Uniracforassistance. <br />Figure 12. Layout with rails parallel to rafters. <br />P.,se <br />18