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SolarMount Unirac Code-Compliant Installation ManUal :FUNIRAC [3.2.2] Laying out L-feet L-feet (Fig. 7) can be used for attachment through existing roofing material, such as asphalt shingles, sheathing or sheet metal to the building structure. Use Figure 8 or 9 below to locate and mark the position of the L-feet lag screw holes within the installation area. If multiple rows are to be installed adjacent to one another, it is not likely that each row will be centered above the rafters. Adjust as needed, following the guidelines in Figure 9 as closely as possible. 0 Figure 7 7- Overhang 33% L max 1.- Foot spacing/- JL__Ra.ilip.go t'L'L -L- I1 L_/ 1 1,6-1%" 1 I It Lower roof edge - Rafters (8uilding Structure) Note: Modules must be centered symmetrically on the rails (+/- 29. Figure 8. Layout with rails perpendicular to rafters. Installing L-feet: Drill pilot holes through the roof into the center of the rafter at each L-foot lag screw hole location.1 '/6-13»1 - Squirt sealant into the hole, and on the shafts of the lag screws. Seal the underside of the L- feet with a suitable sealant. Consult with the company providing the roofing warranty. Securely fasten the L-feet to the roof with the lag screws. Ensure that the L-feet face as shown in Figure 8 and 9. For greater ventila- tion, the preferred method is to place the single-slotted square side of the L-foot against the roof with the double-slotted side perpen- dicular to the roof. If the installer chooses to mount the L-foot with the long leg against the roof, the bolt slot closest to the bend must be used. /1-1 r Lower roof edge l Rafters (Building Structure) r r H H 11 f j Fdot spacin_dail Span, L 2/ 1 Overhang 33% L max t Note: Modules must be centered symmetrically on the rails (+/- 29. Figure 9. Layout with rails parallel to rafters. . 0 Page 17