Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 129 Installation Guidelines: WMP-RETRO Steps for Preparing and Installing WMP-RETRO: ROOF & WALLS (con’t) • If the roof has screw down panels, install a self locking washer on every other fastener at least every 12”. For a standing seam roof, the self locking washer should be installed on only one of the two clip fasteners, the one closest to the web every 24”. • Where the folded edge overlaps the adjacent facing, install a 4” long section of wall angle (**) at this overlap to secure the seam prior to the next step with a 3/4” TEK screw located in the wall angle pointing slightly toward the roof. Caution: Make certain the angle of the screws is shallow enough that you do not risk damaging the roof panels. • The facing is now ready to be attached to the op- posite purlin. Use a 45” long section of wall angle (**) to smooth wrinkles and to position the facing tight against the existing facing. When cutting the wall angles to length, be certain the ends do not have any burrs which will tear the facing during installation. See Fig. 4A. • Next, pull the excess facing beyond the wall angle so the facing is taut and square and then move the wall angle tight against the purlin web and the existing facing. See Fig. 5A. • Once the facing is positioned with the desired appearance and tight against the existing facing, secure the wall angle to the purlin. See Fig. 6A. • Holding the wall angle tight in this position, attach it to the web of the purlin with 3/4” TEK screws or a nail gun. These fasteners should be located approximately 4” to 6” from each end and with one in the center of the wall angle. When operat- ing any power tools, proper training and the appropriate safety equipment must be in place. • The excess facing that extends beyond the wall angle should be trimmed off flush with the bottom edge of the wall angle. See Fig. 7A. • Next, apply a small bead (1/8”) of 100% silicone caulking between the overlapped seam of the new facing near the edge and press smooth. Wipe down any dirt or debris that may have adhered to ´the facing. See Fig. 8A. • Continue to install the new facing by overlapping the long edges by 1-1/2”. • The direction of the installation may depend on the location of the roof fastener. (**) These wall angles should be similar in size and gauge to the wall angles typically used for acoustical ceiling grid, or any other suitable support device such as drywall plastic or metal corner bead.