Installation Comments

1. Single Panel Run Installation:
   The length (long side) outermost crests of a SunSky panel should lap over matching adjacent crests of metal panels on both sides.
   
   
2. Multi-Panel Run Installation:
   The middle SunSky panels should be installed with the regular under/over length overlap (the short crest edge on top of a longer one).
   The outermost SunSky panels on both length sides will lap over the adjacent matching metal panels, as in a single panel run, unless designed otherwise.
   
   Attention!
   In single panel run (or at both length sides of a multi-panel run), the metal panel/s installed up the slope over the skylight should (if that alternative is chosen) also be length overlapping on both sides, same as the SunSky panel/s down the slope.
   
   
3. Side Lap Support:
   At side-laps of SunSky on SunSky, or metal on SunSky we recommend installation of length support profiles (closures), made of steel or wood, for better sealing and more rigid cladding installation.
   
   
4. Suntuf Inc. strongly recommends the use of SunSky for wall lights.
   

Fastening & Sealing

1. Use of recommended fasteners and washers, meticulously installed according to our instructions, is essential for full performance values of installed SunSky.
   
   
2. Recommended Fasteners & Washers Positioning for SunSky 9" Panel:
   For standard installation 1/4-14 x 1-1/2" Type 3 drill point self drilling fastener assembled with 25mm Suntuf Inc. special washer/gasket. For severely corrosive environment - same fastener, made of 304 stainless steel. These fasteners should be used for mid-field valley installation and side-lap stitching over metal side panels. For fastening to support profiles and side stitching-to metal panels or other SunSky panels-HWH #14-10 x 1-1/2" Type S drill point self tapping fastener assembled with 25 mm Suntuf special washer/gasket.
   
   
3. Driving Fasteners:

   a) Drive fasteners perpendicular (vertical) to the panel's surface and tighten moderately. The fastener head and washer/gasket should sit snugly and fully on the panel's face, without squeezing the gasket and distorting the washer.
   
   b) Overtightening will distort the washer, panel and ruin the gasket, causing leakage and panel damage, resulting from the undue internal stresses.
   
   c) Tilted fastener insertion will deform the washer, damage the gasket, cause leakage and originate undue stresses on the panel eventually leading to failure
   
   d) Tighten fasteners by hand or by an adjustable torque power-screw driver.
   
   Never use impact wrench/driver for fastening SunSky panels.

Sealing SunSky:

1. Elastomeric butyl-rubber sealing strips, about 3/32" - 1/8" thick and 1/2" wide should be applied on top of the overlapped areas. Install as follows:

• Along the center line of the fasteners at the end-lap or near it (with double seals) and on side lap corrugations of the adjoining metal panels (single panel run).
  
  
• The successive SunSky panel side lap (multi-panel runs).
  
  
• The crests and valleys of the successive end/weather lap of the metal or SunSky panel.

2. Top and Bottom Contoured End Closures:
   Top or bottom matching closure strip is used to close the clearance above or below the panel.

• Where SunSky runs reach the top or bottom roof edge, or at the roof ridge, the space between the panel and edge purlin should be closed and sealed with a contoured foam polyethylene (XPE) closure strip, matching the panel profile.
  
  
• Where SunSky runs reach the top trim or flat ridge cap, a top closure strip should be used at the top edge above the panel.
  
  
• Contoured end-closures may also be made out of wood, when it's worthwhile.