Instructions / Assembly

10
6. Sealing SunSky:
a. Self-Adhesive XPE Sealing Tape (Expanded Cross-Linked Polyethylene): Resilient, closed cells,
self-adhesive foamed-polyethylene to be applied at sides & end-laps, on top of the overlapped area.
Cross-section dimensions may vary according to specific requirements. A typical XPE tape is 3/4" (20.0
mm) in width, 3/16" (5.0 mm) in thickness and comes with pressure sensitive adhesive on one side,
protected by silicone paper.
Butyl-Rubber or Expanding Sealing Tape: Elastomeric or Expanding Sealing Tape to be applied at
side & end-laps, on top of the overlapped area. Do not use mastic tape.
Install as follows: (See Page 9, Figures 15-18 and Page 11, Figures 20-22) Remove bottom protective
paper strip progressively, as installation advances. Apply carefully by hand.
• Single seal end-lap: Apply along fasteners’ center-line at the end-lap, following the profile shape.
• Double seal end-lap: Apply above and below fasteners’ center-line at end-lap, following the profile shape.
• Single seal side-lap of Sunsky over metal panel: Apply on top of center-line of side corrugations.
• Single seal side-lap of metal over Sunsky panel: Apply between to the down facing corrugation of the metal panel and the
Sunsky panel to prevent capillary action.
• With butyl-rubber only: Remove top protective paper strip before laying the overlapping panel. Lay the edge of lapping panel and
apply moderate hand pressure on the top panel along the side corrugation, to ensure a proper seal.
b. Top & Bottom Contoured End Closures: Top or bottom matching closure strips close the
opening above or below the panel and its corrugations.
Install as follows: Place the closure strip at the top or bottom edge fasteners’ center-line, and
insert the fasteners through said strip so it will be held firmly in place. A few dabs of silicone
could hold the strip temporarily in place until the top panel is laid and screws are inserted.
(Figures 23a, 23b, 24a & 24b)
• Location A: Where SunSky runs reach the top or bottom of roof or wall edges, or at the roof
ridge, the space left between the panel’s profile and the purlin, or girt, should be closed and
sealed with a contoured foam, polyethylene (XPE) closure strip matching
the panel profile.
• Location B: Where SunSky runs reach a top trim, or at a ridge-cap, a top closure strip should
be used at the top edge above the panel.
c. Silicone Sealants: Sealants, adhesives or bonding materials may be found to be incompatible, and can chemically attack the
panels, originate failure, and revoke any and all warranties. Please contact sealant manufacturer to insure it's compatibility
with polycarbonate prior to use. Palram Americas, Inc. will not be responsible for panel failure due to chemical incompatibility
with the sealant.
Top closure
Bottom closure
Top & Bottom End Closures
(SunSky 12")
Figure 19b
XPE (Expanded
Cross-Linked
Polyethylene)
Figure 19a