Installation Guide

Circular or Table Saw
A circular saw or table saw with a fine-tooth blade may be used to cut any sheet thickness. Before
cutting, secure the sheet to the work surface with a clamp and mark a straight line. If needed, pause
between cuts to allow the blade to cool. Too much heat may melt the sheet.
Note: Before installing, remove dust or debris from sheet surface with compressed air or a vacuum.
U-Profiles
In addition to taping the ends of the sheet, the bottom edge should be
enclosed with a polycarbonate U-Profile.
• Drill 1/8” weep holes every 12” in the U-prole to facilitate proper
condensation drainage.
• The ‘longer leg’ of the prole should be installed on the inside of
the sheet, facing the interior of the structure.
• If using an aluminum frame system, please follow manufacturer
recommended guidelines.
Note: Do not use PVC proles with multiwall sheets. PVC is highly incompatible with polycarbonate.
Taping
• Before taping, ensure all of the sheet’s edges are smooth and rounded. The sheet should be
free of any sharp points.
• On the top or high-end of the sheet, use aluminum (solid) tape to
seal o󰀨 edge. This tape will help prevent moisture and debris from
entering the utes.
• On the lower or bottom edge, use high-quality vent tape to seal
o󰀨 the edge. Vent tape not only prevents debris from entering the
utes but allow the utes to breathe. This air movement allows any
moisture to ‘vent’ out of the utes.
• Moisture condenses in the channels of the multiwall panels due to
di󰀨erences in exterior and interior temperature.
• Tape should be applied the long way, covering the open edges of
the sheets. The extra width of the tape should be wrapped onto the
faces of the sheets.
Note: Before applying tape, remove a couple of inches of protective lm from
the edges of the sheet and blow utes free of dust.
Edge Sealing
The ends of the sheet must be covered to prevent dust, debris, bugs, and excess moisture from entering
the utes. This can be done using sealing tapes and U-proles. The sheet’s utes (ribs or channels)
should be blown free of dust and debris before sealing.
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MULTIWALL POLYCARBONATE
Technical & Install Guide