Q: Why should I install multiwall polycarbonate panels in a vertical direction?
A: Moisture can gather in the extruded ribs or flutes of a multiwall sheet. Vertical orientation allows for water accumulation to drain. When used for a roof application, the slope should be at least 5 to 10 degrees, never level. Remember to drill weep holes if you seal the end of the panel with a U-channel.
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