- Polycarbonate Selection: --------------Step #2 > Choose
Install System for Multiwall
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- -> 1st See Sheet
Cross Sections <.--.Poly
Specs & Tolerances <.--.Samples & Guide
- -Widths: 4 ft. easy roof
install, crate lighter. -Lengths: Sold in ft increments
4 - 48 ft.-
- 6
ft wide poly is difficult to install, expensive
ship.-Poly
Delivery Policy--6mm Note
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- Multiwall: - Range Greca Corrugated R-value is .9 and air can leak around corrugations..
- Pricing & Discounts - -Light Transmission, R-value, Weight, etc - -Technical
Info .-
- 6mm 2-wall replaces
1/4" glass, low cost, only poly u-profile. 48" & 72" wide - 1.6 R-value.
- 8mm* 2-Wall-mainly
a horticultural sheet. 48" & 72" wide - 1.7
R-value.
- 8mm
ThermoClear Plus 2-wall*-Clear
long life sheet. 48" & 72" wide - 1.7
R.
- 8mm
ThermoClear Plus "Softlite" 2-wall long life. 48" & 72" wide - 1.7
R-value..
- 8mm
ThermoClear Plus 3-wall*-Clear long life sheet. 48" & 72" wide - 2.0 R-value..
- 10mm 2-Wall - mainly
commercial, slightly stronger than 8mm. 48" & 72" wide -
1.8 R-value..
- 16mm 3-Wall for cold climates & architectural applications. 48" &
72" wide - 2.4 R-value..
- 16mm
ThermoClear Plus 3-wall*-Special long life sheet. 48" wide - 2.4 R-value..
- 25mm
ThClear Plus 6-Wall High insulation, long life! 48" wide - 3.7
R..
- 25mm
3-wall Clear - High light for solar & greenhouse. 48" wide - 3.0
R-value..
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- • Thickness effects
frame. Thicker = stiffer, for wider rafter placement or less
blocking.
- See Step #2 Choose Install System and charts, Load & Spacing, to determine thickness.
- Also - Thicker poly = higher insulation. Pay now for more insulation or later for heat.
- Clear for
hort &
solar, most
light
&
heat. White (opal)
& Bronze less
light &
heat. Poly
Colors,?'s
- Note: Bronze gets hot in sun, expands & contracts wildly and
will creak during temp. swings.
- * Indicates drip guard on interior surface of these sheets only, clear only. -
- 5° (1/12) Minimum Roof
Pitch for exterior rain & inner channel condensation
drainage.
- More slope (pitch) if pollen producing trees overhead. 3/12 to 4/12 (14-18%) slope best
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- Reload
Site