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Manufacturer
Macrolux
Product Title
8mm Twinwall Polycarbonate Panel -Anti-Drip
Features
Anti Drip Coating,
UV protection (prevents yellowing of panels)
R-value
R 1.73
Warranty
15 Years
Greenhouse | Lean-To | Pergola
1
2
3
4
5
What are you covering?
Select your primary structure, then add endwalls if needed.
Greenhouse roof + sidewall
Panels run from ground up sidewall and over the roof
Continuous
Split at eave
Lean-to
Single slope roof + front wall, attached to existing building
Pergola / patio cover
Flat overhead panel cover on posts
Add-on
Add endwalls
Add 1 or 2 walls to your structure
Bundle and save on shipping!
Extrusions and Fasteners
8mm Twinwall Polycarbonate Panel -Anti-Drip
Macrolux
8mm Twinwall Polycarbonate Panel -Anti-Drip
- Price
- $51.43—$231.43
Polycarbonate Extrusions for Twinwall
Macrolux
Polycarbonate Extrusions for Twinwall
- Price
- $16.90—$42.35
Neoprene Screw 1 1/2" x 5/16" Twinwall (100ct)
Hortitech
Neoprene Screw 1 1/2" x 5/16" Twinwall (100ct)
- Price
- $45
150' Tape Kit For Twin Wall Polycarbonate
Macrolux
150' Tape Kit For Twin Wall Polycarbonate
- Price
- $95
EPDM Spacer for Twin Wall Polycarbonate- Bag of 100
Hortitech
EPDM Spacer for Twin Wall Polycarbonate- Bag of 100
- Price
- $38
Polycarbonate Specifications
Common Applications
Greenhouses
Garden Sheds
Lean-To
Pool & Patio Covers
Walkway Covers
Carports
Pergolas
Sunrooms
Features & Benefits
✓ Lightweight construction
✓ 80% light transmission (clear)
✓ Co-extruded UV protection layer
✓ Impact & damage resistant
✓ Self-extinguishing — ASTM E84 Class A
✓ Thermal insulation — R-value 1.73
✓ Max continuous service temp 248°F
✓ Contributes to LEED credits
✓ Anti-drip (No-Drip) coating
✓ 15-year limited warranty
Energy-saving performance helps offset heating and cooling costs year-round in greenhouse and commercial glazing applications.
Structural Considerations
Wind and snow loads must be absorbed by a suitable supporting structure. Maximum deflection should not exceed 5% of the shorter panel dimension.
Max Purlin Spacing — 4' Wide Sheet (1" deflection limit)
| Thickness | 15 lbs/ft² | 30 lbs/ft² | 45 lbs/ft² | 60 lbs/ft² |
|---|---|---|---|---|
| 6mm | 31" | 24" | 12" | — |
| 8mm ← this product | 38" | 28" | 18" | 10" |
| 10mm | 45" | 34" | 28" | 24" |
| 16mm | 75" | 43" | 36" | 30" |
Max Purlin Spacing — 6' Wide Sheet (1" deflection limit)
| Thickness | 15 lbs/ft² | 30 lbs/ft² | 45 lbs/ft² | 60 lbs/ft² |
|---|---|---|---|---|
| 6mm | 25" | 9" | — | — |
| 8mm ← this product | 36" | 26" | 12" | — |
| 10mm | 44" | 33" | 27" | 20" |
| 16mm | 60" | 40" | 36" | 30" |
Fire Ratings
| Standard | Classification |
|---|---|
| ASTM E84 | Class A (NFPA / UBC) |
| ASTM D635 | Class CC1 |
| ASTM D2843 | Low Smoke Density |
| ASTM D1929 | Self-ignition temp > 650°F |
Frame clearance must account for thermal expansion. Coefficient: 3.6 × 10⁻⁵ in/ft°F — polycarbonate expands more than glass, steel, or aluminum.
Handling & Installation
⚠ Remove UV-protective masking film only immediately after installation — not before, and never after prolonged sun exposure.
Installation
- Orient cells vertically — prevents condensation buildup
- Use aluminum or PC profiles to attach — no direct drilling
- Never use PVC profiles with polycarbonate
- Seal all cut edges with aluminum tape immediately
Storage & Cutting
- Store sheets horizontally — never lean against wall
- Do not walk on panels — use wood plank platforms
- Cut with table saw, fixed-knife cutter, or circular saw
Cleaning & Maintenance
✓ Recommended
- Non-abrasive, solvent-free neutral soap + water
- Pressure washer rinse
- Soft cloth or sponge for remaining dirt
✗ Never Use
- Gasoline, benzene, or acetone
- Abrasive cleaners or powders
- Stiff-bristle brushes or scrubbing pads
⚠ Solvents and abrasives permanently damage the UV coating and will void the warranty.
Bonding & Adhesives
Use a silicone-based sealant — Dow Corning 791 or equivalent is recommended. Avoid any adhesive containing solvents that can degrade polycarbonate.
✓ Compatible
- Neutral-cure silicone (preferred)
- Dow Corning 791 or equivalent
- Structural silicone — PC-rated
✗ Avoid
- Acetoxy-cure silicones
- Solvent-based adhesives or caulks
- Polyurethane without PC rating
Gallery
optimize your airflow
Greenhouse ventilation
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Shutter Motor Kit for 12" - 60" J&D Shutters
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Aluminum Shutter - Motor Sold Separately (Carrier Shipping)
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Greenhouse Double Poly Air Inflation Motor Parts
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Greenhouse Double Poly Air Inflation Motor Parts
- Price
- $9.40—$133.78
Evaporative Cooling System (Wet Wall Kit)
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Evaporative Cooling System (Wet Wall Kit)
- Price
- $2,946.42—$5,052.33
Aluminum Shutter - Motor Sold Separately (Freight Shipping)
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Aluminum Shutter - Motor Sold Separately (Freight Shipping)
- Price
- $187.71—$785.14
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