Multiwall Polycarbonate

Professional-grade multiwall polycarbonate sheets featuring hollow cellular construction that delivers exceptional thermal insulation with 200x the impact strength of glass. Perfect for greenhouse glazing, patio covers, and hurricane protection applications requiring both energy efficiency and virtually unbreakable durability.

Available in clear, bronze, opal, and hammered glass finishes with 6mm and 16mm thicknesses. All panels include UV protection on both sides and custom cut-to-size options. Ideal for spring greenhouse projects, pergola roofing, skylights, and architectural applications where superior insulation and light control are essential.

Multiwall Polycarbonate Sheets: Superior Insulation with 200x Glass Strength

Multiwall polycarbonate sheets feature revolutionary hollow-ribbed construction that delivers exceptional thermal insulation while maintaining 200x the impact strength of glass—making them the professional choice for greenhouse glazing, patio covers, hurricane protection, and applications requiring both energy efficiency and virtually unbreakable durability. Also known as twin wall or cellular polycarbonate, these panels excel in greenhouse construction, pergola roofing, skylights, and outdoor structures. Our comprehensive selection includes 6mm and 16mm thicknesses in clear, bronze, opal, and hammered glass finishes, available in full sheets (48"x96") and custom cut-to-size options.

Why Choose Multiwall Polycarbonate from ShapesPlastics?

Our multiwall polycarbonate panels feature UV protection on both sides to prevent yellowing and degradation, ensuring 15-20 year performance in outdoor applications. The hollow cellular structure provides R-values from 1.6 (6mm) to 2.5+ (16mm), reducing heating costs by 30-50% compared to single-pane glass. Whether you're building a greenhouse for year-round growing, installing patio cover roofing, preparing hurricane storm panels, or creating privacy screens, you're getting engineered panels that professionals specify for applications requiring both strength and thermal efficiency.

Fast turnaround: Standard sizes and cut-to-size orders typically ship within 1-2 business days. Our precision cutting service ensures proper flute orientation and clean edges, delivering panels ready for installation with appropriate sealing and profiles.

Common Applications for Multiwall Polycarbonate

Multiwall polycarbonate excels in outdoor and structural applications where insulation, impact resistance, and light control are priorities:

  • Greenhouse Glazing: Professional choice for hobby and commercial greenhouses, providing optimal light diffusion, superior insulation, and plant-safe UV filtering
  • Patio Covers & Pergolas: Durable roofing material offering weather protection with excellent light transmission, available in bronze tint for heat reduction
  • Hurricane Storm Panels: Florida HVHZ-certified protection panels that are 75% lighter than plywood, reusable, and provide visibility during storms
  • Skylights & Roof Panels: Energy-efficient alternative to glass with superior impact resistance and thermal insulation for residential and commercial buildings
  • Pool & Spa Enclosures: Weather-resistant panels that maintain clarity in humid conditions while providing insulation and wind protection
  • Privacy Screens: Opal and hammered glass finishes provide complete privacy while allowing natural light transmission for outdoor living spaces

How to Choose the Right Type and Thickness

Selecting the appropriate multiwall polycarbonate depends on your application's thermal, structural, and aesthetic requirements:

  • Clear 6mm: Most popular for greenhouses—optimal light transmission, good insulation (R-1.6), ideal for hobby growing and residential applications
  • Clear 16mm: Maximum insulation (R-2.5)—commercial greenhouses, harsh climates, premium patio covers, energy-efficient construction
  • Bronze 6mm/16mm: Heat reduction—patio covers in sunny climates, pergola roofing, applications requiring 40% solar heat gain reduction with elegant tint
  • Opal 6mm/16mm: Privacy applications—translucent panels for privacy screens, bathroom skylights, decorative installations with soft light diffusion
  • Hammered Glass 6mm: Upscale privacy—premium textured finish for bathroom applications, shower enclosures, decorative architectural elements

Our price match guarantee ensures competitive pricing on professional-grade multiwall polycarbonate. We stock panels year-round to meet spring greenhouse season demand and hurricane preparation requirements.

Planning a greenhouse, patio cover, or hurricane protection project? Our technical team can help you select the right panel type, thickness, and installation accessories for optimal performance and code compliance. Request a custom quote or call 844-970-0650 for project consultation.

Frequently Asked Questions

Common questions about multiwall polycarbonate

What thickness multiwall polycarbonate is best for greenhouses?
6mm is ideal for hobby greenhouses in mild climates, offering good insulation (R-1.6) and affordability. 16mm provides enhanced insulation (R-2.5) for year-round growing and areas with temperature extremes. Consider your local climate, heating costs, and growing season when choosing between these thicknesses.
How much energy can multiwall polycarbonate save compared to glass?
Multiwall polycarbonate can reduce heating costs by 30-50% compared to single-pane glass or plastic. The insulating air chambers provide R-values from 1.6 (6mm) to 2.5+ (16mm), significantly reducing heat loss. Many growers see payback on the material cost within 2-3 years through energy savings alone.
What's the difference between clear, bronze, and opal panels?
Clear provides maximum light transmission (80-90%) for optimal plant growth and bright spaces. Bronze reduces solar heat gain by up to 40% while adding an elegant warm tint, perfect for patio covers in sunny climates. Opal provides complete privacy while maintaining excellent light diffusion, ideal for privacy screens and bathroom applications.
How long does multiwall polycarbonate last in outdoor applications?
Quality UV-protected multiwall polycarbonate typically lasts 15-20 years in outdoor applications. The UV coating prevents yellowing and degradation from sun exposure, while the impact-resistant material won't crack or shatter like glass. Many manufacturers offer 10-year warranties against yellowing and loss of light transmission.
Are these panels suitable for hurricane protection?
Yes, our 16mm triwall hurricane storm panels are specifically engineered for storm protection and are Florida HVHZ (High Velocity Hurricane Zone) certified. They're 75% lighter than plywood, reusable season after season, and provide crystal-clear visibility during storms while offering superior impact resistance.
What installation accessories do I need for multiwall polycarbonate?
Installation requires specialized polycarbonate profiles including H-channels for joining panels, U-channels for edges, ridge caps for peaked installations, breather tape for top edges, and end closure tape for bottom edges. Panels must be installed with flutes running vertically for proper drainage.