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Polycarbonate Sheet ColorsTwin Wall Polycarbonate panels offer excellent insulation because of its ribbed configuration of the multi-walled sheets that trap air within the sheet, providing outstanding thermal insulation. Twin Wall Polycarbonate sheets are ideal for applications where specific light transmission is required.

This material has an impact strength 200 times greater than glass and 8 times greater than acrylic. It is 1/6 the weight of glass and 1/3 the weight of acrylic. Twin Wall Polycarbonate is compliant with most international standards for flame resistance, at very high temperatures, material melts but flames do not spread. This material will not crack or split when cut, sawn or drilled. Solar grade co-extruded layer protects the sheet against yellowing and surface wear from extruded UV exposure.

Twin Wall Polycarbonate sheets are designed for an endless range of glazing and roofing applications, for extreme weather conditions, and are known for their light-transmitting and reflective qualities. They are attractive, durable, easy to install and protect people and property inside a structure from the elements and from damaging UV radiation.

Polycarbonate Profiles

Our interconnecting polycarbonate profiles connect consecutive multi-wall sheets to cover large areas. They are UV-resistant, unobtrusive and offer secure snap-fit connections. Polycarbonate profiles are available in 12 foot and 24 foot lengths. Emco carries a variety of gasket clips, ECP 2G clips, H-Clips, H-Profiles,  and U-Shape Edge Profiles. Polycarbonate profiles are suitable for basic roofing applications and interior design.


  • Hurrigal Storm Panels
  • Polygal Polymatte
  • Polygal Standard Grade
  • Polygal Topgal
  • Selectogal (RFX)
  • Thermogal Super 32
  • Titan Sky

Twin Wall Polycarbonate FAQ's

What is the difference between “corrugated polycarbonate” and “multiwall polycarbonate” sheet profiles?

Corrugated polycarbonate is a single layer sheet characterized by either a wave or box-type profile, similar in design to metal roofing sheets with “peaks and valleys”. Multiwall polycarbonate is characterized by a rectangular hollow structure “flutes” that run the length of the sheet. Multiwall sheets are fabricated in many configurations such as twin-wall, three-wall, five-wall, and five-wall x-structure.

What is the better polycarbonate choice for a greenhouse: Multiwall or Corrugated Polycarbonate? Greenhouse Twinwall Sheets

Using multiwall or "twin wall" polycarbonate vs. corrugated polycarbonate varies greatly on what climate you're in, the style of greenhouse and if the greenhouse is used year-round. Both products are lightweight, UV protected, easy to work with and durable. Corrugated panels are less expensive but offer less heat retention. If more insulation is needed, multiwall panels are the preferred material. 

How do I clean polycarbonate sheets?

We recommend using warm water with a mild household detergent. This should be sufficient to clean the sheets. Wipe off any remaining dirt with a soft cloth and wash again. NEVER use a solvent-based cleaner. AVOID using sponges or brushes that can scratch the surface of the sheet.


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Technical Information

Stock Products Properties Applications Advantages

Stock Products

Sheet .125” – .5” 48”x96” CTS Clear, Grey, Bronze, Other colors available on special order

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density g/cm² D792 1.2
Mechanical PropertiesUnitsASTMResults
Tensile Strength psi D638 9,500
Tensile Modulus MPa D638 340000
Flexural Strength N/mm² D790 13,500
Flexural Modulus psi 3.2
Compressive Strength psi D695 2500
Hardness, Rockwell R D785 70
IZOD Impact Strength Notched kJ.m² D256 14
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion x10⁻⁵/K D256 6.6.
Heat Deflection Temp at 66 psi °F D648 6.6
Heat Deflection Temp at 264 psi °F 270
Electrical PropertiesUnitsASTMResults
Volume Resistivity ohm-cm D257 1×10-17


  • Greenhouses
  • Windows & skylights
  • POP Display
  • Signage
  • Sun rooms


  • Excellent weather resistance
  • Lightweight
  • Easy to install
  • Excellent insulation for energy savings
  • Fire rated
  • Virtually unbreakable
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