Polyetheline Film from International Greenhouse Company
1. Can be applied in either single layer or double layer.

2. Double poly film requires the installation of an inflator fan to provide air between the two layers.

3. Different grades are available and are rated as either one, two, three or four year film.

4. All high quality greenhouse film has a UV inhibitor co-extruded into the film. This will give you extra life before replacement is necessary.

5. Many films are also available with an anti-condensate coating to prevent condensate drip on the inside of the greenhouse during humid conditions.

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Corrugated Polycarbonate
1. This is a hard plastic glazing material which approaches glass in its clarity and light properties.  Transmission value of up to 92%.

2. Relatively inexpensive.  Requires no special extrusions for attachment.

3. Easily installed.  Lightweight and can be cut with utility knife or tin snips.

4. Available with anti-condensate coating on inside surface to reduce condensate dripping.

5. Virtually unbreakable which makes it extremely resistant to hail damage.

6. UV protected outer surface to provide long life under high sun conditions.

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Multi-Wall Polycarbonate


1. Tough impact strength for resistance to hail.

2. Provides insulation value similar to insulated glass.  Reduces heating costs.

3. UV protected outer surface to provide long life under high light conditions.

4. 10 year warranty against yellowing and loss of light transmission.

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Greenhouse Coverings Comparison
Covering Advantages Disadvantages Light Transmission "U" Factor Insulating Value "R" Estimated Lifetime Cost per Sq./Ft.**
Single
Polyethylene Film
  • Inexpensive
  • Easy to install
Short life 85 % 1.2 .83 1 to 4 years $.085
Double
Polyethylene Film
  • Inexpensive
  • Saves on heating costs
  • Easy to install
Short life 77% .70 1.43 1 to 4 years $.17
Corrugated
Polycarbonate
  • High transmittance
  • High impact resistance
Scratches easily 91% 1.2 .83
  • 15 plus years
  • 10 year warranty
$1.30
Glass
Double Strength
  • High transmittance
  • High UV resistance
  • Resists scratching
  • High cost
  • Difficult installation
  • Low impact resistance
  • High maintenance
88% 1.1 .91 25 plus years $3.00
Glass
Insulated
  • High transmittance
  • High UV resistance
  • Resists scratching
  • Very high cost
  • Difficult installation
  • Low impact resistance
78% .70 1.43 25 plus years $6.00
8mm
Twin Wall Polycarbonate
  • High impact resistance
  • Saves on heating costs
  • Requires glazing system to install
  • Scratches easily
80% .61 1.64
  • 15 plus years
  • 10 year warranty
$1.66
10mm
Twin Wall Polycarbonate
  • High impact resistance
  • Saves on heating costs
  • Requires glazing system to install
  • Scratches easily
80% .56 1.79
  • 15 plus years
  • 10 year warranty
$2.50
16mm
Triple Wall Polycarbonate
  • High impact resistance
  • Saves on heating costs
  • Requires glazing system to install
  • Scratches easily
78% .42 2.38
  • 15 plus years
  • 10 year warranty
$4.00

** Does not include cost of attaching accessories
*Quantity discounts may apply

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This page was last modified on 10/12/2006