ThermaGlas

Multiwall Structured Polycarbonate Sheets

Applications

  • Greenhouses
  • Garden centers
  • Other agricultural covering applications

ThermaGlas® Multi-wall Polycarbonate Sheet is designed and engineered specifically for commercial greenhouse use. ThermaGlas products are available in 4-foot or 6-foot widths in clear, or with specially formulated colors and tints. ThermaGlas offers 99.5% UV protection.

The multiwall design and light weight of the sheet enables a reduction in the cost of the supporting structure. Shatterproof polycarbonate coupled with integrated UV resistant co-extruded layer yields long service periods backed up by a 10 year limited warranty.

The cellular multi-layer structure reduces heating costs in winter while minimizing excessive heat in summer. A special coating on the bottom side eliminates condensation dripping. ThermaGlas blocks ultraviolet rays that burn plants and living tissues, and transmits only beneficial radiation.

Thermaglas

Features

  • Superb thermal insulation—saves energy
  • Impact resistance—virtually unbreakable
  • Light weight
  • Weather and UV resistant
  • Low flammability (available with CC1 rating)
  • Easy to work with and install using ordinary tools
  • Rigid, yet capable of cold-forming to an arch
  • Wide service temperature range
  • 10-year limited warranty
  • Available in 47-1/4″ , 48″ , 71-1/4″ and 72″ widths

Availability

Dimensions
ProductThicknessRib SpacingStandard WidthsWeightLengthsColors
mmin.mmin.mmin.g/m2psfft.
Twin-Wall
45/326~1/41200
1220
1810
1830
2100(1)
47.25
48
71.25
72
82.68(1)
7770.1624' in stock. Available up to 39' (3)Clear
Opal
Bronze
Solar Control
61/46~1/413000.27
815000.35
1017000.35
Triple-Wall
8(1)17000.3524' in stock. Available up to 39' (2)Clear
Opal
Bronze
Solar Control
10(1)19900.41
16120047.2526700.55

12100mm (82.68″) wide panels not available in all thicknesses
2Please note that panels longer than 20′ are not recommended due to expansion and contractions and also may require a longer lead time and additional freight surcharges.

Technical Specifications

Dimensions
ProductThicknessRib SpacingStandard WidthsWeightLengthsColors
mmin.mmin.mmin.g/m2psfft.
Twin-Wall
45/326~1/41200
1220
1810
1830
2100(1)
47.25
48
71.25
72
82.68(1)
7770.1624' in stock. Available up to 39' (3)Clear
Opal
Bronze
Solar Control
61/46~1/413000.27
85/1610~3/815000.35
103/810~3/817000.35
Triple-Wall
815/1620~13/1617000.3524' in stock. Available up to 39' (2)Clear
Opal
Bronze
Solar Control
1013/820~13/1619900.41
165/820~13/16120047.2526700.55

12100mm (82.68″) wide panels not available in all thicknesses.
2 Please note that panels longer than 20′ are not recommended due to expansion and contractions and also may require a longer lead time and additional freight surcharges.

ThermalValueTest Method
No. of LayersPanel ThicknessR-FactorU-Factor
Twin-Wall
4mm1.490.67ASTM C-177
6mm1.620.62
8mm1.720.58
10mm1.890.53
Triple-Wall
8mm1.990.50
10mm2.080.47
16mm2.360.42
Optimal Service Temperature Range-40° F to +248° F (-40° C to ± 120° C)ASTM D-648
Maximum Service Temperature270° F (132° C)
Minimum Service Temperature- 103° F (-75° C)
Heat Deflection Temperature (Load: 264 PS)275° F
VICAT Softening Temperature (Load: 2.2 lb.)300° FASTM D-1525
Coefficient of Linear Thermal Expansion3.6 x 10(5)in./in.°FASTM D-696
Thermal Conductivity (BTU-in/hr-ft2- °F)1.45ASTM C-177

Mechanical
Tensile Strength At Yield (0.4 in./min.)9,400 psiASTM D-638
Tensile Strength At Break (0.4 in./min.)8,800 psi
Elongation At Yield (0.4 in./min.)6%
Elongation At Break (0.4 in./min.)> 90%
Tensile Modulus of Elasticity (0.4 in./min.)350,000 psi
Flexural Modulus (0.052 in./min.)380,000 psiASTM D-790
Flexural Strength At Yield14,500 psiASTM D-790
Rockwell Hardness118 R ScaleASTM D-785
Density75 lb/ft(3)ASTM D-792
Specific Gravity1.2 g/ccASTM D-792

Optical
PropertyTest MethodPanel ThicknessClearWhite OpalGray
Twin WallTriple WallTwin WallTriple WallTwin WallTriple Wall
PAR Light Transmission (see next page for more information about PAR Light)ASTM D-10034mm82%3035%
6mm80%2035%
8mm80%76%45%45%35%35%
10mm79%76%30%45%35%35%
16mm76%35%35%
Refractive IndexASTM D-542All thicknesses1.59
Yellowness IndexASTM D-1925All thicknesses< 1

Fire / Ignition / SmokeValueTest Method
Flammability RatingCC1 †ASTM D-635-74
Self Ignition1000°FASTM D1929
Flash Ignition930°FASTM D1929
Smoke Density (%)8.6%ASTM D2843
Smoke Developed350 (Class A)ASTM E-84
Flame Spread15 (Class A)ASTM E-84
Vertical BurningUL94-5VAUL94-1998

ThermaGlas Solar Soft 80

Features and Benefits

  • Superb thermal insulation—saves energy
  • Impact resistance—virtually unbreakable
  • Light weight
  • Weather and UV resistant
  • Low flammability (available with CC1 rating)
  • Easy to work with and install using ordinary tools
  • Rigid, yet capable of cold-forming to an arch
  • Wide service temperature range
  • 10-year limited warranty
  • Available in 47-1/4″ , 48″ , 71-1/4″ and 72″ widths

SolarSoft diffuses light that is transmitted through the sheet, while transmitting a high level of PAR light (80%).  The mechanical properties of ThermaGlas® SolarSoft can be considered the same as other types of ThermaGlas, such as clear and White/Opal.

Diffusing the sun’s direct radiation has been found to be beneficial for plants.  With ThermaGlas SolarSoft, plants or flowers get very high levels of PAR light, but direct radiation of infrared is removed, which helps to reduce leaf temperature and plant burning.  Furthermore, light penetrates deeper into the canopy, improving plant growth.

SolarSoft can also be beneficial for humans.  A person standing under ThermaGlas SolarSoft, while receiving almost the same amount of light as with Clear, will not feel harsh heat-giving radiation from the sun, and therefore will feel much more comfortable.

The SolarSoft resin component is UV protected with the same co-extrusion protection as all other ThermaGlas products.  (99.9% UV protection).

ThermaGlas Multi-wall Polycarbonate Sheet is designed and engineered specifically for commercial greenhouse use. ThermaGlas products are available in 4-foot or 6-foot widths in clear, or with specially formulated colors and tints. ThermaGlas offers 99.5% UV protection.  The multiwall design and light weight of the sheet enables a reduction  in the cost of the supporting structure. Shatterproof polycarbonate coupled with integrated UV resistant co-extruded layer yields long service periods backed up by a 10 year limited warranty.

The cellular multi-layer structure reduces heating costs in winter while minimizing excessive heat in summer. A special coating on the bottom side eliminates condensation dripping. ThermaGlas blocks ultraviolet rays that burn plants and living tissues, and transmits only beneficial radiation.

Table of Typical Properties

See the ThermaGlas Technical and Installation Guide for additional specifications and details.

Other Properties
Twin-Wall ProfileSheet ThicknessWeightMinimum Radius for Cold Bending
8mm1500 g/m(2)1.4m
5/16".31 lb/sf55"
Standard WidthsOptional WidthsStandard Length†
48",72"47.25",71.25"24'

*Minimum purchase requirements may apply
Lengths up to 48′ are available with minimum purchase requirements. Installed lengths are recommended to be 24′ or less.

 Type of ThermaGlas and Pigmentation
PropertyClearSolarSoft 80White/Opal
Light Transmission80%80%45%
Diffusion (Haze)22%95%100%
Light Transmission Characteristics of ThermaGlas Products
ClearSolarSoft 80White/Opal
80% PAR Light Transmission
22% Diffusion (Haze)
80% PAR Light Transmission
95% Diffusion (Haze)
45% PAR Light Transmission
100% Diffusion (Haze)

Technical Specifications

Dimensions
165/820~13/16120047.2526700.55
ProductThicknessRib SpacingStandard WidthsWeightLengthsColors
mmin.mmin.mmin.g/m2psfft.
Twin-Wall
45/326~1/41200
1220
1810
1830
2100(1)
47.25
48
71.25
72
82.68(1)
7770.1624' in stock. Available up to 39' (3)Clear
Opal
Bronze
Solar Control
61/46~1/413000.27
85/1610~3/815000.35
103/810~3/817000.35
Triple-Wall
8(1)5/1620~13/1617000.3524' in stock. Available up to 39' (2)Clear
Opal
Bronze
Solar Control
10(1)3/820~13/1619900.41

1 2100mm (82.68″) wide panels not available in all thicknesses.

2 Please note that panels longer than 20′ are not recommended due to expansion and contractions and also may require a longer lead time and additional freight surcharges.

ThermalTest Method
No. of LayersPanel ThicknessR-FactorU-Factor
Twin-Wall
4mm1.490.67ASTM C-177
6mm1.620.62
8mm1.720.58
10mm1.890.53
Triple-Wall
8mm1.990.50
10mm2.080.47
16mm2.360.42
Optimal Service Temperature Range-40° F to +248° F (-40° C to ± 120° C)ASTM D-648
Maximum Service Temperature270° F (132° C)
Minimum Service Temperature-103° F (-75° C)
Heat Deflection Temperature (Load: 264 PS)275° F
VICAT Softening Temperature (Load: 2.2 lb.)300° FASTM D-1525
Coefficient of Linear Thermal Expansion3.6x 10(5) in./in.°FASTM D-696
Thermal Conductivity (BTU-in/hr-ft(2)- °F)1.45ASTM C-177

Mechanical
Tensile Strength At Yield (0.4 in./min.)9,400 psiASTM D-638
Tensile Strength At Break (0.4 in./min.)8,800 psi
Elongation At Yield (0.4 in./min.)6%
Elongation At Break (0.4 in./min.)> 90%
Tensile Modulus (0.052 in./min.)350,000 psi
Flexural Modulus (0.052 in./min.)380,000 psiASTM D-790
Flexural Strength At Yield14,500 psiASTM D-790
Rockwell Hardness118 R ScaleASTM D-785
Density75 lb/ft(3)ASTM D-792
Specific Gravity 1.2 g/ccASTM D-792

Optical
PropertyTest MethodPanel ThicknessClearWhite OpalGray
Twin WallTriple WallTwin WallTriple WallTwin WallTriple Wall
PAR Light Transmission (see next page for more information about PAR light)ASTM D-10034mm82%3035%
6mm80%2035%
8mm80%76%45%45%35%35%
10mm79%76%30%45%35%35%
16mm76%35%35%
Refractive IndexASTM D-542All thicknesses1.59
Yellowness IndexASTM D-1925All thicknesses< 1

Fire / Ignition / SmokeValueTest Method
Flammability RatingCC1 †ASTM D-635-74
Self Ignition1000°FASTM D1929
Flash Ignition930°FASTM D1929
Smoke Density (%)8.6%ASTM D2843
Smoke Developed350 (Class A)ASTM E-84
Flame Spread15 (Class A)ASTM E-84
Vertical BurningUL94-5VAUL94-1998