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| DynaGlas Technical Specifications (Click here for fully formatted PDF version) |
| Dimensions | Dimensions Value - English (Metric) | ||
| Panel Width (gross) | 49.6" or 73.6" (1260 mm or 1870 mm) | ||
| Panel Widths (net after one corrugation overlap) | 48" or 72" (1218 mm or 1828 mm) | ||
| Panel Lengths (custom cut to specification) | 3' to 38' (914 mm to 11580 mm) | ||
| Corrugation/Wave Depth | 0.70" (17.8 mm) | ||
| Corrugation/Wave Pitch | 3" (76.2 mm) | ||
| Weight | 0.25 lbs./sq. ft. (1220 grams/m2) | ||
| Thickness | 0.03" (0.79 mm) | ||
| Number of Corrugations/Waves | 17 (49.6” panel) or 25 (73.6” panel) | ||
| Thermal | Value - English (Metric) | Test Method | |
| Optimal Service Temperature Range | - 40° F to +212° F (- 40° C to 100° C) | ||
| Maximum Service Temperature | 270° F (132° C) | ||
| Minimum Service Temperature | - 103° F (- 75° C) | ||
| Heat Deflection Temperature Load, 275° F (psi) | 275 | ASTM D-648 | |
| R-Factor and U-Factor and K-Value | R = .83 and U = 1.20 and (K = 5.8 W/m2 K) |
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| Coefficient of Linear Thermal Expansion | 3.6 x 10 -5 in./in./°F (6.5 x 10 -5 cm/cm/°C) |
ASTM D-696 | |
| Thermal Conductivity BTU/lb. (F°) | 1.4 | ASTM C-177 | |
| Mechanical | Value (English (Metric)) | Test Method | |
| Tensile Strength at Yield, 2 in./min. (psi) | 9,000 | ASTM D-638 | |
| Tensile Strength at Break, 2 in./min. (psi) | 9,500 | ASTM D-638 | |
| Elongation at Yield, 2 in./min. (%) | > 6 % | ASTM D-638 | |
| Elongation at Break, 2 in./min. (%) | > 80 % | ASTM D-638 | |
| Tensile Modulus, 0.04 in./min. (psi) | 340,000 | ASTM D-638 | |
| Flexural Modulus 0.052 in./min. (psi) | 310,000 | ASTM D-790 | |
| Flexural Strength at Yield, 0.052 in./min. (psi) | 13,500 | ASTM D790 | |
| Shear Strength (psi) | 6,180 | Factory Test | |
| Izod Impact Strength, Notched (73° F), ft./lb./in. | 18 | ASTM D-256 | |
| Rockwell Hardness, R Scale | 118 | ASTM D-785 | |
| Impact Resistance (falling dart) | 444 in. lbs. (50 joules) | ISO 6603/1 | |
| OSHA point-29 | Passed 200 lb. | CFR 1910.23 (e) (8) | |
| Uplift | Passed UL 90 | UL 580 | |
| Longitudinal Bending Radius | 16' (4.9 m) recommended; 13’ (4 m) min. | ||
| Optical | Value (English (Metric)) | Test Method | |
| Visible Light Transmission (PAR) | |||
| Clear | 90% (1% Diffusion/Haze) | ASTM D-1003 | |
| LDT (Light Diffusing Texture) | 90.5% (5% Diffusion/Haze) | ASTM D-1003 | |
| SolarSoft90™ | 90% (40% Diffusion/Haze) | ASTM D-1003 | |
| SolarSoft85™ | 85% (100% Diffusion/Haze) | ASTM D-1003 | |
| White/Opal (Translucent) | 42% (100% Diffusion/Haze) | ASTM D-1003 | |
| Solar Gray | 35% (4% Diffusion/Haze) | ASTM D-1003 | |
| UV Light Transmission | < 1 % | ASTM D-1003 | |
| UV Protection (all except UV2™ products) | Co-extruded, one side, exterior | Factory Test | |
| UV Protection (UV2™ products) | Co-Extruded, two sides, exteror & interior | Factory Test | |
| Yellowness Index | < 1 | ASTM D-1925 | |
| Solar Heat Gain, ft.2 (BTU/hr.) | |||
| Clear | 218 | ||
| Clear LDT | 215 | ||
| SolarSoft90™ | |||
| SolarSoft85™ | |||
| White-Opal | 128 | ||
| Gray | 120 | ||
| Other | Value (English (Metric)) | Test Method | |
| Flammability Rating | CC1 | ASTM D-635-91 | |
| Self Ignition | 1030° F (554° C) | UBC Standard 52-3 | |
| Flash Ignition | 840° F (449° C) | UBC Standard 52-3 | |
| Smoke Density (%) | 51 | ASTM D-2843 | |
| Smoke Developed | 47.0 | UL 723 (ASTM E-84) | |
| Flame Spread | 4.7 (Class A) | UL 723 (ASTM E-84) | |
| Condensation Control (all but "SE" products) | Built-in; proprietary (7-year warranty) | Factory Test | |
| Tolerances | Value (English (Metric)) | Test Method | |
| Thickness | 0.030" to 0.032" (0.77 mm to 0.83 mm) | Factory Test | |
| Length | 0 to + 0.5" (0 to +15 mm) | Factory Test | |
| Width | ± .4" (± 10 mm) | Factory Test | |
| Visual Defects (inclusions,bubbles, black specks, gel, etc.) | No visual defects are allowed by inspection from a distance of 1 meter. If defect is not visible using this method, it is not considered to be a defect. Surface abrasion may occur in transit. This is not considered a defect as DynaGlas is not intended for use in applications where “architectural optical clarity” is required. Further, this type of abrasion will not affect durability. | ||
| Additional Technical Considerations |
| Light Transmission | Recent test results utilizing a Licor LI-1800 Spectroradiometer confirm the above indicated light transmission values in an actual greenhouse environment. These tests also confirm that DynaGlas Plus, since it eliminates the millions of condensate droplets that would otherwise reflect sun light back into the atmosphere, transmits 30% more PAR light and 45% more infrared energy than corrugated polycarbonate panels without an effective condensate control mechanism. DynaGlas Plus’ condensate control feature has been proven to control condensation in full-scale commercial greenhouses for more than 10 years — without any loss of effectiveness! (click here for more detailed information about DynaGlas Plus' condensate control performance) |
| Compared to Polycarbonate Structured Sheet | One of the primary disadvantages of polycarbonate structured, or double-skinned, sheet is its relatively low level of light transmission, about 78% - 80% when new. Additionally, structured sheet requires rafter support every four or six feet, depending on panel width. This results in further light transmission loss of about 4%, resulting in a net light transmission factor of about 74%. And this value further diminishes as a result of eventual dust and/or algae build-up in the panel cavities. |
| Energy Efficiency (U-Factor) | The insulating characteristics of glazing materials is a complex subject, involving much more than simple U-factors. Typical U-factors for some glazing materials are: Fiberglass, 1.25; DynaGlas Plus, 1.20; Glass, 1.16; Structured Sheet, .64. However, a glass greenhouse suffers additional heat loss through conduction at the metal glazing rafters and through infiltration at glass laps, especially under windy conditions. It is important to note that DynaGlas Plus incorporates two important features which result in heat gain: (1) A built-in proprietary condensate control mechanism, and (2) a heat- and strength-enhancing surface contour which reduces the reflection of solar energy. DynaGlas Plus’ efficient condensate control mechanism eliminates the millions of droplets which would otherwise reflect away solar energy. Test results show that, during peak periods, DynaGlas Plus transmits up to 45% more heat energy than panels without an effective condensate control mechanism. DynaGlas Plus’ contoured shape reduces the problem of the reflection of solar energy on flat surfaces due to the low angle at which the sun’s rays strike these surfaces during early morning and evening hours, especially during the colder months. With DynaGlas Plus, many of these rays strike the panels perpendicular to the slanted vertical corrugation walls, facilitating their transmission into the greenhouse interior. Finally, the ideal greenhouse in terms of energy conservation is a DynaGlas Plus house fitted with a Climate Control Curtain System. While the installed cost of this combination is very comparable to that of structured sheet construction without a curtain, its insulating effect is far superior. Depending on the type of material selected, annual energy savings of up to 50% may be realized. And there is the additional important benefit of being able to shade the greenhouse, on a very selective basis, at no additional cost. |
| Panel Weight | Prospective users of corrugated polycarbonate panels should be aware that some brand panels weigh as little as .205 lbs/sq. ft. This results in a directly proportional reduction of about 20% in panel strength and rigidity. |
| UV Protection | Prospective users of corrugated polycarbonate panels should also be aware that some brand panels claim to have UV protection, but after being tested by our laboratories, reveal no presence of UV absorbing resins on the exterior surface(s) of the panel. It is recommended that you confirm the validity of the warranty and track record of the manufacturer who produced the panel before making any purchase. Without UV protection, polycarbonate with turn brown and opaque within 5 years if exposed to UV. |
| Compatibility with Chemicals, Fabrics, and Shade Compounds | For complete information about chemical compatibility considerations, click here. |
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