Horticultural
Multiwall Polycarbonate for Greenhouses
There are many options available for covering greenhouses but multiwall polycarbonate is by far becoming the covering of choice for professional growers. Strength, durability, high “R” value, light diffusion, UV blockers, multiple thicknesses and glazing options all make polycarbonate a superior choice over glass, PE film, cloth or fiberglass. With thicknesses ranging from 4-25mm and with a variety of wall configurations, Gallina Policarb® can provide material to the hobbyist as well as the institutional grower. Gallina’s unique anti-fog coating also takes away the concerns of condensation dripping from the ceiling.
View PDF CatalogPerformance
Plants respond best to diffused light. Multiwall panels in double or triple wall configuration help diffuse sunlight to prevent burning. While our Policarb® 8mm twin-wall with anti-fog is by far the product of choice, many greenhouse manufacturers are finding that the increased R-value attained with our Policarb® 8mm triple-wall product is superior in colder climates, allowing a longer growing season. Institutional growers, universities and some of our more Northern customers commonly choose the Policarb® 16mm triple-wall product due to its high R-value and ability to withstand tremendous loading.
Production Standard |
||||||||
| Thickness (mm) |
4 |
4.5 |
6 |
8 |
10 |
8 |
10 |
16 |
| Thickness (in) |
5/32 |
3/16 |
1/4 |
5/16 |
3/8 |
5/16 |
3/8 |
5/8 |
| Structure | 2 LAYERS | 3 LAYERS | ||||||
| Consult GallinaUSA for availability | ||||||||
| Width (in) | 47.25″, 48″, 71.25″, 72″ plus custom widths available upon request. | |||||||
| Length (ft) | Made in the USA products limited only by transportation constraints | |||||||
| Weight (lbs/sf) |
0.164 |
0.205 |
0.266 |
0.307 |
0.348 |
0.348 |
0.430 |
0.553 |
| R-Factor |
1.471 |
1.471 |
1.639 |
1.724 |
1.923 |
1.923 |
2.128 |
2.500 |
| U-Value |
0.680 |
0.680 |
0.610 |
0.580 |
0.520 |
0.520 |
0.470 |
0.400 |
| Light Transmission % | ||||||||
| Clear |
85 |
84 |
80 |
81 |
82 |
82 |
74 |
74 |
Appearance
For many people, the desire to see in and out of the greenhouse is important. In this case, polycarbonate greenhouse covering is the best option because it is the most transparent. It is important to note that polycarbonate does wear over time, so if you want your greenhouse to remain looking like new it needs to be washed with a soft cloth periodically and kept clear of anything that may cause scratches.
Longevity and Warranty
Gallina USA’s Policarb® comes standard with UV inhibitors blocking up 99% of harmful UV rays. Our ten year warranty against weathering is in strict accordance with ASTM standard D-1925. In addition, our entire Policarb® product is third-party tested against hail impact in accordance with ASTM E-822. Weather conditions won’t be an issue when choosing a high quality Gallina multiwall polycarbonate panel for your greenhouse covering needs. Click here to download our warranty.
Gallina Policarb® Panels
