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Polyethylene (poly) and polycarbonate coverings are commonly used in greenhouse construction because they offer specific benefits that support plant growth and greenhouse efficiency.

Light Transmission: 

• Both poly and polycarbonate coverings allow sunlight to penetrate the greenhouse, providing plants with the essential light energy they need for photosynthesis. These materials can be designed to transmit different levels of light, allowing you to customize the light conditions to suit the specific requirements of your crops.

Diffusion of Light: 

• Polyethylene films diffuse light, spreading it more evenly throughout the greenhouse. This reduces the formation of shadows and hotspots, promoting uniform growth and preventing sunburn on plant surfaces. Polycarbonate sheets also diffuse light, though to a lesser extent compared to polyethylene.

Insulation: 

• Poly and polycarbonate have insulating properties that help maintain a more stable temperature inside the greenhouse. They reduce heat loss during cooler nights and can provide some level of thermal insulation during the winter, extending the growing season.

UV Protection: 

• Both materials can be treated to block or filter out a portion of harmful ultraviolet (UV) radiation. This protection is essential to prevent damage to plants, such as leaf scorching or the development of diseases caused by excessive UV exposure.

Durability: 

• Polycarbonate sheets are highly durable and resistant to impact and extreme weather conditions. They can withstand hail, heavy snow loads, and strong winds, providing long-term protection for the greenhouse structure and its contents. Polyethylene films are less durable than polycarbonate but are still a cost-effective option for many growers.

Energy Efficiency: 

• Poly and polycarbonate coverings contribute to energy efficiency in greenhouses. They allow for natural light, reducing the need for artificial lighting during the day. Additionally, their insulation properties can help reduce heating costs during colder seasons.

Weight and Installation: 

• Polyethylene films are lightweight and relatively easy to install, making them a practical choice for smaller and simpler greenhouse structures. Polycarbonate sheets are heavier but offer greater strength and require less frequent replacement, making them suitable for larger or more permanent greenhouse installations.

Light Diffusion Control: 

• You can select specific types of poly and polycarbonate materials with different levels of light diffusion. This allows you to tailor the covering to the light requirements of various crops, optimizing growth conditions.

When you reach out to us at CRS we will help you make the right choice in materials based on your crops, climate, budget, size, and design of your greenhouse structure.