How to choose Covering for your Greenhouses

Selection of the type of covering material to use on new construction or on renovation projects requires many practical considerations. The flexible and forming properties of the film simplify the covering process compared to rigid plastics or poly film. The attachment procedures for plastic film range from the simplicity of wooden nailer strips to the reusable aluminum extrusion inter-locking strips. The need for replacing the film every three to four years requires that the recovering process be rapid and easy. A means of recycling or disposing of spent film must also be considered.
PE film
Transparency is bit low, but it transmits wider range of U-red so that insulation effect is lower. Most popular for its prices and easily recyclable (Environment friendly)
EVA film
Developed to compensate the weak points of PE film, laminated with PE and PVA. It has higher insulation effect, condensation flows (Non-drip) and more durable in cold weather.
PVC film
Good at insulation effect and low in heat transmission. Good at impact, tensile and weathering, Popularly used in many countries. However, it tends to be stuck and not readily recyclable.
3-layer film
Developed for greenhouse uses to cover the weak points of PE films, using layers of PE with different additives for longer life and condensation flows, yet keeping the properties of low cost and recyclables (Environment friendly).
5-layer film
Recently developed multi-layers with different properties at each layer, boosting up transparency, insulation effect, weathering and condensation flows. Despite of high prices (3 times of 3-layers),