How to choose a film for a greenhouse. Recommendations.
11 June 2019 15:42
// Useful information about our products
Types and features of films for greenhouses and hothouses. How to choose exactly what you need.
What are the films for greenhouses and hothouses..
What to pay attention to when choosing.
The most common option for covering a greenhouse is film. There is a great variety of films for greenhouses on the market. We will not consider their entire assortment. Many more or less competent materials have been written on this subject, easily found in garden publications and on the Internet. Let's list the main points to pay attention to when choosing greenhouse and greenhouse films.What material is the greenhouse film made of?
It matters what material the greenhouse film is made of. The most common is polyethylene film. Cheap polyethylene films, sometimes made from recycled raw materials without any additives, will not last even one season. Our gardeners rarely buy such films. Obviously, the film's cheapness costs a lot of money afterward, when we have to repair the film, which breaks into pieces.There are different ways to increase the durability of polyethylene film. Special additives are added to the film to protect it from destruction (thermal and light stabilizers). As a rule, the manufacturer indicates the period for which the film is designed - 1, 2, 3 years. Some films have a service life of 7 years or more. They are made of other polymers, but they must differ from conventional polyethylene in properties for the buyer. Of course, a linear meter of perennial film costs more in the store. Still, considering that it will not have to be replaced for several years, it ends up being cheaper. Service life is not the only thing to pay attention to when choosing.
The thickness of the film for greenhouses and hothouses.
The thickness of the film (it is important that it corresponds to the label) also matters. And here it is not so unambiguous - the thicker, the stronger. The film can be thick 120 microns and serve for 7 years in the hothouse, as already mentioned above multi-year copolymer films, and can be thick 200 microns and destroy in a season, if no special additives are introduced. Unfortunately, by eye, you can not determine the presence of additives, so we can only advise choosing a proven manufacturer. The recommended thickness of the film for greenhouses from arcs - 100-120 microns; for greenhouses with a roof "house" and height to 2,5 m at a ridge - 120-150 microns; for arched greenhouses and greenhouses above 2,5 m at a ridge - 150-180 microns; for industrial greenhouses - 180-200 microns.Special properties of greenhouse and hothouse films.
Films can have special properties that you choose according to your preference and requirements.Hydrophilicity is the ability of the film surface to attract water, condensate formed in the greenhouse. That is, in a greenhouse with a hydrophilic film, there will be no drips, condensation will flow down the film to the ground. This is good for both the plants and the person working in the greenhouse.
Heat retention is the ability of the film to retain heat. A greenhouse with a heat retention film creates a microclimate that is favorable for plants because there is almost no difference between day and night temperatures, and it also better protects plants during a return frost. Under a heat-retaining film, it is 3 to 4 degrees warmer at night and not hotter during the day. Due to the absence of drastic temperature changes in the greenhouse, fog, which adversely affects the growth and development of greenhouse plants, does not form in the greenhouse.
Pay attention to the spectrum of light that the greenhouse covers allow in . The film must be able to transmit ultraviolet light, otherwise, bumblebees will not be able to navigate in the greenhouse and pollinate the plants. Ultraviolet is also important for hardening plants. If it is lacking plants significantly outgrow their counterparts, but, according to the results of studies by agronomists, such plants are much more susceptible to any diseases.
There are also films with the addition of "anti-mold" and chemically resistant to pesticides and others.
Multilayer films for greenhouses.
Multilayer films for greenhouses, which used to be available only to owners of industrial greenhouses since they were only produced abroad and only in large widths (12 meters or more), are becoming available to dacha owners. Multilayer films are now also made in our country, it is possible to buy them not by tons, but by more modest volumes. They have many advantages. It is possible to introduce additives only in the layer where they are needed during production, thus saving money and providing the buyer with a quality product at a lower price. In addition, multilayer films with the same thickness are much stronger than single-layer films.We hope you find our recommendations helpful! Have a great harvest, everyone!
And with a range of our greenhouse and hothouse films you can read by clicking here.
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