Film greenhouses, despite their simplicity, are very popular in gardening. They are cheaper than polycarbonate and glass varieties, and easy to use. But if the film for greenhouses is chosen incorrectly, it will not last long. Films are of different types, thickness, density. And although outwardly they may be similar to each other, in fact, each species has its own unique qualities and characteristics.
Features film coatings
The choice of film coatings in stores is huge and sometimes it is difficult to decide which film is of high quality and which one will not last for a season. There are a number of factors that a quality film for greenhouses must comply with.
- acceptable price;
- ease of use;
- reliable UV protection;
- sufficient density and thickness.
It should be borne in mind that there are films and weaknesses. Depending on the type, the material will have certain disadvantages, so before choosing a film for greenhouses, you should become familiar with the types, their features and disadvantages.
Photo of the perennial greenhouse film "Svetlitsa"
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There are many types of films and they differ according to different criteria. There are films:
- light stabilized;
- bilayer and others.
As you can see, a lot of species. In addition, films for greenhouses differ in density and thickness, as well as color, which is important to consider. Descriptions of some of the most popular films for greenhouses are discussed below.
Stock Foto Plastic film for greenhouses
Polyethylene film for greenhouses
The main advantage of plastic film - low cost. In both directions, it allows up to 80% of heat. With proper fastening of such a film on the greenhouse frame, it will last one season. On sale you can find rolls with a width of 1-3.5 meters, in the form of a sleeve or single-layer.
- plastic film is not long;
- does not tolerate low temperatures, so it needs to be removed for the winter;
- collapses under the constant influence of the sun and wind;
- easy to tear.
Despite the fact that the plastic film quickly breaks and deteriorates, it is often purchased for greenhouses due to its low cost. In addition, she looks beautiful and very easy to wash.
Stock Foto Reinforced film for greenhouses
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Reinforcing film is different in that it has a kind of frame made of fiberglass. It is made by pressing, stretching, twisting the material. The result is a fairly durable, reinforcing film for greenhouses, convenient in operation, with a thickness of 0.3-0.35 mm. Greenhouses and greenhouses with such a coating are distinguished by their strength, resistance to winds, short-term lowering of temperatures to -5 degrees, hail, snow, rain. The term of operation is 3-7 years, depending on the manufacturer.
A nice bonus of such a film is that it is easy to repair. Small holes can be sealed with simple tape, and large holes are difficult to make, since, unlike a plastic film, this material does not “spread out”.
- high price;
- low light transmission;
- dirt from the relief coating is poorly washed off.
PVC film for greenhouses
PVC film is the best option for a greenhouse or greenhouse. It is durable, flexible, convenient to use. The term of operation is 2-5 years, depending on the climate. It can be of different colors, and with certain qualities (during the production, various additional ingredients are often added to it). PVC film transmits up to 95% of light, 85% of ultraviolet radiation and retains about 96% of infrared radiation.
- this film is 2 times more expensive than simple polyethylene;
- attracts dry particles, which however are not difficult to wash off;
- resistance to frost up to -17 degrees.
Photo PVC film for greenhousesInteresting! For greenhouses, it is recommended to purchase a film labeled with LDPE grade 1. Film 2 varieties are not as strong, quickly torn and deformed!
Other types of films for greenhouses
When certain ingredients are added to the polyethylene mass, an improved material is obtained with certain features.
- Light transforming the film is capable of converting even hard ultraviolet to the infrared spectrum, which has a positive effect on productivity. The cost of such a film is higher than normal. And in order to understand that this is really light-converting material, it’s still worth it in the store to enlighten with a UV lamp. If the film quality, it will change the color of light to red.
- Heat retaining the variety has a whitish matte finish. It badly lets in heat, therefore in a greenhouse it is always hotter than in a greenhouse covered with a simple film. The operating time is about 4 years, but only with hydrophilic and antistatic characteristics.
- Light stabilized The film is resistant to increased sun exposure. Its operating time increased by 2-3 times at this expense, but the cost is also high. The color ranges from yellow to pink.
A light-reforming film is capable of converting even hard ultraviolet to the infrared spectrum.
- Bubble the film resembles the material in which it is packed in transit. This film easily passes light, retains heat. But keep in mind that it is not durable, it easily deteriorates, breaks. Recommended for greenhouses and small greenhouses.
- Foamed materials contain foamed and monolithic film layers that transmit up to 70% of light. The coating keeps the temperature well and is recommended for greenhouses for growing seedlings or greenery.
- Ethylene vinyl acetate copolymer the film is quite durable and serves about 3 years. It transmits about 92% of the light, keeps the heat inside, is resistant to frost and heat, hydrophilic. Its main drawback - can lead to overheating of plants. So inside the greenhouse covered with this film a thermometer is put on a mandatory basis, and airing is carried out in a timely manner.
All these types of films are available in wide sale. They can be purchased in any quantity, but it is important to carefully study the characteristics before purchasing, as many types of films are very similar in appearance and easily confused. It is easiest to distinguish them by the characteristics indicated on the package.
Film thickness for greenhouses
What thickness is chosen film for greenhouses? It all depends on the extent to which it will be affected by environmental factors. Of course, the thicker and stronger the film, the longer it will last, however, in shops often one density is given out for another. In this case, in order not to be mistaken, you should pay attention to its characteristics and weight. The higher the thickness, the greater the mass. Thus, the weight of a meter of film with a thickness of 200 μm is 530 g, a film of the same size, but weighs 400 g by 150 μm, 120 μm — 320 g, 100 μm — 260 g, and 80 μm — 210 g.
For greenhouses purchased film 150-200 microns. It is the most practical, because it does not break for a long time and retains its qualities. With proper care, it will last a long time, especially if it is improved with a variety of additives.
Greenhouse coating colors
Greenhouse films are sold in different colors. The reason is that depending on the color, the material has additional qualities.
Bubble film passes light without any problems and retains heat
- Black film does not transmit light, therefore it is used for mulching of beds, and not for arranging greenhouses. Is that if there is artificial lighting inside.
- Blue and blue films have anti-condensation properties.
- Black and white film color protects crops from sunburn;
- A yellow and pink film transmits a pleasant, soft light.
Still, a simple, transparent, colorless film is recommended for greenhouses. It does not lose color under the action of sunshine, passes a lot of light, allows not to use additional lighting.Important! The most famous brands of films are "Redlight", "Ball", "Biosvet", "Anti-mold", "Stable", "Agrotema A", "Harvest", "Odyssey". By purchasing them, you can count on high quality and long service life.
How to choose a film for the greenhouse
What is the best film for the greenhouse every gardener decides for himself. It is selected according to different criteria, moreover, in different cases something definite is needed. For example, for a sample, for people who want to try a greenhouse for the first time on a plot, a simple plastic film for one season will suffice. But if the coating is necessary for a long time, then choose something else. So, what should I look for when choosing a film for greenhouses:
- Cost of. Price must be acceptable.
- Strength. It is pointless to take a thin film for the greenhouse, as the pagans of the cultures easily pierce it. So it is better to choose models in the range of 150-200 microns. In addition, the film must be flexible so that it is easy to work with.
- Transparency. If there is no additional lighting in the greenhouse, an exclusively transparent film is chosen. The matt version is suitable for rooms where lighting lamps will be installed.
- additional characteristics. In certain cases, it is important that the film retains heat or transmit a lot of light, convert it to infrared, etc. All these features are always indicated in the characteristics of the material.
By choosing and securing the film on the greenhouse frame, you can get a good room for growing a wide variety of crops. Throughout the warm season, it will reliably protect plants from the influence of the external environment. The only thing that may be required from a gardener is to wash it as necessary so that it does not become contaminated. For the winter, the film for the greenhouse is recommended to be removed, then it will last much longer.