GREENHOUSE UNDER THE FILM: AGROFIBRE FOR THE GREENHOUSE AND FRAME WITH HIS OWN HANDS

Film greenhouses differ simple construction. In fact, this is a frame with a stretched film. You can install it yourself, the main thing is to choose the right consumables and determine the rigidity of the frame.

Advantages and types of film

There are several reasons why a greenhouse is used to cover the greenhouse. Select the most significant:

material very lightaccordingly, the installation and installation process is greatly simplified;
such a greenhouse is good passes air and sunlight, providing optimal conditions for growing plants;
film has low weight, but differs in high wear resistance and reliability.

Among cons there is only one, but very significant - the film is afraid of cuts.

With regard to the range, you can select such subtypes of the material:

Hydrophilic stabilized film: eliminates the formation of condensate on the walls of the structure, which, by the way, can harm plants. Moisture is distributed evenly and trickles down the walls, but does not drip.
Ethylene vinyl acetate copolymer. It is characterized by high strength, hydrophilicity, transparency (up to 92%). Resistant to strong wind gusts, temperature extremes.
Light stabilized fabric. It incorporates special light-stabilizing components, therefore it easily prevents the destructive force that UV rays have.
Film with additives. Significantly increases the strength of the structure, is characterized by an antistatic effect, can be hydrophilic, scare off parasites.
Reinforced film. Very durable: the thickness of its threads is up to 0.3 millimeters, due to this it withstands heavy loads. But it is characterized by low light transmission.
Material "Svetlitsa". It has a yellowish tint, ideal for use in different climatic zones. The strength index is 3 times higher than that of similar products in this range.
Heat film. Reliably protects against sudden changes in temperature and the skeleton of the structure, and the plants that are inside.

In a separate category is to provide covering nonwoven materials. They are increasingly used for arranging greenhouses and greenhouses. There are a wide range of products on the market; for example, you can choose spunbond, agrompan, Agrotex other.

Distinctive advantages nonwovens:

pass UV rays and moisture well, but they are characterized by the presence of a stabilizer, which completely eliminates the harmful effects of sunlight on the grown plants;
non-woven materials guarantee the maintenance of an optimal microclimate because they do not absorb excess moisture. The soil also does not dry out;
the greenhouse itself heats up quickly and cools down slowly;
to care for such a surface as easy as possible.

Often gardeners ask themselves: is it possible to use ordinary food film as a covering material for a greenhouse? The answer will be unequivocal: not. The fact is that this product is made of high-pressure polyethylene. In this regard, high strength does not possess.

Choose the material for the frame

The frame is of key importance in the structure of the greenhouse, as it provides resilience in relation to strong gusts of wind and temperature extremes. That is why the frame, first of all, should be reliable.

Wooden frames. Enjoy the most popular because they are inexpensive and easy to install. Of the minuses can be called a short service life and the need for regular maintenance.
Steel frames. Ensure the strength and durability of the structure (for decades). As for the drawbacks, such a greenhouse will cost much more. Moreover, a metal frame for the film is assembled using special angle brackets or welding, which complicates the task and increases the amount of upcoming expenses.
Aluminum frames. They are more expensive than the above models, but are distinguished by high strength, low weight and corrosion resistance.
Plastic frames. Easy to assemble, easy, inexpensive. But in terms of strength, they leave much to be desired.

Agrovlokno for greenhouses and other materials for shelter

In addition to the film for the shelter of the greenhouse, you can use a number of other materials. In particular:

glass. Good thermal insulation of the room, transmits light. But each sheet of glass weighs a lot, which implies the arrangement of a reinforced frame. The material itself is very fragile;
agrofibre. Synthetic canvas, similar in properties to non-woven fabric. Presented in an incredibly wide range. Its most famous varieties are agrospan, agrotex, spunbnot, agril, as well as pegas-agro, lutrasil, and others;
cellular polycarbonate. It is characterized by high transparency, heat insulation. Sheet strength is enough to withstand strong hail, gusts of wind, snow. The material is lightweight, flexible, so it is often used to create arched structures.

Read more about greenhouses made of glass, plastic bottles, polycarbonate.

Methods of fastening the film to the frame

You can select several methods:

rake nailed to the ends. Unreinforced film often breaks on nails from strong gusts of wind. And this method allows to avoid unpleasant consequences: the material is attached only on the ends of the structure;
rake. It involves the use of wooden strips, screws or nails for fixing the film. Also suitable packing tape: it can be secured with staples;

Note! This option is only suitable for wooden frames!

clips, clips. Sold in any hardware store. Significantly simplifies the procedure, moreover they are inexpensive;
eyelets and elastic cord. The fixation system involves snapping PFH in the profile with the film (on the side walls, roofs, ends of the structure).

Note! Only suitable for strong film, better with the addition of a cuff.

rope, rope, elastic cord. The main condition that must be adhered to is to tie up the greenhouse in the form of Z, that is, diagonally between two parallel cords;
grid. First of all, the greenhouse is covered with a film, then - with a grid. The latter is tied to the body.

Film bonding methods

All methods of bonding the film can be divided into hot and cold.

Hot. You need to prepare a soldering iron (or iron), fluoroplastic tape.

we impose cloths of a film at each other. The width of the overlap should be 1-2 cm;
iron or a soldering iron tip through a fluoroplastic tape slowly spend on the surface.

It will, most likely, not immediately, therefore, in the beginning it is better to practice.

There is another method that involves using blowtorch and wide strips of metal (5-10 cm).

two sheets of film are laid between a flat surface and strips of metal in such a way that an overlap of 1-1.5 cm is obtained;
Using a blowtorch, heat the joint.

Note! It is important not to overheat the metal, otherwise the film under it just melts!

Cold. Assume the use of various adhesives, such as BF-4, BF-2, "Moment". Prior to the start of the work, the places of the intended bonding on the surface of the film are processed chromic anhydride (25% solution will do).

If you use a polyamide film, glue will do. PC5. But after gluing, the seam will need to be ironed further with a heated iron (approximately, up to 50-60 ° C).

You can use and special superglue for bonding plastic film. In this case, the seam will turn out not only strong, but even.

Note! Hotmelt glue for stitching seams will not work!

Preparatory stages

Not only its efficiency, but also the qualitative, quantitative characteristics of the crop directly depend on the choice of the location of the greenhouse, compliance with the rules of installation.

You can stop your choice from one of the types of structures, based on the tasks set before you:

according to the term of use - spring-summer and year-round;
by type of construction - arched and hangar, block and tunnel;
by the method of erection - shelving, hydroponic or soil;
to destination - seedlings and vegetables;
by type of coating used - from polymer, glass or film;
on the material of which the frame is made - wooden, aluminum, plastic, made of galvanized.

After you decide on the type of construction, you need to choose the most successful place for its installation, focusing to the cardinal points. In this regard, there are two main positions:

latitudinal: the sides of the structure are oriented to the north and south, the facades are to the east and west;
meridional: the side slopes look to the west and east, while the facades of the greenhouse - to the north and south.

The place to install the greenhouse should be sunny. Ideally, choose a site where snow comes off earlier.

The territory allocated for the facility must be carefully prepared:

it needs to be cleared of garbage;
check that there are no holes in the ground;
the surface must be smooth: the presence of a slope will inevitably lead to a distortion of the structure.

If, however, it is not possible to find a completely flat area, the foundation for the greenhouse must be laid without fail. You can use different materials: timber, blocks, concrete.

Step-by-step instructions for installing a greenhouse under the film

Step 1
Carefully prepare the area set aside for construction. Well we tamp the ground. We reinforce the box of boards in the corners with the help of reinforcement.

Step 2
Along the perimeter of the foundation we fix several rods of reinforcement. It is important that they are equally spaced apart. The construction of an area of 3 × 6 m will take about 35 rods.

We dig the rods into the ground to a depth of half a meter and carefully strengthen them.

Please note: the height of the rods should be at least 0.6 m above the ground.

Step 3
After the bars are strengthened, you need to put PVC pipes on them (cut in advance). This will connect the reinforcing bars located opposite each other.

Step 4
Using a screwdriver, fix the PVC pipe with metal loops.

Step 5
We carry out additional reinforcement of the structure, using a bar (50 x 50 mm section is ideal)

Step 6
We strengthen the corners of the structure with a bar. This will significantly increase its reliability.

Step 7
We connect with each other several PVC pipes. It is important that their total length is equal to the length of the greenhouse. The next step is to fix the long pipe to the transverse arcs of the frame.

Step 8
Cover the finished structure with a film. You can use any of the methods described in this article (section "Methods of attaching a film to the greenhouse frame")

Step 9
We wrap the front and back parts of the frame with foil.

In the place intended for the doorway, the film is fitted inside.

Step 10

We make measurements of the doorway;
We bring down the timber, according to the data;
We fix the film and cut off its excess;
Fix the door on the frame of the greenhouse with metal hinges;
Similarly, install the vents.

Conclusion

If desired, to build such a greenhouse can be a couple of days. This is a summer version that does not require heating and special care. In this case, your costs for the purchase of materials will be minimal.