How to build a polycarbonate greenhouse with your own hands: choose the optimal size, make a drawing, correctly place it on the site?

How to build a polycarbonate greenhouse with your own hands: choose the optimal size, make a drawing, correctly place it on the site?

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Arranging a greenhouse on a personal plot greatly expands the field of activity for gardeners. Due to the ability to capture and store the energy of solar radiation, the air and ground temperature in the greenhouse will be much higher than the outdoor temperature.

Therefore, it is possible not only to start gardening work much earlier in the spring, but also to extend the harvest and fresh greenery in the fall. In addition, in the presence of a solid foundation, a reliable frame and a heat source, such a greenhouse can be operated even in winter.

DIY polycarbonate greenhouses: advantages

Traditional materials for building a green area include a variety of films and glass. but films are of low strength, and glass has a large mass and is easily pricked.

Therefore, in recent years, an increasing number of gardeners are inclined to using cellular polycarbonate to create such structures.

Polycarbonate has such dignity, as:

  • high mechanical strength due to its design... Numerous stiffeners located inside the panel take up most of the load. Therefore, the greenhouse can be built without the installation of a particularly robust frame. For the support frame, you can use any available materials - metal and plastic pipes, profiles, wooden beams, etc.;
  • high thermal insulation qualitiesachieved due to the air gap inside the panel;
  • excellent light transmission, since almost the entire spectrum of sunlight penetrates through the plastic. This means the flow of a large amount of energy into the structure and an increase in temperature in it;
  • relatively low cost... Even taking into account the fact that the price of polycarbonate is higher than the price tag for the film, the operation of a greenhouse made of this material is in fact much cheaper. This happens due to the durability and the absence of the need for continuous repair;
  • suitability for DIY installation... Due to the extreme ease of working with very lightweight polycarbonate, creating a greenhouse from it does not require any special skills and special tools. In addition, this feature eliminates the need for the gardener to use only greenhouses of standard sizes and shapes, as happens with commercial models.
  • homemade polycarbonate greenhouses can be modified at any time by the owner himself... To increase the size, make additional vents, repair or replace the foundation altogether - all these works can be carried out even if there are plants in closed beds.

So, how to make (build) and correctly install a polycarbonate greenhouse on the site (dacha) with your own hands, consider a step-by-step work plan, diagrams, drawings and photos.

Optimal dimensions

The optimal (standard) size of a polycarbonate greenhouse is influenced by three main factors.

  1. Material dimensions.
  2. Plant height.
  3. Convenience and economy of operation.

As a rule, on sale there are sheets of cellular polycarbonate with dimensions of 6 × 2.1 m... Based on these dimensions, the optimal size of the greenhouse is also calculated. So for a rectangular gable version, it will be convenient to cut the sheet across into four equal parts. Accordingly, the height of the side walls and the length of each slope will be 1.5 m.

The length of the greenhouse is the sum of the widths of each such element, equal to 2.1 m... On a garden plot, it is most reasonable to use greenhouses with a length either 4.2 or 6.3 m, those. arranged from two or three pieces of polycarbonate.

Shorter buildings, built from only one sheet, will be it is difficult to provide the required degree of strength... In long ones, problems with additional heating in the cold season.

For arched greenhouses the most optimal sizes are 1.9 m high and 3.8 m wide... It is these dimensions that will be obtained if a six-meter polycarbonate sheet is bent into a semicircle.

The resulting height of the structure will allow you to grow plants of almost any size without hindrance. This will provide a supply of free space necessary for caring for the plantings.

It is best to arrange the beds inside the greenhouse along, ensuring an indent from the walls of 15 cm.This will allow you to place in the arched structure 3 beds 60 cm wide... The width of the aisles is 70 cm.

You can change the ratio of the width of the beds and aisles, if desired. However, with very wide beds, caring for them can become problematic. Increasing the width of the passages will lead to a loss of usable area.

Accommodation on the site

The most optimal place to install a greenhouse is open level place in a fenced area... The fence will save you from gusts of wind, and the absence of shading will provide a sufficient level of solar heat.

How to properly place a polycarbonate greenhouse on the cardinal points? The ends of the structure should face east and west... With this orientation, the best illumination will be provided.

When creating a plot of closed ground, one should not forget about ordinary open beds. For them, you need to leave a sufficient amount of unoccupied space on the site. You can read more about the rules for the location of greenhouses on the site by following the link.

Preparation of the project and drawing

When building a greenhouse from cellular polycarbonate with your own hands, decide what dimensions the greenhouse will have, then drawings and a project should be made greenhouses (below are photos). The drawing should reflect the following elements:

  • lateral and intermediate half arcs;
  • vertical racks;
  • fasteners to the foundation;
  • horizontal stiffeners;
  • window leaf;
  • Door.

Besides, for each element in the drawing, specify the exact dimensions... This will not only simplify further work, but will also allow you to more accurately determine the required amount of material.

Construction technology of an arched greenhouse with a frame made of polypropylene pipes

How to assemble (make) a polycarbonate greenhouse yourself, instructions in which the manufacturing and assembly with your own hands are described in stages, a drawing of a greenhouse with dimensions are discussed in this part of the article.
All work should be divided into several stages.

Stage 1. Arrangement of the foundation

Since greenhouses made of cellular polycarbonate most often have significant dimensions, under them it is recommended to equip reliable foundations... If you plan to operate the greenhouse for more than one year, then the ideal option would be to create shallow strip foundation.

The procedure for this will be as follows:

  1. The perimeter of the structure is outlined.
  2. A trench is dug 40 cm deep and 25 cm wide.
  3. Formwork is installed from boards or dense sheet material (fiberboard, chipboard, plywood).
  4. A sand pillow with a thickness of 5-10 cm is poured.
  5. Reinforcement is laid either from metal wire, or from plastic or steel mesh.
  6. Concrete mortar is poured.

At the stage of construction of the foundation, it costs immediately lay in the supporting elements for fastening the frame... Most often, metal corners or pipe cuttings are used for these purposes. The distance between the supporting elements is 1 m.

Average time of foundation hardening - 5-7 days... Then you can proceed to further work.

Stage 2. Installation of the frame

The frame of greenhouses for polycarbonate is formed by hand as follows:

  • PPR-crosses are put on the supporting elements in the foundation, to which the elements of the lower horizontal stiffener are soldered;
  • After completing the formation of the lower stiffener, the elements of the bearing half-arcs are soldered to the crosses. The length of each element is 1 m;
  • similar to the lower rib, an intermediate stiffener is formed;

  • the middle elements of the bearing half-arcs are soldered and a second intermediate stiffening rib is created;
  • in the upper part of the resulting frame, a longitudinal ridge element is created in the same way from pieces of plastic pipes and crosses;
  • in the middle part of the ends, two vertical posts are driven in. One pair of these racks will act as a door frame. Therefore, the distance between these posts should be 80 cm;
  • end horizontal stiffeners are installed.

Soldering method polypropylene pipes allows you to achieve maximum frame strength for the greenhouse. However, in the absence of electricity on the site or, if necessary, have a collapsible structure, use assembly on self-tapping screws or using clamps.

Besides PPR pipes, the frame can be made on the basis of a profile metal pipe, a galvanized profile or a wooden bar... Option with metal profile pipe gives the frame structure maximum strength. However, due to the impossibility of bending a metal pipe, all straight frame elements have to be positioned at an angle to each other.

As a result, polycarbonate on such a frame has to be fixed only pointwise and in the attachment points the plastic panel quickly collapses.

Galvanized profile convenient for the possibility of fastening with self-tapping screws. But due to the extremely low resistance to corrosion, such structures of polycarbonate greenhouses, assembled by hand, rarely withstand more than one or two seasons exploitation.

Wooden frames is easy to install and strong enough, but like a galvanized profile, a tree in a greenhouse atmosphere will not last long... It is possible to slightly increase the durability of a wooden frame by treating it with special waterproofing impregnations.

Step 3. Fastening polycarbonate panels

Exists two main ways of mounting panels made of cellular polycarbonate: dry and wet... In the latter case, the sheets are simply glued to the base. However, in relation to arched greenhouses with a frame made of polypropylene pipes, most often the dry method is used, i.e. fasteners with screws and washers.

Fig. Fastening polycarbonate to a metal frame

So that the self-tapping screw does not damage the plastic panel, holes are pre-made in the right places in it. This can be done with an ordinary drill. The minimum distance to the edge of the web is 36 mm. Drilling is possible only between the stiffeners in the polycarbonate panel.

The diameter of the holes to be drilled should be 2-3 mm larger than the diameter of the fastening screws. Otherwise, thermal expansion may damage the material on the thread of the self-tapping screw.

The distance between the fasteners depends on the thickness of the cellular polycarbonate. So, for sheets with a thickness of 8-10 mm, most often used for greenhouses, fasteners should be 40-50 cm apart... For thicker specimens, the distance can be increased to 60-80 cm.

In addition to the screws themselves, the fastener includes thermal washers with a cover. Their purpose is to keep the polycarbonate in close contact with the frame even during thermal expansion. Rigid fastening without thermal washers will lead to rapid material destruction.

Polycarbonate sheets are interconnected by one-piece or split profiles. These profiles allow to seal the joints between panels, and also keep them stationary relative to each other.

Fig. Polycarbonate profiles

End profiles are used to seal the ends. In their absence, the edges of polycarbonate sheets can be sealed with silicone sealant... If this is not done, then water will penetrate into the cavities of the polycarbonate and can lead to its deterioration.

Alternative constructions

In addition to arched, other types of greenhouses can be assembled on the basis of cellular polycarbonate.

1. Do-it-yourself rectangular polycarbonate greenhouse

The shape of the greenhouse in the form of a regular rectangle is selected only for small structures... With their help, you can insulate one separate bed in the spring season. It is undesirable to increase the size of a greenhouse of this shape, because a flat polycarbonate greenhouse roof cannot withstand the accumulated snow... Also, rectangular greenhouses poorly resist gusts of wind.

2. Do-it-yourself single-slope polycarbonate greenhouse

Such a structure is almost indistinguishable from a flat roof structure. The only difference is the height of the walls. The back wall is made much higher than the front.

Shed greenhouses are conveniently placed in the immediate vicinity of the southern wall of the house... In this case, the slope of the roof will be optimal to obtain the maximum solar energy.

3. Gable greenhouse

It is reasonable to use a gable roof for a polycarbonate greenhouse built with your own hands in cases where the grown plants will require a maximum of free space. This design will allow you to arrange straight walls, increasing the internal volume (in comparison with arched).

The disadvantage of such a structure is a more complex structure that requires the creation of a rafter system.

4. Prefabricated greenhouse

The prefabricated version of the greenhouse is convenient because in the hot months it can be removed from the site altogether, thereby freeing up space. In addition, dPrefabricated greenhouses do not require serious foundationsto keep the land useable.

The installation of such greenhouses should not include welding, all fasteners must be carried out on threaded connections or on clamps.

How to make a window, a window and a door

Any greenhouse must have an effective ventilation system.... This will reduce the humidity level and regulate the temperature. The polycarbonate greenhouse is ventilated through windows and vents.

To equip windows or a window, it is necessary to provide appropriate places in the frame of the greenhouse. Windows are most often located on vertical walls, and the vents are located above the front door at the end.

To create the window frame, the same construction materials are used as for the entire frame of the greenhouse. The easiest way to arrange a window is by cutting in two additional horizontal frame ties between the vertical supports.

Structurally, the greenhouse door, window and vent may differ only in size. The easiest way to make them from the remains of polycarbonate, fixing the material on a light frame and providing it with light loops. If necessary, the door can be made in a more serious version by installing a full-fledged door frame made of wood.


Cellular polycarbonate gives a wide field for the design of various types of greenhouses... The small mass of such structures is successfully combined with good thermal insulation and ease of construction. Any home craftsman can build such a greenhouse even without helpers and with the most modest budget.

Some additional features of the construction of a polycarbonate greenhouse can be seen in the video:

Watch the video: What Type of Greenhouse Should You Build? (May 2022).