How to build a greenhouse from a bar correctly?

Many summer residents turn to building a greenhouse to grow natural vegetables and berries. Such an erection is made from different materials. Most often, there are options from a metal profile and a bar. We will talk about the latter in more detail today..


Today you will not surprise anyone with a greenhouse at a summer cottage. Such structures can be bought ready-made or built with your own hands. In this case, it is permissible to use various materials. This applies to both the frame base of the building and the covering material that complements it..

Some of the most popular and popular today are specimens made of wooden beams. They can also be easily made with your own hands, adhering to a simple technology..

The sizes of such structures are also different. For example, options from a bar, the dimensions of which do not exceed 50×50 mm, are being erected as soon as possible. Plus, it doesn’t take too much effort..

The tree itself is a rather pliable and docile material that can be processed without problems if necessary. That is why not only standard, but also more original designs with various kinds of decorative elements are often made from timber..

It is very important to keep in mind that wood will only last long if it is properly treated and cared for. Structures made of wooden blocks will need to be impregnated with a special antiseptic composition.

It will protect the material from negative external factors and attacks of wood parasites that can destroy the specified raw materials. Moreover, such procedures will need to be carried out periodically, and not once. You should not neglect them, because otherwise the construction of a bar will quickly lose its aesthetic appearance and may begin to collapse.

According to experts, most of all for the construction of log greenhouses suitable tree species such as spruce, pine and larch. From such raw materials, highly efficient and attractive structures are obtained. The construction of a spruce construction will be the cheapest. Larch is quite expensive, but it is good because it is weakly susceptible to decay, therefore it lasts longer and is more wear-resistant.

Log greenhouses should be installed on solid foundations. At the same time, the structure will be more stable and better fixed. In addition, in such conditions, a wooden greenhouse will not need regular major repairs – it will not be warped on the foundation..

As for the covering material for the beamed greenhouse, here you can also refer to different products. It will be possible to select and install it only after the completion of the construction of the frame base.


Log greenhouses are different – the choice is huge. Of course, the most popular and frequently encountered are gable and single-pitched structures, as well as structures with a simple flat roof. A dome-type or hangar-type greenhouse will look more interesting on the site..

The simplest outwardly and in matters of construction is rightfully recognized as a shed model, installed directly to the wall of a house or other outbuilding. Often, such structures are combined with a barn or installed as a stand-alone structure. Thanks to such a solution, you can get a very convenient and functional structure, which will be extremely useful..

Size and shape

Greenhouses of various sizes can be made from timber. It can be either a very small or a spacious building for a large number of different landings..

To place a couple of beds in the greenhouse and place a small path between them, you should construct an erection with a width of 2.4-3 m.

The parameter of the length of the building depends on the area of ​​the summer cottage and the planned number of landings. The optimal length is considered to be 5 and 6 m.. In such conditions, it will be possible to grow plants for a family of 4-6 people. Since tomatoes and cucumbers require different levels of humidity, as well as temperature conditions, you will need to organize a separate greenhouse for each crop..

In most cases, greenhouses are made trapezoidal and equipped with gable roofs. Moreover, their height should be at least 1.8-2 m.

Tools and materials

As mentioned above, it is quite possible to build a greenhouse from a bar on your own. Carrying out such work is easy and does not take too much free time, since wood is an easy-to-build material that can be processed without problems if necessary. However, you should start the direct construction of a wooden greenhouse only after acquiring all the necessary tools and materials..

As for the toolkit, here’s where you come in handy:

  • nails and hammer;
  • plane;
  • hacksaw;
  • roulette;
  • building level (it is advisable to buy a laser or bubble instrument);
  • perforated corner for fasteners;
  • screwdriver and self-tapping screws.

    Before starting construction work, it is necessary to select a suitable timber. It is very important to ensure that it is completely dry.. In addition, it must be free of major defects. – knots, chips, cracks (especially deep ones), as well as signs of decay. Pay attention to the cross-section of the wooden beam. Make sure the wood has not been attacked by harmful insects. In addition, the bars must not have voids..

    How to build with your own hands?

    If you have stocked up with all the necessary materials and tools, you can proceed to the direct construction of a wooden greenhouse. In order for this construction to stand as long as possible and does not require frequent repairs, it should be installed on a foundation. In most situations, strip or columnar foundations are prepared for greenhouses..

    The tape backing design is more expensive. It is recommended to contact her if you plan to put a large greenhouse on the site, in which there will be many beds.

    Foundation or foundation

    For a small to medium sized greenhouse, a columnar base will suffice. To build it, you will need sand, cement, gravel and wooden boards. In carrying out such installation work, it is imperative to use the building level.

    With the foundation, the structure will be located on one territory specially designated for it. Columnar foundation is cheaper. Usually it is made using concrete, blocks, bricks and rubble concrete..

    When carrying out such installation work, the usual formwork is replaced with metal or asbestos-cement pipes.

    If we are talking about the installation of a medium-sized greenhouse, then it is permissible to use standard concrete pillars, which are usually used when installing fences..

    These details must be well dug into the ground cleared in advance. This must be done in such a way that the pillars stand securely and firmly. After that, they are cut off with a grinder using a level.

    When assembling the foundation, it is necessary to observe the maximum accuracy of all values. The horizontal plane must be perfectly flat. Please note that it will be much more difficult to construct a frame on a poor-quality foundation..

    When the foundation base is ready, you will need to prepare all the components that will be useful for the further assembly of the frame. The bars must be trimmed in accordance with the dimensions of the future building. To protect the material from possible destruction, it is treated with antiseptic substances and covered with linseed oil.


    Having cut all the required parts, you can proceed to the next step – designing the frame base. You will need to fix the corners of the fasteners with dowel-nails. Instead, it is permissible to use anchor bolts, which will also perfectly cope with their main task. Further, it is necessary to attach a dimensional bar to them, which will play the role of the lower strapping, which is a supporting element of a one-piece structure.

    In the process of preparing the frame, special construction corners are used, with the help of which the parts are seamlessly attached to each other..

    Then you need to install window and door structures. Their installation will not take much time, but you will need to apply cladding. For example, it can be film, glass or polycarbonate sheets. Having equipped the upper harness, you should attach the rafters for the roof.

    Experts advise to make the slope at a certain angle (for example, at 45 degrees). A too steep slope should not be present on the roof, because moisture and snow will accumulate on it.

    At this point, the design of the frame can be considered complete..


    The final stage of the work will be the installation of the greenhouse sheathing. As stated earlier, different materials can be used for this, but lately more often people turn to polycarbonate. It is a fairly durable material and is not afraid of mechanical influences from the outside. In addition, polycarbonate sheets are installed quickly and easily. It is quite possible to cope with such work without helpers..

    Polycarbonate is cut into plates of suitable sizes (these parameters are usually indicated in the diagram and project drawing). As a rule, sheets of this material are attached using a special sealing gasket. This part will prevent damage to the material. These processes take very little time. The main thing is to prepare everything in advance for installation work..

    Finishing work

    Competently executed log greenhouses are able to decorate an existing site. Often, such structures attract a lot of attention, as they have an aesthetic and neat design..

    Many owners cover these structures with various paints and varnishes that have a variety of shades – the choice of the ideal option depends on the preferences of the owners and the surrounding landscape design. Experts recommend contacting a water-dispersion emulsion. Such a coating will last a long time and will look attractive..

    A variety of facade paints used in the decoration of wooden greenhouses are very popular today. Such coatings should be applied only if the temperature outside the window is at least +3 degrees. In such conditions, the paint will completely dry in about 2 days, and then it will crystallize within 3 days..

    Of course, not all gardeners turn to painting a wooden greenhouse. According to many users, this process is absolutely unnecessary – this will not make the building more functional, and its decorative properties are not important for everyone..

    Useful Tips

    When self-manufacturing a greenhouse from a bar, it is permissible to use not only polycarbonate cladding, but also glass. It can be plain glass. Some users use film instead of this material, but it will not last long – it will only last for one season.

    All joints of wooden parts must be treated with antiseptic agents. Make sure that chemicals do not get into the ground, because such work must be carried out directly at the assembly site of the structure. At the same time, it is advisable to use a bedding made of a special protective film..

    In the process of self-construction of a greenhouse from a bar, it is necessary to make notes on all beams and slats of the future structure. Thanks to such marks, it will be possible to quickly disassemble the greenhouse for the winter storage period. In the spring, it can also be easily assembled..

    Before preparing the foundation for the future timber construction, you should carefully prepare the allocated place. It is necessary to remove absolutely all the garbage, remove all the weeds. Often, a small upper soil layer is completely removed, proceeding with the installation of the foundation only after that.

    If you decide to decorate a wooden greenhouse with a special film, you need to start installing it from the top point. For this purpose, the required number of canvases is attached to the ridge bar in accordance with the width of the greenhouse itself. Fasten them with thin slats and small nails..

    Before starting the construction of a greenhouse made of wood, you need to draw up a detailed plan and drawing indicating all sizes and other parameters of the future construction. Based on the developed schemes, it will be much easier to make a house for planting with your own hands..

    The bars should not only be well processed and clean, but also even. It is not recommended to use parts with uneven and curved surfaces in construction work..

    Please note that the tree must be dry. An incompletely dried timber can lead to the fact that over time, the structure will simply lead. You can avoid such unpleasant consequences if you turn to replacing 100×100 bars with 100×50 paired bars, fixed to each other with self-tapping screws. This design will be more durable..

    If you decide to build a wooden greenhouse, but do not want to make a foundation for it, then you should be prepared for the fact that the construction will soon subside.

    The timber cannot be left without antiseptic treatment.. To date, the following types of antiseptics are distinguished:

    • water soluble;
    • water-repellent;
    • combined.

    Additionally, the tree can be varnished after preliminary priming..

    Do not think that it is permissible to use only store-bought antiseptics to protect the tree from natural wear and tear and negative external factors. This material can be processed with various folk remedies.. Here is some of them:

    • used engine oil – before using it, the oil will need to be heated to 70 degrees, and then applied to the bars themselves;
    • blowtorch – she just needs to burn the surface of the tree;
    • bitumen – before using the bitumen, it is required to warm up, and then pour it into a separate bucket with diesel fuel already filled in (when the bitumen dissolves, the composition can be applied to the timber).

    At all stages of work, it is recommended to use the building level. Thus, you can build the correct greenhouse that does not have distortions and differences in height on different surfaces..

    Greenhouse sizes can be very different. For example, many users build buildings on their sites with dimensions of 3×6 meters or more. The choice of optimal parameters directly depends on the number of crops that you plan to plant in the greenhouse. We must not forget about the presence of paths between the beds..

    An arched greenhouse can also be made of wood. Of course, carrying out such work is considered more difficult, but the result is not only very convenient and effective, but also attractive structures that adorn the summer cottage..

    How to build a greenhouse with your own hands from a 50×50 mm bar, see below.

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