Let’s see together what it takes to build a small do-it-yourself greenhouse in the garden, starting from the materials to the construction methods.
Usually to build a wooden greenhouse you need hobby level equipment such as the radial miter saw or the circular saw, and consequently the relative experience in using them. However, we want to show you how to make a greenhouse in a simple way, proposing different easy-to-implement solutions that do not require the use of complex power tools, such as motor saws, and with a relatively affordable construction cost since the main expense is consisting mostly of the purchase of the material to be used.
Furthermore, as regards the choice of materials, it is important to take into account the size of the project, the expense to be incurred for a small greenhouse is different from that required for a large one, even if this factor is not always decisive from the point of view of economic view. To clarify this point, however, let’s start by examining the materials required for the construction of a greenhouse for plants .
Wood, glass, plastic or coated tubulars
Those mentioned in the title of the paragraph are the most suitable materials for the construction of a do-it-yourself greenhouse ; the cheapest of these are tubulars and plastic, they are also easier to assemble but you have to take into account their poor aesthetics and the fact that they tend to wear out more quickly, so they require more frequent maintenance if you want them to last longer . Wood and glass offer greater durability and are also more aesthetically pleasing, however, but have a higher cost and require more effort in assembly.
From a purely economic point of view, arches for do-it-yourself greenhouses are the best solution; they are usually made of iron, or other metal alloys, and are rubber coated to prevent oxidation. With 20-30 euros it is possible to buy sets of arches about 80 centimeters high, just insert them into the ground and cover with a transparent plastic sheet.
Small arches are economical and functional but are only good if you need to create a DIY mini greenhouse , to cover a few linear meters of garden intended for growing vegetables, but it is not recommended for creating larger greenhouses because the arches are rigid and not they give room for manipulation or adaptation.
By spending from 80 to 160 euros, however, it is possible to purchase kits including arches, support frames and covering sheets that allow the creation of greenhouses up to 2 meters high in the central point. The assembly of these structures is simple and does not require the use of complicated tools, in fact screwdrivers or an electric screwdriver are enough; to increase their durability, however, and in particular to make them more resistant to wind and bad weather, they must be suitably reinforced.
Wooden garden greenhouses
If, on the other hand, you intend to build a garden greenhouse that is durable, not aimed exclusively at the cultivation of vegetables and which can also perform a decorative function, then the best solution is to use wood and glass, as well as have a jar at hand. of varnish for wood .
It is also possible to keep the construction costs relatively low in this case, as long as you have clear ideas on how to build a greenhouse . In other words, that is, it is necessary to start from a detailed project which, in addition to the form, also takes into account the measures; in this way it will be possible to perform a more precise calculation regarding the quantity of materials required.
Our advice is to start with a simple project, a quadrangular or rectangular structure with four walls and a sloping roof on one side only. The walls must be made like those of domestic fixtures, that is to say the frames in which the glass plates will subsequently be applied.
This type of project offers advantages both from an economic point of view and from that of feasibility, because it will be possible to directly purchase the semi-finished wood, in the form of strips and boards, and the paint necessary for the treatment against bad weather. Furthermore, the spruce boards with a planed and a rough side make it possible to keep the overall expenditure low since, depending on the size, they have a price that varies from 2 to 6 euros per table.
The choice of the type of glass
As far as glass is concerned, there are two options: sheets in synthetic or tempered glass; and in this case too the measures affect expenditure. Tempered glass can cost around 20 to 120 euros per square meter, depending on the thickness, and is the best solution in terms of durability, aesthetics, weather resistance and thermal resistance of the greenhouse.
The problem posed by the use of tempered glass, however, is the weight; the greater the surface and thickness of the glass sheets, the greater the weight that will weigh on the structure, which means that the wooden frames will have to be thicker and more robust and the overall cost will increase accordingly.
Synthetic glass has a cost more or less similar to that of tempered glass, i.e. a sheet of one square meter can cost from 16 to 120 euros depending on the thickness, whether it is transparent polycarbonate or transparent polymethacrylate, but on the other hand it is far lighter than tempered glass and saves on wood.
The cheapest do-it-yourself solution, on the other hand, is represented by the use of half-millimeter-thick transparent plastic sheets, which are usually sold in rolls and at a much lower cost than synthetic glass sheets.
With this last solution it is possible to solve both the weight problem and the assembly problem, since the plastic sheet can be applied directly to the frame using metal clips; the aesthetic impact is significantly lower, however, and also the resistance over time is decidedly limited.