Greenhouse with a removable roof: 5 advantages

One of the latest innovations in the construction of greenhouses has become a removable or retractable roof.
For proper growth of plants, they need to be provided with all the conditions - heat, air, moisture and light. Greenhouses with an opening roof promote plant growth and development, resulting in rich and healthy harvests.

Polycarbonate greenhouse with a removable roof: user reviews

Greenhouses with removable roofs have become very popular among farmers. Such greenhouses have found application both in private use and for industrial cultivation of vegetables.

The main purpose of an opening greenhouse is to ventilate the structure in warm weather, when the windows and doors are not enough for air to enter.

All the advantages of a greenhouse with a removable roof can only be appreciated after its use. It is not necessary to buy a ready-made structure; if necessary, you can assemble it yourself from inexpensive materials.

Positive points:

1. In winter, snow falls through the open roof of the greenhouse onto the ground, moisturizes and nourishes it, and prevents it from freezing and drying out.
2. Heavy snow covers can damage the frame of the greenhouse if it is not removed promptly. The arched design with an opening roof allows snow to accumulate inside the greenhouse rather than on the roof.
3. The polycarbonate coating conducts light well. If the weather is warm outside, you can open the roof to allow the plants in the greenhouse to have direct access to sunlight.
4. A removable roof can completely replace ventilation in the warm season. In hot weather, to prevent plants from steaming under the roof, you can open the doors and open access to fresh air.
5. Such a greenhouse is very easy to install; it does not require a special foundation, since the structure is not very heavy.

As a rule, the roof of a greenhouse should be removed very quickly and without much effort. To do this, curved polycarbonate sheets are inserted into a profile with grooves, along which they will move smoothly and are equipped with special latches. Once one of the roof sections is opened, it can be easily secured.

Features of construction

There are several ways to solve the issue of constructing a greenhouse with an opening polycarbonate roof:

• purchase a complete set of the model you like and pay for the installation of the structure;
• buy a frame, reserving the right to independently select the foundation, polycarbonate panels and install the greenhouse;
• assemble a greenhouse with a removable roof with your own hands from your own materials.

Each option has its own characteristics.

Installation of ready-made structures

A greenhouse with a removable roof, manufactured in an industrial environment, is certainly accompanied by assembly instructions. A prerequisite for the correct installation of a convertible greenhouse is a prepared, flat surface of the site. The frame is mounted without major tightening of connections. Final fastening is carried out after assembly is completed and verification testing has been completed. Having previously secured the connecting nodes, they proceed to covering with polycarbonate, after which the greenhouse becomes stable and is not afraid of natural disasters.

Significantly more actions involve individual production.

Convenient greenhouse “Convertible” with a removable roof

A popular type of greenhouse with a removable roof is the Flora-Cabriolet design. The roof in this greenhouse moves down and up thanks to the special laying of polycarbonate sheets.

In the open position, the sections do not move - they are fastened together with special latches. Most often, the latches are made of high-quality metal that is not subject to corrosion, but if the latches are damaged, they can be easily replaced.

The convertible greenhouse has windows that can be opened for ventilation. However, in extreme heat, small windows are not enough to allow air flow into the greenhouse, so many farmers open several sections of the roof to allow the plants to breathe well.

The convertible has fairly small dimensions - no more than 2.8 meters wide, maximum length 5 meters. The height depends on the dimensions of the structure from 1.2 to 2.2 m.

The polycarbonate coating withstands snow well, protects from rain and conducts sunlight well - that’s why polycarbonate structures are so popular with beginners and experienced summer residents. The greenhouse covering can withstand any temperature changes and can withstand both - forty degrees of frost and temperature rises of up to +90 degrees.

In winter, snow falls into the empty, slightly open “Cabriolet” greenhouse, thanks to which the soil is saturated with moisture and retains all the necessary microelements. If the greenhouse is closed in winter, snow does not accumulate on the walls of the structure; it slides down with ease.

In small summer cottages, a convertible greenhouse is used - much more compact than the greenhouse of the same name. The principle of use is similar, but the summer resident gets access to the beds from outside the structure. An arched greenhouse is mainly used for growing a maximum of two types of plants.

Do-it-yourself compact greenhouse with a roof: important details

Before assembling the greenhouse structure, you need to decide on the location for its placement. The area must be cleared of roots and bushes, the layer of soil must be leveled as much as possible.

To strengthen a stationary structure, you need to prepare a foundation. Solid - if the greenhouse is large, strip - for a small greenhouse.

The place should be quiet, hidden from the wind. There should be no buildings or tall trees near the future greenhouse that could obscure the sunlight. The right location is the key to a great harvest!

The construction of a greenhouse with a removable top is practically no different from a regular greenhouse. The only difference is the installation of the roof top, which will tilt or slide. As a rule, polycarbonate sheets are mounted in special grooves. If necessary, part of the greenhouse can be folded up or part of it removed (as in the Matryoshka greenhouse).

To improve the product, you can equip the greenhouse with a special mechanism. The principle of its operation is that when the air inside heats up to a certain temperature, the mechanism is triggered and opens the hatch for ventilation.

Many summer residents install removable roofs for the spring and summer, and in the fall, after harvesting, they remove the covering, leaving only the frame. In this case, the tightness is lost and the strength of the polycarbonate is compromised, which has to be mounted back and forth frequently.

Recommendations for choosing a location for a greenhouse

1. For the greenhouse, it is recommended to choose a location that will receive direct sunlight.
2. It is also important to choose an area where there will be as little open wind as possible so that the greenhouse is in a heated place.
3. It is important to pay attention to the fact that there are no trees near the installed greenhouse. Since they may fall off foliage or fruits, which will cause some damage.
4. It is important to pay attention to the soil. It should be very smooth and hard.
5. It is also recommended to install the greenhouse closer to the shed.
6. We also need to think through convenient approaches to the greenhouse design.

Gable greenhouse "Delta" with removable roof

This greenhouse is very similar to many other gable structures with a polycarbonate coating. The peculiarity of the Delta greenhouse is the ability to slightly open part of the roof in the summer or completely dismantle it in the winter. You just need to pull the small handle and open or remove the roof completely.

A greenhouse with a removable roof is not afraid of snowy winters - you just need to remove the roof and not worry about the soil inside the greenhouse. Also, you will not be affected by the problem of removing snow from the roof slopes.

The frame of the Delta gable greenhouse is made of galvanized pipes with a cross-section of 2 cm, which are resistant to corrosion.

The width of the greenhouse is 2.5 meters, the length ranges from 2.2 to 10.6 m. Despite the lightness of the structure, experts recommend installing it on a brick strip foundation in order to avoid subsidence into the ground.

The greenhouse kit includes a frame and cut polycarbonate sheets, which only need to be inserted into the grooves for sliding. You can do this yourself without the help of specialists. The roof can be opened all the way or partially opened to ventilate the greenhouse.

Review of greenhouses with opening roof 2021

Today we will conduct a comparative review of new greenhouses with a sliding roof and with opening sides.

For comparison, we have selected the ten most popular greenhouses with an opening top on the Russian market:

• "Marusya"
• «Tulip»
• «Kremlevskaya-Rublevskaya»
• "Orion"
• "Delta"
• "Flora-Cabriolet"
• "Nurse-Clever"
• "Helper-Gardener"
• "Sesame"
• "Sim-Sim"
• "Gift"

Comparison information is taken from manufacturers' official websites and verified consumer reviews.

All greenhouses are sorted in ascending order by the cost of a 6-meter long frame for the period 2018-2019-2020. Some models cannot be installed without a foundation, so we have added the cost of the foundation and lugs to the price.

So, let's move on to our competitors.

Greenhouse "Marusya"

, Moscow. No foundation required. Square profile 25 and 20 mm.

The price of the frame is 18,800 rubles.

Advantages: Equipped with 4 mm Premium polycarbonate. density 0.7 kg/m2 with effective UV protection on the surface, service life 15-20 years.

The width of the sliding polycarbonate sheet is 1 meter; if desired, it can be reduced to 50 or 70 centimeters. The frame does not rust, is made of galvanized square pipe. The design allows you to install automatic vents.

Inexpensive, repairable polycarbonate guides with UV protection. Collapsible, convenient for transportation.

Disadvantages: Difficulty in self-installation.

Greenhouse "Kremlevskaya Rublevska" with opening roof and sides

Manufactured by “New Forms”, Kimry. Installation on a foundation or on piles. Double profile 20x20 mm.

The price of a frame of 6 meters is 24,300 rubles. + pine foundation 3000 rub. + lugs 1 set (4 pcs.) 600 RUR, you need to buy at least 2 sets.

Advantages: Galvanized frame. There is a wide selection of SPK varieties; the assortment also includes expensive, high-quality polycarbonate, just suitable for sliding greenhouses.

Disadvantages: Rublevskaya greenhouse with a sliding roof and sides, this is a simplified version of the Kremlevskaya greenhouse, it has only three longitudinal jumpers. Mounting on “crabs”. Opening sides and a sliding roof 2 meters wide have a large windage, strong winds can tear the soft polycarbonate out of the guides, It's difficult to put back in.

When polycarbonate moves up and down, the protective layer from ultraviolet radiation on the bottom sheets can be rubbed off due to friction, which will lead to its rapid deterioration. When condensation forms on the inner surface of the greenhouse, the wide sheets of polycarbonate stick, the sides will not rise until the top dries. Rising The sides are heavy enough for older people.

Difficult to assemble.

Greenhouse Botanist "Tulip"

Manufactured by "AGS-Service", Minsk. The top and sides move apart. Installed on the foundation or on piles. Profile 40x20 mm.

The cost of the frame is 25,700 rubles. + 3000 timber foundation + lugs.

Pros: Opening top.

Galvanized.

Disadvantages: Large windage of 2-meter sliding polycarbonate sheets. Polycarbonate is a soft, elastic material, with such windage it can be torn out by a gust of wind. There are no rubber seals for the cracks through which heat escapes. In winter, snow gets into the cracks between the opening roof and the sides, bursts the polycarbonate and squeezes it out of the guides.

When installed without a foundation, on piles, due to large spans, the polycarbonate may skew and fly out of the guides. The guides are made of plastic containing various additives, vinyl chloride, which, upon contact, destroy the polycarbonate within a few years. Factories prohibit contact of polycarbonate with PVC, and you lose the warranty from the SPK manufacturer.

Difficult to install. The profile guides are not transparent, the frame is not visible through them, which makes it difficult to secure them with a self-tapping screw exactly in the center and this causes the sliding elements to jam. Thick plastic guides and the metal frame have different coefficients of thermal expansion.

In winter, the plastic loses elasticity in the cold and becomes rigid, the guide pulls the screw out of the metal and, as a result, gaps form between the frame and the guides.

Expensive replacement of guides in case of breakdown; they can only be purchased from the manufacturer in Belarus; in Russia, greenhouse sellers currently do not sell guides separately.

“Crab system” for attaching pipes (it becomes loose over time).

Bulky, inconvenient to transport in a car.

Greenhouse "Sim-Sim"

Produced by Greenhouses of the North LLC, Cherepovets. A copy of the Sesame and Tulip greenhouses with all their shortcomings. Installed on the foundation. The width of the transoms is 2 meters. The profile is 40x20 mm. Copied from the Tulip greenhouse.

Profile 20x20 mm with a double arc, a copy of the “Helper-Gardener” and “Sesame” greenhouses.

A frame of 6 meters costs 25,100-27,000 rubles. + foundation made of timber 3000 rub.

+ you need to buy lugs for the timber (at least 1 piece every 2 meters).

Advantages: Galvanized.

Disadvantages: The same as all greenhouses with opening sides. Large windage, loose polycarbonate sheets are torn out of the guides by strong winds, and in winter they are also squeezed out by snow.

To reduce the final cost of the Sim-Sim greenhouse, the Greenhouses of the North plant equips its frames with cheap, lightweight, 0.65 kg/m2 density, without UV protection on the surface, 4 mm polycarbonate. Such polycarbonate with so-called UV protection “in bulk” can begin to deteriorate after just three years. Complex and time-consuming assembly.

There are no rubber seals for the slots through which heat is blown out. “Crab system” for fastening the pipes (it becomes loose over time). The guides are made of plastic; they can begin to crumble after a few years under the influence of the environment. Replacing broken guides is expensive and can only be purchased from the manufacturer.

According to reviews on the forum, the lower side parts of the Sim-Sim greenhouse are difficult to open. Welded, the seams can rust.

Bulky, requires a truck for transportation.

Greenhouse "Sesame"

Manufactured by "Rosteplitsa", Dedovsk. The tops of the sides move apart. Installed on the foundation. Profile 20 mm.

A frame of 6 meters costs 32,200 rubles. + timber foundation 3500 + lugs 1 piece – 200 rub. (at least 1 piece is required every 2 meters).

Pros: Sliding top.

Disadvantages: The Sesame greenhouse is similar to all greenhouses with an opening roof and sides and therefore has the same disadvantages.

2-meter expanding polycarbonate sheets have a large windage, they can easily be torn out by a strong wind. Heat loss due to the lack of rubber seals for the cracks and the “Crab system” becomes loose.

Replacing broken guides is expensive. Installation is difficult.

Bulky, impossible to bring in a car.

Gift

, Dubna. No foundation required. Profile 33x33 mm.

The frame costs 37,800 rubles.

Advantages: Polycarbonate 4 mm with a density of 0.7. The frame has a class 1 anti-corrosion metal coating on the outside and inside - 275 g of zinc per square meter. Anti-corrosion guarantee 15 years! Rubber seals included.

The width of the sliding part is 1 meter.

Disadvantages: Highest price.

Complex and longer to assemble than all other greenhouses with an opening roof.

Greenhouse “Nurse-Clever – Standard”

Manufactured by Metal Service, Novosibirsk. – in 2019 the plant closed, the greenhouse is no longer produced! Profile 20 mm. Roof can be opened with a winch. Foundation required, not included.

Frame price from 19,400 rubles. + the cost of your foundation + lugs 1 pc. – 250 rub. (for reliable fastening of a frame 6 meters long, a minimum of 8 hooks are required)

Pros: The roof opens and closes quickly.

Galvanized.

Disadvantages: Requires the purchase of a foundation. There are no dealers in the regions, frames are sent throughout Russia by a transport company. Difficult self-assembly. It is impossible to open part of the roof, for example, in the middle or along the edges; you can only open the entire roof at once.

The winch may break.

Source: https://xn--80ajjabandvpdns4d1d.xn--p1ai/%D0%BE%D0%B1%D0%B7%D0%BE%D1%80-%D1%82%D0%B5%D0%BF% D0%BB%D0%B8%D1%86-%D1%81-%D0%BE%D1%82%D0%BA%D1%80%D1%8B%D0%B2%D0%B0%D1%8E% D1%89%D0%B5%D0%B9%D1%81%D1%8F-%D0%BA%D1%80%D1%8B%D1%88%D0%B5%D0%B9-2018

Installing a greenhouse with a removable roof (video)

Greenhouses with a removable roof are the dream of any summer resident who cares about his harvest. They have received positive reviews, but they also have their drawback - poor sealing. Despite this, greens, vegetables, mushrooms and short berries are often grown in such greenhouses.

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