Do-it-yourself warming of the balcony with penoplex: step-by-step instruction

In order to use the space of the balcony as efficiently as possible, insulation can be made. Thanks to this, this part of the living space turns into a comfortable and cozy room. However, before starting work, it is important to familiarize yourself with the steps in the process.

Why choose penoplex

If you decide to make a balcony insulation with penoplex yourself, you can decide whether this material is suitable for these manipulations. The degree of protection from the cold will depend on the quality of the insulation material. Among the features, an insignificant coefficient of thermal conductivity can be distinguished, especially if we compare with foam, mineral wool or glass wool. This saves square meters as well as money.

do-it-yourself warming of the balcony with penoplex

In addition to additional positive characteristics, it can be noted that the foam is not able to absorb moisture during the entire period of operation, which can reach 50 years. During this time, the material will retain its quality characteristics. Consumers choose penoplex also because of its strength: the sheets do not crumble and do not crumble during installation and operation. It is impossible not to pay attention to environmental safety, the material has quality certificates. You can count on absolute fire safety. This insulation perfectly copes with pressing loads, just cuts and does not rot. The structure of this heat insulator remains unchanged at a fairly wide temperature range, which varies from -500 to +750 degrees. On sale you can find sheets whose thickness can vary from 20 to 100 millimeters.

Features of external insulation of the balcony with foam

step-by-step instruction

If you carry out the warming of the balcony with penoplex yourself, you can save free space inside the balcony. Among other things, such work does not involve additional calculations to determine the location of the dew point. However, this approach has its drawbacks, which are expressed in the fact that the appearance of the building after the completion of thermal insulation work can be changed. This may require official authorization. If the apartment is located above the second floor, then it will be very difficult and rather dangerous to carry out such work independently. That is why you will need to use the services of industrial climbers, for which you may have to pay a considerable amount.

Specialist advice

foam insulation technology for the balcony

Do-it-yourself warming of the balcony with penoplex may involve the use of foil material, which can be foam polyethylene, while siding can be used for the exterior of the balcony. Among other things, for the installation of the crate, you will need a beam, tools, fasteners, construction tape, primer, mounting foam, mortar and mastic. When choosing a mounting foam, you should ensure that it does not contain toluene.

External insulation technology

warming the walls of the balcony with foam

Do-it-yourself warming of the balcony with penoplex involves the use of stepladders and scaffolding, but this is only true if the apartment is on the first or second floor. Carrying out insulation with the help of foam can be divided into three stages. The preparation is the first, at the second stage the warming itself is carried out, the finishing work will be finishing manipulations.

Preparatory work

foam foam thickness for warming the balcony

A step-by-step instruction for the work provides for the arrangement of a lattice fence. To do this, you can use a moisture-resistant material such as plastic or drywall. If we are talking about a brick fence, then previously it can be treated with a primer, which will increase the adhesion quality of the surface when applying glue. Using mastic, polyurethane sealant , polyurethane foam or cement-sand mortar, you need to get rid of all the cracks between the floor and the parapet. To assess the evenness of the base, it is best to use the construction level, with the help of mounting foam and mortar it is possible to correct the surface, eliminate unevenness. Surplus should be disposed of by cutting.

Thermal insulation work

internal warming with foam foam balcony

The step-by-step instruction for thermal insulation of the balcony in the second stage involves the conduct of insulation. To do this, on the prepared surface, it is necessary to apply point or zigzag about 7 points of the adhesive composition, filling in one square meter of the base. At the next stage, the foam sheet is pressed tightly, and then fixed. It will be possible to get rid of seams by means of polyurethane foam. At the next stage, foil material is laid, with the foil facing outward. The sheet is fixed on penoplex and tightly fixed with glue butt, the seams will need to be closed with construction tape. The master must ensure that the joints are not at the corners.

Finishing work

sequence of insulation of the balcony

The technology of warming the balcony with foam can not exclude the finishing work. To the base with the help of self-tapping screws you need to fix the crate, which will consist of a wooden beam with a section of 40x25 millimeters. If the balcony is located on the first floor, then you will definitely need to take care of the floor insulation. These works are carried out according to the same methodology as described above. When carrying out work using scaffolding and ladders, you need to enlist the help of a second person, which will guarantee safety and comfort.

Carrying out internal warming

Thermal insulation of the walls of the balcony with foam can suggest internal work. This approach is used if it is impossible to carry out external manipulations. Quite often, these techniques are used in combination. First you need to think about how to draw communication lines, namely - electricity, television antennas, Internet wires. Among other things, with this approach, quite often a device for underfloor heating or another heating method is provided. Double-glazed windows will need to be installed before the start of insulation work.

Stages of work

Internal insulation with foam foam of the balcony involves the fixation of sheet material at the first stage. Initially, it will be necessary to prepare the surface of the floor, ceiling and walls, covering everything with a primer. At the next stage, the slots are sealed with mastic, mortar or polyurethane foam. Fastening of foam sheets is carried out using glue and mechanical fasteners as dowels. Do not forget about the sealing of the seams, which is done using a mounting foam. The thickness of the foam plastic for warming the balcony can be selected depending on the desired effect. At the next stage, foil material is strengthened, the foil should be facing out. Now the master is laying communications, after fixing material for decoration. It can be not only siding, but also moisture-proof drywall.

Recommendations for work

The master must observe the sequence of warming the balcony, the only way to achieve a positive effect. Finishing corners can be done with the help of a plinth for floor and ceiling, special elements will have to be located between the walls. It is most advisable to start such work from the ceiling, however, some masters recommend starting these manipulations with floor insulation. Thermal insulation of the main wall should not be made. After the surface is primed, it is possible to fix the finishing material on it.

For the floor and ceiling, it is recommended to use fairly thin sheets of the described material, the thickness of which is 20 millimeters. Their thickness will be sufficient in the presence of a brick wall. If you have to work with a conventional grill, it is best to use a thickness ranging from 80 to 100 millimeters.


After the balcony is insulated, it can be turned into a study or even a greenhouse, as well as a room for children's games and relaxation. This space will be conveniently used for household needs, for example, for storing all kinds of items and drying clothes.


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