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In the old days, this room turned into a "warehouse of forgotten things," and the question of how to insulate the balcony did not arise. Moreover, in the cold season, it turned into a kind of cellar – preservation was loaded onto it, which was actively consumed in winter. However, now, having decided how and with what to insulate a balcony or loggia, it can be used throughout the year as a compact gym, study or cozy lounge area with a wonderful view outside the window.

But what is more effective - to insulate the balcony from the inside or outside? It all depends on the quality of the materials chosen and the work performed: if everything is done at a high level, then insulation from the inside, which can be done without the involvement of specialists, will maintain the optimum temperature.

How to insulate the walls of the balcony inside

Deciding how best to insulate the balcony inside, it should be remembered that the main indicator of the effectiveness of the insulation is thermal conductivity. The lower this value, the higher the temperature will be. In addition, material characteristics such as

are important.

• environmental friendliness;
durability;
• strength;
ease of use.

What do you need to insulate a balcony? Materials can be different.

Mineral wool

Perhaps the most popular raw material. It is environmentally friendly and fireproof, has low thermal conductivity (0.035-0.039 W/m.K) and good sound insulation. It is easy to work with and can be molded into almost any shape. It has a low cost.

Disadvantages:

• Easily absorbs moisture, while losing its operational properties. Therefore, waterproofing is required;
you can insulate a balcony / loggia with mineral wool only in dry weather;Foam

How to insulate the walls on the balcony with this material and what are its characteristics? It is very lightweight due to its composition: 2% are antiprenes, which ensure its fire resistance, styrene and various fillers. The other 98% is air!

The advantages of this material are significant:

strength;
• low thermal conductivity (0.037-0.043W/m.K);
light weight; moisture resistance;.
• ease of operation (blocks are easy to cut).
A noticeable drawback is low sound insulation.

Often, to insulate and sheathe a balcony with your own hands, choose a layer 100 mm thick (or 2x50 mm).

Extruded polystyrene foam

The composition of the material is similar to that of polystyrene, but the manufacturing technology is different. EPS is manufactured under high pressure, which gives the material great strength. Its performance characteristics:
• high level of strength;
• light weight;
• moisture resistance;
low thermal conductivity (0.029 – 0.043W/m.K);
• fire safety;
environmental friendliness;ease of use.
A noticeable drawback is the high price.

Polyurethane foam (liquid insulation)

It is very convenient to insulate the balcony inside: due to its liquid state, the substance enters all the cavities. It
• ecological;
• refractory;
durable;has low thermal conductivity (0.021 W/m.K);no joints when applied; moisture-repellent;soundproof.

Disadvantages:

• the need for special equipment for its application;
• sensitive to sunlight;

installation is possible only in warm, dry weather;high price. PinofoilIt is a foamed polyethylene covered with aluminum foil on one or both sides. Its advantages are as follows:

• refractoriness;
plasticity;
• small thickness;
environmental friendliness;low thermal conductivity (0.037-0.051 W/m.K);ability to reflect heat;ease of installation;ability to repel moisture;soundproofing properties.

The material has specific disadvantages: due to its softness, it is difficult to make a topcoat. Drywall is required, which will allow plastering the walls.

How to insulate the walls on the balcony or loggia, decide for yourself - depending on your own technical needs and financial capabilities.

How to insulate the floor on the balcony

Having decided to insulate the floor on the balcony, you first need to put some kind of waterproofing material:

• penofol (the reflective side should be at the top);
• polyethylene;
• bitumen-based mastic.

To insulate a balcony with polystyrene foam or pinolex, remember that it is advisable to glue the joints between the sheets with foil tape. If you choose mastic, it will take a day for it to harden.

When insulating the floor on the balcony, the waterproofing can also be fixed to the walls.

After that, the lags are installed, which can be metal beams or wooden beams.

When deciding how to insulate the floor on the balcony, listen to experts who recommend opting for wooden logs with a moisture content of less than 12%. They must be treated with a primer or antiseptic.

To insulate the floor on the balcony with your own hands, you need to remember that the optimal height of the lags should be 100-150 mm, and the distance between them should be equal to the width of the selected insulation. To fix the bars in the required position, as well as to close the gaps between the lags and the wall, polyurethane foam is used.

After that, a heat-insulating layer is laid - fiber or in the form of plates. It is up to you to decide how best to insulate the floor on the balcony, but remember that if the insulation is laid in several layers, each subsequent layer should be offset so that the seams between the plates do not match. Make sure that there are no gaps between the joists and the thermal insulation layer. Otherwise, the question of whether to insulate the floor on the balcony will sound meaningless, since the heat will escape through these «cold conductors».

To protect against condensation, a vapor barrier layer is required.

The base for the finish coating (laminate, carpet or linoleum) is fastened with screws. These can be chipboard or fiberboard sheets, plywood or boards.

How and how to insulate the ceiling on the balcony?

Whether it is necessary to insulate the ceiling on the balcony is an ambiguous question, especially when it comes to the loggia. After all, there is a closed room above - a neighbor's loggia (unless we are talking about the upper floors). But if you want to create a "thermos effect", you should still think about how to insulate the ceiling on the balcony with maximum efficiency.

One of two technologies is used:

without a frame;
1. with a frame.

Regardless of the method chosen, it is necessary to apply a layer of antiseptic to the surface to protect the ceiling from mold.

How to insulate the ceiling on the balcony? The optimal materials due to their low weight are:

The following are considered to be optimal

• mineral wool;
• polystyrene foam;
• foam.

To insulate the ceiling on the balcony without a crate, the work surface is cleaned of dirt and treated with a primer. Glue is applied around the perimeter and in the center of the foam sheets (it should not contain toluene). The sheets are glued to the ceiling and fastened with dowel mushrooms. The joints are sealed with a mounting film.

If you decide to make a frame, you will need dowels and wooden blocks. A heat-insulating layer is laid in the crate - foam or mineral wool, which must be fixed with a mounting film. The foam holds without additional fixation.

The final finish can be plastic panels, lining or drywall.

Work on the insulation of the loggia/balcony should start from the ceiling, move on to the walls and finish with the floor. Before starting, it is necessary to accurately measure all surfaces and prepare the insulation: cut it into pieces of appropriate sizes.

As an additional source of heat, you can use a «warm floor» system or an electric heater.