Insulate the wall with polyurethane from the outside - how to make the right design

Gusevsky Andrey Anatolyevich

Insulate a cold wall outside with polyurethane

The system of external wall insulation can be different, but also mandatory. After all, it is comfort indoors and at the same time saving on payment.

Today we will tell you how to design the insulation of external walls with polyurethane. After all, this is a wonderful material for the performance of this work. Also on the video in this article and photo you look at the most difficult areas of work and after that you can do everything yourself.

Pros and cons of PPU

The methods of insulation of external walls are diverse, but you should definitely pay attention to polyurethane foam. This insulation began to be used not so long ago, but already has many of its admirers.

In some cases, it is simply irreplaceable:

Another big plus is that in the process of conducting construction work, this insulation material is enough to apply to the surface by spraying. This type of work does not require a lot of time and any specific skills. There is no need to purchase additional adhesives, as PPU in the light is independently attached.

We make polyurethane foam insulation

The design of the insulation of the outer wall with this material is not complicated. Here you just have to be careful and follow the instructions for the work. They can be insulated not just walls, but also insulate the outer wall of the loggia. Moreover, it is much easier to do than other materials. For example, tiles to warm the outer wall will not work, it is not a heat-resistant material.

The best option would be insulation at the construction stage, in other cases it is carried out during the repair. If you want to insulate only a certain area, this will not cause problems. You can also insulate the wall of the high-rise building from the outside. But before starting work, you need to consider some factors. For example, weather conditions, humidity level, thickness of beams and walls.

Calculation of insulation for an external wall

Attention: The technology of insulation of external walls is done taking into account the thickness and length, this is mandatory. After all, the larger the area, the faster and heat transfer will occur.

How to insulate internal walls

Polyurethane foam is actively being introduced into the sphere of work of craftsmen who insulate apartment buildings from the inside.Not always the owners can turn to specialists for help, because polyurethane foam insulation can be done on their own. In the process, you will need to provide good ventilation. How to insulate the outer walls will now be considered in detail.

Scheme of internal insulation

When can I do internal insulation:

• This option is used when the city authorities prohibit changing the facade of a room;
• Also, if there is a shaft behind the wall, it can be an elevator or communications.

Let's look at what you need to pay attention to when warming:

• When conducting work, the wall should be completely dry. Otherwise, work is not carried out;
• Be sure to apply a waterproofing layer, this layer will separate the interior from the wall;
• The insulator is selected with a minimum of vapor permeability and maximum moisture resistance;

Caution: The insulator is never put in a joint. It is only necessary to do an overlap.

External insulation

Some use plates to warm the walls from the outside, but this is insulated and has a weight and it must be attached to plastic fungi. Not always a wall can withstand so many holes. Therefore, this option gives you the opportunity to conduct insulation and without resorting to installing this design. Although it is worth saying that the final cladding in this option is also required.

There are several stages of work:

Plane preparation Doing the preparation	Standard preparatory process for walls. The preparation before coating includes the usual plaster wall cleaning, paints, wallpaper and other coatings. Such wall cleaning is essential. For otherwise, the insulating agent does not adhere well. Warming the walls with your own hands is unnecessary to align them too much.
Spraying the surface of the walls of polyurethane foam Material application	When the surfaces are cleaned, PPU can be applied. Layer thickness depends on the overall alignment result. Sometimes a layer can be made larger, and where required, wider. When they figured out the alignment, then comes the reinforcement.
Screed reinforcement We make reinforcement when applying screed	After the polyurethane has completely solidified, it is necessary to apply a layer of plaster on it (seeHow do plastering do it yourself) In this case, it is worth doing reinforcement. This will greatly enhance coverage.
Application of finishing material Final finish	After all, you need to apply the lining. Instructions for fastening any facing material are on the pages of our site. There is no point in talking about each material, because this will be a separate article.

Caution: In the process, make sure that a drop of polyurethane foam does not fall where it is unnecessary. For in the case of purification, even acetone does not help.

No matter how you insulate your walls, but if there are old windows and doors that let cold pass through, the above work may be useless. Nevertheless, PPU can be used for inaccessible openings in the area where it blows the most.

Stucco polyurethane foam

The discussed thermal filler has some peculiarity. If you spray a layer of PU foam under the plaster, the remaining surface can take the previous shape of the insulation layer. The evenness of the layer will depend on the skill of the application master. But due to errors made, the surface may become rough and bumpy.

The scheme of applying plaster on polyurethane

• In case of detection of various irregularities, it is worthwhile to carefully get rid of them. For this you just need to wipe them right away. But if the layer is small, then we are waiting for complete drying and grouting is already done on a new layer.
• It is important to note the fact that in some areas of the coating layer it will be difficult to eliminate defects that have arisen during the spraying process. Therefore, we focus on the more visible mistakes made.
• After the applied foam has hardened, a layer of a special primer is applied, which allows to increase the level of adhesion with the plaster. An alkali-resistant mesh is installed for applying the base plaster. After it dries, the work progresses beyond the third final coating.

What professionals advise

Before proceeding to brick house insulation It is recommended that you familiarize yourself with the basic techniques from professional workers from the construction industry.

Pay attention to the following aspects:

• When the walls or floor are insulated, they do it outside;
• As long as the insulation material is in operation, it is important to protect it from moisture;
• It is important in advance to get rid of bumps and other cavities, because of which the insulation will not lie flat, and later the wall or floor will let air through;

In general, not only polyurethane foam can insulate buildings. In particular, it all depends on the characteristics of the structure itself. Nevertheless, PPU is a rather alternative option, which provides good quality and favorable price.

This material is distributed not only among builders, but self-taught enthusiastically can use this insulation. Convenience in installation greatly facilitates the operation of PPU. For many years, the service will ensure the preservation of heat in the room on an ongoing basis. To insulate the wall from the outside in this embodiment, you can end with a simple siding (seeOptions for decorating houses with siding: do it yourself) There are separate articles on this subject on our website and after reading them you can do everything yourself.