Cracks in the insulation of facades. What is the reason?

Before you, my friends, unpleasant picture of a pie insulation, especially when you consider that this is the 4-5th floor. He stood façade after completion of the work only one year. After the first winter went horizontal cracks, and increased even more over the next two years. It is obvious that it was not in the house, it shrinks and shifts, and in violation mounting technology. But there is another concomitant moment - position.

The wall on which there was a problem with the insulation cake has a southern exposure. Yes, it is this I would particularly like to draw attention.

Many cases of problems on the facade insulation foam after having it on sunny side, which heats up in the summer and winter temperatures suffering from fulminant differences.

In the winter, even in conditions of frost in the sun heats up a facade, too, but as the sun disappears rapidly cools and... such a result. Sometimes thermal jumps occur several times a day.

On the causes of the problem at a distance it is difficult to say, but something we distinguish:

• If insulated south side above the second floor, on the adhesive and reinforcing mixture is not worth saving.
• The normal density of reinforcing mesh for the foam cake from 160 g / sq. m. This lower threshold, one can say, economy level. To improve safeguards should be taken to reach a higher density.

Good reinforcing mesh is not brittle on bending. It's worth checking with the purchase, several times it bent in different directions. If the field bending it whitens once, then wet her exactly tear!

• The gaps between the sheets of foam on either side of the building, especially in the south, should not be large, and they can not be filled with plaster. This is also one of the reasons for the appearance of cracks as the plaster is very rigid and not as a heater reacts to heat.
• The gaps should be tightly clog foam or fill with foam, which is then carefully cut with a knife.
• Weakly protected facade with poorly clamped joints between sheets can accumulate moisture in such places that, when freezing the foam breaks ranks (Looks like a facade that it happened in a picture). Primarily it is the absence of a liquid impervious, e.g., latex decorative coatings.

Here they are, multilayer "pies" happen! South side of the error in the insulation does not forgive!

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