Blunder masters in the insulation of the loggia

All masters know that adjacent to the living room wall of the loggia, you can not insulate. But this rule has an exception. If it is not taken into account, we expect all the same ill-fated freezing, condensation and mold.

When the outer face line forms a single loge facade home enough to sheathe heater sidewalls enclosing the display beneath the window, floor and ceiling. But if the balcony side walls bulge out from the facade, things are different.

Weak spot, vulnerable to frost, it is the outer wall of the house, which is adjacent to the wall of the loggia. Not to be unfounded, backed up this statement calculation.

We have calculated how thick insulation to takeTo be warm in the cold on the balcony. Here, we use the same formula of SNIP II -3-79 * "Building Heat Engineering".

Consider two cases. The first will calculate the thermal resistance of the insulated (red line). The second for a calculated take a plane adjacent to the insulation (blue line). In fact, it is the concrete face of the wall, which connects the street with a balcony and serves a cold bridge.

Insulated part:

R1 = 1 / 8.7 + 0.16 / 2.04 + 0.1 / 0.043 + 1/23 = 2.5

Border with insulation part:

R2 = 1 / 8.7 + 0.26 / 2.04 + 1/23 = 0.29

At the rate we see that the heat resistance of the "weak" place almost nine times less. In the bitter cold in this corner of the first drops of condensation will appear and then the frost.

You are reading is not just theoretical assumptions. I checked them in practice. First insulated wall as in the above image. Waited night frosts -10 degrees. Pyrometer shown in the corner of a temperature difference of 12 degrees. The temperature in a heater was 23 degrees, and at the adjoining portion of the concrete - 11 degrees.

After that I brought a heater to the doorway. In winter, in the most severe frost to measure the temperature at different points of the loggia. The difference measurement pleased me. She was +/- 3 degrees at different sites.

I have a loggia is insulated and plastered with cementitious adhesives on the grid. But with a fine finish is not yet in a hurry. There are a number of "experiments" that we must carry out in order to show you how behaves insulation in practice. Here is warmed in life, unlucky for many a corner:

When I see on the Internet, something interesting and useful, be sure to share with friends on social networks. Are you also share three more interesting and useful articles:

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