What to do with a aerated concrete wall insulated with EPS?
I recently thought about finishing/insulating the basement from the outside and realized with dismay that the insulation of my main facade of the house is not done correctly.
The backstory is this. An old frame house had a gas-silica 2-story addition added to it and covered the whole thing with a common roof. During the construction of concrete armored belts at 1 floor level and the same of the corners of the building and the lintels over the windows, doors. The old half of the house was hardly touched.
Later, we decided to clad the exterior with siding and at the same time to insulate. On the old, wooden part of the house used rockwool 100 mm to the new, gas silicate – EPS, on the advice of the builders (like so warmer will be).
Now I understand the mistake about the vapor tightness of EPS, but really wanted to insulate possible thermal bridges of the concrete columns and armopoyas.
It turns out we have been living like this for three years. House – Permanent housing, gas heating. Gas silicate 500 mm. Placed flat, ie wall thickness – 50 cm + 5 cm EPPS + siding with a gap of 1 cm. Interior finish – plaster + wallpaper.
How can we now use non-destructive methods to check the condition of the gas block? Do not mold, do not get wet, etc.? ?
Visually on the interior decoration – plaster no fungus, the walls do not freeze. The windows and doors all dry.
Is it worth breaking and redoing, if there is no problem VISUALLY? Or how to check it, maybe test drilling the wall for dampness ? .
By the way, there are no wet rooms in this part of the house, only 2 children's rooms and the living room, so no steam in those particular rooms.
Answer
This is while the house is not heated, and when they start to heat, then all the moisture from the house will go through the blocks, and depending on the fastening of the ESPS to the wall, will flow down or stay on the outside, accumulate in the block worsening thermal conductivity. It is possible that the moisture will pass through the ESPS to the outside, because it also breathes. This is my opinion.
P. S. Polyethylene foam is foam, so the moisture will not even get to the evaporated polystyrene boards, and will remain in the blocks. All block manufacturers recommend that their products breathe!
P. S.It will help to have good ventilation in the house.
