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I have moisture problems in my house. The cellar is just below and is very wet, ground floor (we see mold). I started by ventilating (there are 4 rooms with small windows and the air goes from room to room because the walls do not reach the ceiling.Is it enough? Must I put an extractor or 2? cellar is 100 m2 Second problem for the walls of my house that are wet (traces of molds) up to 1 meter high I removed the Depron that had on the walls fell the plaster that did not no, I think put BA13 plates with rails and leave a gap between the wall and the plates to circulate the air, is this the solution? Do I have to put an insulator between the wall and the Placo (my wall make 80 cm) or just a vacuum?

Moisture problems are always difficult to solve. My analysis is as follows: 1. The humidity of your walls comes from the cellar, by capillarity (the walls pump like a blotter). 2. The humidity of the cellar can have several origins, including poor ventilation and lack of extraction that you must achieve. 3. To clean it up, start by placing two good electric dehumidifiers: it would not be surprising that in the first days, they "pump" 20 liters of water each. 4. If this is not enough, clean up your foundations: drain around the house if you can, seal the base of the foundation below the level of the earth. 5. Do not double your walls until you have solved your moisture problem; and of course when this is the case, place an insulation between the plasterboard and the wall (80 cm = a few centimeters of glass wool!).

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