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I am in the process of redoing the electricity of my house (1960, no earth, no standard wire colors, etc.) For the floor below the attic that can be converted, electricity goes through these attics. I had to remove a floor board and suddenly, I realize that I can isolate... Indeed, my attic is with parquet, nailed on joist. Further down, of course, the brick for the floor / ceiling of the floor below. My question is the following: - It is absolutely necessary (recommended what), that I take the opportunity to isolate (more currently, no insulation roof: apparent tiles), that I will isolate later. - with what to isolate between the floor and the brick. I had read somewhere a danger (if we do not do the right thing), at the level of a risk of humidity. So here it is: what should be done preferably, what materials (LDV roll for example?), And especially what should not be done?

With a view to future development, it is easy to isolate the floor of this roof, which has a significant gap between the floor and the ceiling of the lower floor. At first, this insulation is interesting thermally (the roof is not insulated). In a second phase, once the isolated attic at the level of the roof, the insulation of the soil will remain valid, for the acoustic comfort between the first floor and the attic.
The simplest is to retain a loose mineral wool (glass wool or rock wool), implemented in the thickness of the floor, by partial disassembly of the blades thereof.

On the same topic

  • Questions answers
    • Can a floor be made of loose insulation?
  • DIY tips
    • Insulate the floor of semi-convertible attic
    • Insulation of lost attics (blown wool)

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