4 ms·

What plastic box would that be?

• Gibbon1 7y ago
  All the closed cell plastic foam needed to meat passive house requirements. A point. All the energy savings disappear the moment you open a window.
  • sourcesmith 7y ago
    I think this has already been addressed by the sibling comment to my question. Insulation does not have to impermeable. Its purpose to prevent the loss of air carrying heat with it, not the transfer of moisture/humidity.
    • Gibbon1 7y ago
      If it's permeable then water will condense inside it and it will develop mold and deteriorate. That is the fate of all of these passive houses.
      • throw0101a 7y ago
        Not necessarily. Mold grows in certain conditions: food availability, right temperature, water/moisture. Ideally you would want your insulation outside of vapour barrier: * https://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall https://www.buildingscience.com/documents/insights/bsi-001-t... * https://www.youtube.com/watch?v=rkfAcWpOYAA&t=22m58s https://www.youtube.com/watch?v=rkfAcWpOYAA&t=22m58s * https://www.youtube.com/watch?v=hTwq-qUnr9I https://www.youtube.com/watch?v=hTwq-qUnr9I