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I'd like to put some EVA foam under the carpet (above the floorboards) on the first floor bedroom of my house, to dampen the sound of foot steps. The fire safety building regulations (section B2) say that the provisions do not apply to upper layers of floors since they don't play a major part in the spread of fires. Does that mean it is ok to use or is there something else I am missing?

  • Be aware that installing unapproved padding under carpet will often void the warranty. Too much movement will lead to tearing over time. Too little results in early compression damage. – isherwood Jun 3 at 18:29
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    Carpet pad is already foam, and there are premium choices. Do you expect the EVA foam to be that much better? – JPhi1618 Jun 3 at 18:39
  • @JPhi1618 I don't expect that it will be any better than carpet foam, but I have already bought lots of EVA foam and now wondering if I can use it. – christiaantober Jun 4 at 7:19

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