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How to install insulation Isolaine 25 for laminated flooring laminated, aluminum side to the ground?

I think you are confusing Isolaine (A-I-N-E) which is a material made of recycled textiles allowing insulation of floors and walls (especially acoustic), and Isolene (E-N-E) which is an underlay for floating floors. In the first case, it would eventually be used to insulate the attic non-convertible (and we would place the vapor barrier to the ground, so to the down.) As a subfloor for floating floors, the aluminum coating will be turned to the floor that we want to ask, that is to say to the top.

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