Fantastic PUR floor underlay with the best noise dampening properties. The back has an aluminum vapor barrier that protects against moisture from below. 3 mm thick.

Thickness: 3.0 mm.
Format: 5.5 x 1.0 metres.
Per roll: 5.5 m²
Bearing capacity: 20 tons/m²
Compensation of unevenness: 1.25 mm
Suitable for underfloor heating: Yes
Sound insulation/Through sound: Up to 19 dB
Footstep sound reduction / Reverberation: Up to 29%

REMEMBER: aluminum tape must be used for joints that do not overlap. You will find that here.
Find your installation instructions here.