Grei is an advanced high performance...
Grei is an advanced high performance impact sound insulation underlayment for use under concrete floating screeds. Made from EPDM granules - it is the best acoustic underlay available. 8mm thick.
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Grei is manufactured from EPDM granules bonded to a protective anti-stretch backing. The acoustic performance according to EN 12354 for impact noise is up to ΔLw=30dB. Grei is ideal for use with underfloor heating systems and is 8mm thick. Grei 8 is a direct equivalent and exceeds the performance of Regupol E48 underscreed acoustic flooring.
|Impact sound reduction improvement (ΔLw)||30dB|