PR 3.5

PR 3.5
  • Sound insulation for the backing of exterior and partition walls
  • Reduces airborne noise
  • Improves room comfort

PR 3.5 is a complex made up of a sheet of synthetic EPDM rubber of 3.5 kg/m2 that has POROMIX 20 mm thick felt adhered to one of its sides.

Acoustic reduction

PR 3.5 installed between the 14 cm brick wall and the metallic structure on which a 13 mm panel of laminated plaster is fixed gives the following results in acoustic reduction:

R’ (C, Ctr) = 52 (-2; 4) ISO 717-2
R’ (A) = 50 dB(A) NBE CA-88

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Building system

Building system EN


Easy to install

Certificated product