Noise insulation, vibration reduction, architectural acoustics

Soundline-dB Acoustic triplex

Acoustic triplex Soundline-dB is a specialized three-layer material for the construction of sound insulating timber frame constructions, linings and suspended ceilings. Soundline-dB consists of two heavy water-resistant gypsum fiber boards with a thickness of 8 mm, connected by an elastic layer of special vibro-acoustic sealant.

SoundLine-dB triplex (weighted gypsum-fiber sheet)
sheet with dimensions 1,200х1,200х16.5 mm (1.44 m2/sheet)
Price on request


Soundline-dB is used for sound insulation of timber frame constructions, linings and suspended ceilings.


Acoustic triplex consists of two weighted moisture-proof gypsum sheets with a thickness of 8 mm, connected by an elastically-resilient layer of special sealant.


  • eco-friendly - based of gypsum-fiber Board (fire resistance (KM1 fire safety class according to Federal Law of the Russian Federation №123))
  • unique sound insulation of timber frame constructions - up to 68 dB
  • savings on installation - replaces 2 layers of gypsum Board
  • total thickness of the acoustic triplex is 16.5 mm
  • the best results of sound insulation structures
  • stability of the vibro-acoustic properties for a long time (over 25 years)

SOUNDLINE-dB 16.5 MM + AKU-line-plasterboard 12.5 ммPhoneStar 12 mm + plasterboard 12.5 mmPlasterboard 12.5 mm +
Tecsound 70 4 mm + plasterboards 12.5 mm
Increase of additional sound absorption by claddings as compared with the lining
by the gypsum-fiber sheet of 12.5 mm thick + plasterboard of 12.5 mm thick, ΔRw
+ 2 dB 0 dB + 1 dB
Increase of the cost of the lining structure as
compared with the lining using gypsum-fiber sheet/plasterboard, sq.m*
+510 rubles +1040 rubles + 910 rubles
Fire hazard class КМ1 КМ5 (G4) letter of waiver
 * Without the cost of the frame, vibration-isolating fasteners, isolators and sound-absorbing material


The material has an acoustic, hygienic and fire certificates (fireproof class KM1). Acoustic triplex Soundline-dB patented in Russia and CIS countries.


Technical specifications

Dimensions: 1200 х 1200 х 16,5 mm
Surface density: 19,5 kg/m2
Bulk density: 1200 kg/m3
Weight: 30 kg

Acoustic specifications

Due to the elastic connection between rigid layers separated, the acoustic triplex «Soundline-dB» has a higher level of sound insulation in the frequency range, compared to the moisture resistant gyprum fiber board with equal of the surface density.

Technology of Installation

Acoustic triplex Soundline-dB is mounted on a metal frame partitions, linings and ceilings with screws for moisture proof gypsum board, and then covered with a layer of special acoustic gypsum board AKU-line with overlap joints.

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Certificates and patents (Russia)

The result of acoustic tests

Declaration of Conformity

Expert opinion