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TECSOUND
High-density acoustic membrane | airborne sound insulation
2,010
Density (kg/m³)
Up to 10
Surface mass (kg/m²)
B-s2,d0
Reaction to fire
Bitumen-free
Viscoelastic polymer
About TECSOUND
TECSOUND is a high-density (2,010 kg/m³) synthetic acoustic membrane developed by SOPREMA, made of an asphalt-free viscoelastic polymer with mineral fillers. Its high mass delivers excellent sound insulation even at a thin profile.
Unlike bitumen-based products it is odourless and does not harden over time, maintaining long-term performance. It can be applied to walls, ceilings, floors and pipes.
Supplied in surface-mass grades TECSOUND 35 / 50 / 70 / 100 (3.5–10 kg/m²). The self-adhesive TECSOUND SY series adds a peel-and-stick layer for easier installation.
Applications
Lightweight walls
Improves insulation of plasterboard partitions
Ceilings
Blocks noise transfer in ceiling cavities
Floors
Cuts airborne sound through floor structures
Pipes & ducts
Reduces fluid noise (TUBE S)
Key Features
High-density synthetic material
Viscoelastic polymer at 2,010 kg/m³ for excellent insulation at low thickness.
Bitumen-free
No asphalt content — odourless and environmentally friendly.
Reaction to fire
Euroclass B-s2,d0 — low smoke, no flaming droplets, self-extinguishing.
High flexibility
Stays flexible and conforms to substrates and curved surfaces.
Durability
Viscoelastic membrane accommodates structural movement without cracking.
Water & vapour resistant
Negligible water absorption; does not rot.
Technical Data
Density2.01 g/cm³ (2,010 kg/m³)
Surface-mass grades35 / 50 / 70 / 100 (3.5–10 kg/m²)
HardnessShore A 30 ±10
CompositionBitumen-free viscoelastic polymer + PP fleece
Reaction to fireEuroclass B-s2, d0 (self-extinguishing)
Water absorptionNegligible
Documents
Find datasheets (TDS), safety data sheets (SDS), certificates and catalogs — including official SOPREMA documents — in our Resources center.
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