FEUTRALIN® is a soundproofing underlay made from natural flax fibers, designed for floating and laminate flooring. It combines effective impact noise reduction and lightness.
Why Feutralin ?
Acoustic underlays must offer sound insulation, mechanical stability, and durability, while remaining suitable for industrial production. Synthetic or mineral solutions can be heavy or have limitations in terms of durability and environmental impact.
Advantages of FEUTRALIN® natural fibers:
- Acoustic performance: ΔLw ~18–21 dB depending on the flooring system
- Stability and durability: resistance to settling and keep the same properties under foot traffic
- Lightweight and easy to install: lightweight material, standardized thickness
- Bio-based solution: renewable and traceable flax fibers, reduced carbon footprint
EcoTechnilin supports manufacturers with thickness, basis weight, and architectural considerations to optimize acoustic performance and logistics.
Technical properties
Key technical features | |
|---|---|
| Composition | 100% flax |
| Weight | 600 g/m² |
| Roll dimensions | 1 m x 15 m |
| Impact Sound Insulation ∆Lw | 20 dB* |
| Sound Reduction Index Rw | 51 dB* |
| Thermal Resistance | 0,095 m2.K/W |
**According to CSTB report, tested under 7 mm laminate flooring
Custom Solutions
EcoTechnilin also manufactures custom underlays for distributors and manufacturers::
- Adjustable thickness, weight, and density
- Acoustic performance
- Customized formats and packaging
- R&D and industrialization support
Q&A
Is Feutralin compatible with underfloor heating?
Yes, our 100% linen Feutralin underlay is thin and has suitable conductivity. Check compatibility with the overall system.
Does the acoustic performance degrade?
No, the 100% linen felt structure limits settling and maintains absorption over time.
How does Feutralin compare to a standard foam underlay?
Similar or higher ΔLw, better mechanical stability, and a reduced carbon footprint thanks to natural fibers.
Is there natural variability in the fibers?
Controlled through fiber selection, preparation, and architecture, ensuring industrial repeatability.
