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Floor impact-noise underlay | ΔLw up to 22 dB
VELAPHONE is a resilient underlay installed between the slab and the floor finish to absorb impact energy and reduce floor impact noise (footsteps, dropped objects).
The range includes Vélaphone Confort (ΔLw 19–20 dB, 2.5 mm) and Vélaphone Fibre 22 (ΔLw 22 dB, 3.4 mm) — sold in Spain as Texfon. It is made of non-woven polyester (200 g/m²) on a bitumen / thermoplastic-polymer support, compatible with underfloor heating and certified to QB / NF DTU 52.10.
Inter-floor impact noise
Footfall noise control
Guest-room privacy
Quiet environments
Reduces floor impact noise by up to ΔLw 22 dB (Fibre 22).
2.5 mm (Confort) / 3.4 mm (Fibre 22).
QB (Qualitel) certified; complies with NF DTU 52.10.
Compatible with underfloor heating systems.
Find datasheets (TDS), safety data sheets (SDS), certificates and catalogs — including official SOPREMA documents — in our Resources center.
Browse ResourcesAccredited testing for Korea’s floor-impact-noise insulation grade is planned for the SOPREMA floor-impact solution (VELAPHONE/TEXFON underlay and floor systems). Official Korean grade reports will be published here once available.
View Korean grade standardsGet product selection and technical support tailored to your project.