Chapter 4 of 4

Cork & Rubber Underlays

Cork and rubber underlays for applications demanding natural materials, specialist acoustic performance, or underfloor heating compatibility. Three products across two material families, covering a range of installation requirements.

  • EN 16354
  • EN ISO 717-2
  • REACH
  • RoHS

Products in this chapter

Material Overview — Cork

Cork underlays are produced from granulated natural cork bonded into a uniform sheet. Cork is a naturally renewable material with excellent compressive strength, thermal insulation, and acoustic damping properties. The cell structure of cork provides inherent resilience, allowing it to recover after compression and maintain its cushioning properties over extended service life.

Cork underlays are particularly suited for flooring installations in residential settings where natural materials, thermal comfort, and acoustic performance are priorities.

  • Naturally renewable material
  • Excellent compressive strength
  • Natural acoustic damping
  • Thermal comfort
  • Water absorption < 0.1%
Cork underlay material — natural cork sheet, textured surface view
CORK 20-AF

2 mm Cork Underlay with Aluminium Foil

2 mm natural cork sheet with aluminium foil backing moisture barrier. Premium natural material for acoustic and cushioning performance.

  • Laminate
  • Hardwood
  • Bamboo
  • Vinyl
CORK 20-AF — 2 mm natural cork underlay with aluminium foil
Specifications — CORK 20-AF
SKU / Product Code CORK 20-AF
Material Natural Cork / Aluminium Foil
Thickness 2 mm
Density 250 kg/m³
Roll Sizes (Coverage per Roll) Min. 10 m² — Customizable configurations available
Surface Coating Aluminium Foil
Thermal Conductivity (λ) 0.05 W/m·K
Thermal Resistance (Rd) 0.04 m²·K/W
Water Absorption < 0.1%
IIC Rating ★ 50 dB
STC Rating ★ 46 dB
EU Acoustic Testing (ΔLw) Testing in progress — EN ISO 717-2
Applicable Flooring Types Laminate, Hardwood, Bamboo, Vinyl
EU Standards Reference EN 16354, EN ISO 717-2
★ IIC and STC ratings are measured to North American standards (ASTM E492 / ASTM E90). EU-equivalent impact sound improvement (ΔLw, dB) per EN ISO 717-2 testing is in progress for the European market.

Key features:

  • Effectively reduces noise and adds cushioning
  • Self-sealing lip and tape system for easy installation
  • Built-in moisture barrier
  • Anti-crush tech to maintain shape and performance
  • Mold and mildew resistant
  • Excellent heat transfer performance
  • Suitable for use over concrete and wooden subfloor

Packaging options

  • Nude (unpackaged roll)
  • Pallet
  • Carton
CORK 20-P

2 mm Cork Underlay with PET Film

2 mm natural cork sheet with PET film surface.

  • Laminate
  • Hardwood
  • Bamboo
  • Vinyl
CORK 20-P — 2 mm cork underlay with PET film, UFH compatible
Specifications — CORK 20-P
SKU / Product Code CORK 20-P
Material Natural Cork / PET Film
Thickness 2 mm
Density 250 kg/m³
Roll Sizes (Coverage per Roll) Min. 10 m² — Customizable configurations available
Surface Coating PET Film
Thermal Conductivity (λ) 0.05 W/m·K
Thermal Resistance (Rd) 0.04 m²·K/W
Water Absorption < 0.1%
IIC Rating ★ 50 dB
STC Rating ★ 46 dB
EU Acoustic Testing (ΔLw) Testing in progress — EN ISO 717-2
Applicable Flooring Types Laminate, Hardwood, Bamboo, Vinyl
EU Standards Reference EN 16354, EN ISO 717-2
★ IIC and STC ratings are measured to North American standards (ASTM E492 / ASTM E90). EU-equivalent impact sound improvement (ΔLw, dB) per EN ISO 717-2 testing is in progress for the European market.

Key features:

  • Effectively reduces noise and adds cushioning
  • Self-sealing lip and tape system for easy installation
  • Built-in moisture barrier
  • Anti-crush tech to maintain shape and performance
  • Mold and mildew resistant
  • Excellent heat transfer performance
  • Suitable for use over concrete and wooden subfloor

Packaging options

  • Nude (unpackaged roll)
  • Pallet
  • Carton

Material Overview — Rubber

Rubber underlays are produced from recycled and virgin rubber compounds, delivering exceptional durability and high-density sound damping for demanding applications. The high density of rubber (up to 880 kg/m³) provides structural stability and excellent impact sound isolation. Rubber underlays are particularly suited to heavy use areas, commercial installations, and applications where long-term compression resistance is critical.

  • 880 kg/m³ density
  • Excellent durability
  • Impact sound isolation
  • Under-vinyl & tile compatible
  • Excellent anti-slip performance
  • Water absorption < 0.1%
RUB 20-A

2 mm Rubber Underlay

2 mm high-density rubber underlay. Superior structural stability and impact sound isolation for demanding residential and commercial flooring applications. No film coating.

  • Vinyl
  • Tile
  • Stone
  • Hardwood
RUB 20-A — 2 mm rubber underlay (representative image)
Specifications — RUB 20-A
SKU / Product Code RUB 20-A
Material Rubber
Thickness 2 mm
Density 880 kg/m³
Roll Sizes (Coverage per Roll) Min. 10 m² — Customizable configurations available
Surface Coating None
Thermal Conductivity (λ) 0.20 W/m·K
Thermal Resistance (Rd) 0.01 m²·K/W
Water Absorption < 0.1%
IIC Rating ★ 64 dB
STC Rating ★ 62 dB
EU Acoustic Testing (ΔLw) Testing in progress — EN ISO 717-2
Applicable Flooring Types Vinyl, Tile, Stone, Hardwood
EU Standards Reference EN 16354, EN ISO 717-2
★ IIC and STC ratings are measured to North American standards (ASTM E492 / ASTM E90). EU-equivalent impact sound improvement (ΔLw, dB) per EN ISO 717-2 testing is in progress for the European market.

Key features:

  • Excellent in performance and durability
  • Specially designed for use under vinyl, tile, stone, and hardwood flooring
  • Excellent anti-slip performance

Packaging options

  • Nude (unpackaged roll)
  • Pallet
  • Carton