Cork-rubber composite flooring (3mm, 4.5mm, 6mm)
Agglomerated cork + recycled rubber flooring/underlay with density 600?700 kg/m3, thermal conductivity ?0.08 W/mK, and impact-sound reduction ?Lw 16?19 dB (3?4.5 mm).
Agglomerated cork + recycled rubber flooring/underlay with density 600?700 kg/m3, thermal conductivity ?0.08 W/mK, and impact-sound reduction ?Lw 16?19 dB (3?4.5 mm).
Cork-rubber composite flooring/underlay combines agglomerated cork with recycled rubber to provide impact-sound reduction and thermal insulation. Product datasheets for 3 mm and 4.5 mm cork-rubber underlays report density 600?700 kg/m3, tensile strength >800 kPa, compression at 0.7 MPa of about 15%, recovery >75%, and thermal conductivity around 0.08 W/mK (ISO 8301/ISO 7322). Acoustic results show ?Lw about 16?19 dB and IIC 47?52 depending on floor build-up (ISO 10140-3 / ISO 717-2; ASTM E492 / E989).
- Impact sound reduction ?Lw 16?19 dB and IIC 47?52 for 3?4.5 mm underlay (test dependent)
- Thermal conductivity around 0.08 W/mK (ISO 8301)
- Tensile strength >800 kPa with good recovery after compression (ISO 7322)
- 01 Impact sound reduction ?Lw 16?19 dB and IIC 47?52 for 3?4.5 mm underlay (test dependent)
- 02 Thermal conductivity around 0.08 W/mK (ISO 8301)
- 03 Tensile strength >800 kPa with good recovery after compression (ISO 7322)
- 01 Performance depends on floor build-up and thickness; verify supplier data
- 02 Fire performance not specified in available datasheet
- 03 Primarily documented as an underlay; finished-floor use depends on system spec
- Density
- 600-700 kg/m3 Cork-rubber underlay datasheet (3?4.5 mm).
- Specific gravity
- 0.45-0.50
- Porosity
- 45-55% %
- Water absorption
- <2% by volume (24hr immersion) %
- Hardness
- Shore A 60-75
- UV resistance
- Moderate (requires UV-resistant coating)
- Chemical resistance
- Excellent to mild acids/alkalis, poor to organic solvents
- pH tolerance
- pH 3-11
- Surface roughness
- Ra 10-20 μm µm
- Tensile strength
- >800 kPa ISO 7322 tensile strength (3?4.5 mm underlay).
- Compressive strength
- 15% at 0.7 MPa Compression at 0.7 MPa per ISO 7322.
- Flexural strength
- 200-400 KPa (increases with thickness) MPa
- Shear strength
- 0.8-1.2 MPa MPa
- Poisson's ratio
- 0.15-0.25
- Impact resistance
- IIC 58 rating, 16-20 dB reduction
- Creep resistance
- Recovery >75% after 0.7 MPa Recovery per ISO 7322.
- Embodied carbon
- -2.5 to +3.0 kg CO₂-eq/m²
- Carbon footprint
- -116 to +25 kg CO₂-eq/m² (often carbon negative)
- Embodied energy
- 25-40 MJ/m² MJ/kg
- Water footprint
- 150-200 L/m² L/kg
- Recycled content
- Contains recycled rubber Product-specific percentage not stated in datasheet.
- Renewable content
- 50-70% (cork component) %
- Circular score
- 85/100 (manufacturer take-back programs)
- Material cost (range)
- $85-100/m² + GST
- Material cost (per unit)
- $85-100/m² (3mm: $85, 4.5mm: $92, 6mm: $100)
- Lead time
- 24-48hr stock, 2-3 weeks local manufacture, 4-8 weeks import
- Lifecycle cost
- $4-8/m²/year over 25-year lifespan
- Annual maintenance
- $2-5/m² (cleaning and periodic resealing)
- Market availability
- Readily available major cities, 2-8 week lead time specialty
- Expected lifespan
- 15-30 years (thickness and use dependent)
- Maintenance interval
- Daily sweep, weekly mop, annual seal, 3-7 year refinish
- Warranty period
- 10 years commercial, 15-25 years residential