Mapesonic CR Underlay
$277.00
| Material | Recomposed cork and rubber, polyurethane bound |
|---|---|
| Thickness | 4 mm |
| Roll length | 10 m |
| Coverage | 10 m² per roll |
| Thermal resistance | R 0.048 m²K/W |
| Emissions | EMICODE EC1 PLUS |
| Acclimatisation | 24 hours on site before installation |
Acoustic performance belongs to the finished assembly, not to any one layer in it. On an inter-tenancy floor the build-up has to be designed by an acoustic engineer and confirmed by testing.
Mapesonic CR is an acoustic underlay designed to reduce impact (footstep) sound transmission through the floor, in both residential and commercial environments. Crafted from a blend of recycled rubber and cork, this 4 mm thick underlay suits installation beneath ceramic tiles, stone, resilient flooring, and multi-layered wooden floors.
Key features
- Material: Made from recomposed cork and rubber bound with polyurethane.
- Thickness: Supplied in 4 mm thickness.
- Dimensions: Supplied in rolls, each roll measuring 10 meters in length.
- Acoustic performance: Mapei’s technical data sheet publishes a 10 dB reduction in footstep noise (ΔLw, ISO 10140-3, formerly ISO 140-8). Read the condition Mapei attach to it: that figure was obtained with the 2 mm product under ceramic tile flooring, not the 4 mm under timber supplied here, so treat it as indicative of the material rather than as a result for this build-up. It is an improvement figure over a reference floor, not a New Zealand IIC rating, and it does not by itself demonstrate NZBC G6 compliance. Mapei technical data sheet (PDF). Acoustic performance belongs to the finished assembly, designed by an acoustic engineer and confirmed by testing. Read: what NZBC G6 actually requires.
- Thermal resistance: Mapei publish a thermal resistance of R 0.048 m²K/W.
- Emissions: Certified EMICODE EC1 PLUS, which is GEV’s classification for very low VOC emissions from flooring installation materials. This is an emissions classification, not a health or safety approval.
Applications
Mapesonic CR is used under a range of flooring surfaces where acoustic comfort matters, in both residential apartments and commercial spaces such as hotels and office buildings. Where the floor is an inter-tenancy boundary, the build-up must be designed by an acoustic engineer.
Installation and maintenance
To ensure optimal performance, acclimatize the underlay in the installation area for 24 hours prior to application. The sheets can be easily cut to fit the room’s dimensions and secured with appropriate adhesives. Maintenance is simple, requiring only basic cleaning to keep the underlay in top condition.
Sold by the roll; each of which covers 10m2.
Construction: Recomposed cork and rubber bound with polyurethane
Width: 1 m roll
Length: 10 m roll (10 m² per roll)
Thickness: 4 mm
Installation: Loose laid beneath ceramic tile, stone, resilient flooring and multi-layered wooden floors; acclimatise 24 hours before laying
- Thickness: 4mm
- Net Weight: 32.2KG/ roll
- Length: 10lm (4mm)
- Width: 1lm
- Thermal Resistance R (m2 K/W): 0.024 (2mm), 0.048 (4mm)
- Material: Recomposed cork and rubber bound with polyurethane
- Colour: brown-black
- Packaging: Rolls
- EMICODE: EC1 Plus – very low emission
- Elongation at failure EN ISO 1798 (%): 20
- Tensile Strength EN ISO 1798 (N/mm2): 0.6
- Reduction of noise from footsteps in compliance with ISO 10140-3 (former ISO 140-8): 10dB (obtained with Mapesonic CR 2mm and ceramic tile flooring)
