VELAPHONE is an acoustic membrane made of polyester felt and a vapour barrier film (black film). It is specially designed to be mainly used on wood structures under a layer of 11⁄2 in (38 mm)-thick self-levelling concrete.
BENEFITS
- Provides structural waterproofing while concrete is poured.
- Prevents a too-rapid evaporation of water from the concrete to improve curing
- Resists crushing; preserves its acoustic properties.
TECHNICAL DATASHEET
| Dimension | 1m x 20m |
| Coverage | 20 m2 |
| Thickness | 3.4mm |
| Weight | 11.5kg |
| IIC (Impact Insulation Class) | 56 – 59 (estimated) |
| STC (Sound Tranmission Class) | 53 – 57 (estimated) |
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