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Are you building an apartment block, a hotel or other similar structure which needs walls that will provide enhanced sound insulation?
VELOX have designed products specifically for these cases where increased insulation is achieved by increasing the concrete core.
The supporting wall of terraced houses or flats TT 19 double - the rate of silencing Rw = 77 db.
Load bearing partition walls without reinforcement to the quality of the concrete C 12/15 to C 25/30, with plaster on both sides with a thickness of 15 mm.
Thickness mm | Density kg/m2 | Thermal conductivity W/mK | Partial resistance m2K/W | |
Plaster | 15 | 1600 | 0,60 | 0,025 |
VELOX WSD | 35 | 750 | 0,13 | 0,270 |
Concrete core | 120 | 2200 | 1,23 | 0,100 |
VELOX WSD | 35 | 750 | 0,13 | 0,270 |
Mineral wool insulation | 30 | 105 | 0,04 | 0,750 |
VELOX WSD | 35 | 750 | 0,13 | 0,270 |
Concrete core | 120 | 2200 | 1,23 | 0,100 |
VELOX WSD | 35 | 750 | 0,13 | 0,270 |
Plaster | 15 | 1600 | 0,60 | 0,025 |
Weight of construction KG/M2 - 440
Thermal resistance overall wall make up M2/KW - 1,81
Heat transfer coefficient of the whole structure W/M2K - 0,55

Load bearing wall between flats GT 30 - the level of silencing Rw = 64Db.
Load bearing partition walls without reinforcement to the quality of concrete C 12/15 to C 25/30 and with plaster on both sides, with a thickness of 15 mm.
It is possible to build up to 15 storys / levels, depending on the structural analysis.
Thickness mm | Density kg/m2 | Thermal conductivity W/mK | Partial resistance m2K/W | |
Plaster | 15 | 1600 | 0,60 | 0,025 |
VELOX WS | 50 | 630 | 0,11 | 0,455 |
Concrete core | 215 | 2100 | 1,23 | 0,175 |
VELOX WSD | 35 | 750 | 0,15 | 0,233 |
Plaster | 15 | 1600 | 0,60 | 0,025 |
Weight of construction KG/M2 - 557
Thermal resistance overall wall make up M2/KW - 0,913
Heat transfer coefficient of the whole structure W/M2K - 0,853

Load bearing wall between flats TT 30 - the level of silencing Rw = 63Db
Load bearing partition wall without reinforcement to the quality of concrete C 12/15 to C 25/30 and with plaster on both sides with a thickness of 15 mm.
It is possible to build up to 12 storeys / levels, depending on the structural analysis.
Thickness mm | Density kg/m2 | Thermal conductivity W/mK | Partial resistance m2K/W | |
Plaster | 15 | 1600 | 0,60 | 0,025 |
VELOX WS | 35 | 750 | 0,15 | 0,233 |
Concrete core | 230 | 2100 | 1,23 | 0,187 |
VELOX WSD | 35 | 750 | 0,15 | 0,233 |
Plaster | 15 | 1600 | 0,60 | 0,025 |
Weight of construction KG/M2 - 584
Thermal resistance overall wall make up M2/KW - 0,704
Heat transfer coefficient of the whole structure W/M2K - 1,038

Load beaarring wall between flats TT 25 - the level of silencing Rw = 60db
Load barring partition wall without reinforcement to the quality of concrete C 12/15 to C 25/30 and with plaster on both sides, with a thickness of 15 mm.
It is possible to build up to 12 storeys / levels, depending on the structural analysis.
Thickness mm | Density kg/m2 | Thermal conductivity W/mK | Partial resistance m2K/W | |
Plaster | 15 | 1600 | 0,60 | 0,025 |
VELOX WS | 35 | 750 | 0,15 | 0,233 |
Concrete core | 180 | 2100 | 1,23 | 0,146 |
VELOX WSD | 35 | 750 | 0,15 | 0,233 |
Plaster | 15 | 1600 | 0,60 | 0,025 |
Weight of construction KG/M2 - 479
Thermal resistance overall wall make up M2/KW - 0,663
Heat transfer coefficient of the whole structure W/M2K - 1,038

Download Velox information Velox-Information.pdf