Drainage systems & sound insulation: What you need to bear in mind
Noise is generated around floor drains, for example, due to foot traffic or the flow of water. To ensure proper sound insulation in buildings, it is therefore essential to ensure that the drains installed do not exceed the maximum permissible noise levels. In addition to the sound-insulating properties of the drains themselves, external factors such as architecture, building materials and insulation materials must also be taken into account. Here you will find the key facts about sound insulation relating to floor drains.
Sound insulation requirements for floor drains
The minimum requirements for the sound insulation performance of floor drains and the procedure for determining noise levels are set out in the specifications defined in the DIN 4109 standard. In addition, the VDI 4100 guideline for sound insulation in residential buildings recommends values that deviate from the standard specifications.
Sound insulation properties of KESSEL drains
KESSEL drains have excellent sound insulation properties, as confirmed by measurements carried out by the Fraunhofer Institute in Stuttgart. The values measured for all drains are well below the most stringent requirements of the DIN 4109 standard and the VDI 4100 guideline. (You can view the relevant test reports on the respective product pages.) Furthermore, the sound insulation effect can be increased by a further 30% with the Quick-Fit passage seal, which is available as an accessory.
The Ultraflat 54 Fraunhofer Institute Certificate P-BA 206/2018
- Tiles
- Joint sealing and tile adhesive
- Screed
- footfall noise insulation
- Concrete floor
- 4 mm PE protective cover
The Ultraflat 79 Fraunhofer Institute Certificate P-BA 205/2018
- Tiles
- Joint sealing and tile adhesive
- Screed
- footfall noise insulation
- thermal insulation
- Concrete floor
- 4 mm PE protective cover
KESSEL Test Reports | Standard / Directive | Rear underfloor (diagonal) | DIN 4109 | VDI 4100 |
| The Ultraflat DN 50 + slotted cover without installation aid Test report: P-BA 236/2013 | DIN 4109 VDI 4100 | 12 dB(A) 10 dB(A) | Minimum requirement 30 dB(A) Increased requirement 25 dB(A) | Minimum requirement SSt I ≤ 30 dB(A) Increased requirement SSt III ≤ 22 dB(A) – ≤ 24 dB(A) |
| Ultraflat 54 DN 50 + slotted cover with installation aid + sound and settlement absorber | DIN 4109 VDI 4100 | 18 dB(A) 14 dB(A) | ||
| Ultraflat 79 DN 50 + slotted cover with installation aid + sound and settlement absorber | DIN 4109 VDI 4101 | 15 dB(A) 11 dB(A) | ||
| Practicus vertical DN 100 + Variofix Test report: P-BA 237/2013 | DIN 4109 VDI 4102 | 18 dB(A) 15 dB(A) | ||
| Ecoguss vertical DN 100 + Linearis Comfort upper section Test report: P-BA 238/2013 | DIN 4109 VDI 4103 | 23 dB(A) 20 dB(A) | ||
| Ecoguss vertical DN 100 + Comfort upper section + Fire-Kit + Quick Fit Test report: P-BA 239/2013 | DIN 4109 VDI 4104 | 16 dB(A) 14 dB(A) | ||
| Linearis Comfort shower channel 850 mm Test report: P-BA 240/2013 | DIN 4109 VDI 4105 | 17 dB(A) 13 dB(A) | ||
| Linearis Compact shower channel 750 mm Test report: P-BA 241/2013 | DIN 4109 VDI 4106 | 14 dB(A) 10 dB(A) | ||
| Scaca wall drain Test report: P-BA 242/2013 | DIN 4109 VDI 4107 | 17 dB(A) 14 dB(A) | ||
| Infinity 60 + sound and settlement absorber Test report: P-BA 24232/2021 | DIN 4109 VDI 4108 | 17 dB(A) 14 dB(A) | ||
| Infinity 90 + sound and settlement absorber Test report: P-BA 24/2021 | DIN 4109 VDI 4109 | 15 dB(A) 12 dB(A) |
An important detail: the sound and settlement absorber
It looks like a standard wall plug, but does much more: KESSEL’s flexible sound and settlement absorber acts as a sound decoupler between the drain body and the concrete floor. This enables it to achieve excellent sound insulation performance, far exceeding the requirements of VDI and DIN 4100. Sound insulation often has to be purchased separately, but with the Linearis Infinity shower channel, it is included as part of the scope of delivery. With the Ultraflat bathroom drain, it is part of the installation kit.
