How much sound does a skylight reduce? Comparison of 3-wall, 5-wall and iWindow2 domes
When choosing a skylight, you will probably first think of daylight and insulation value, but sound insulation also plays an important role. Especially if you want peace and quiet at home or live close to a busy area.
In this blog, we explain in a simple way the difference between a skylight with an Rw value of 22 dB, 24 dB and 39 dB and how much sound they actually block.
What does Rw or dB mean for a skylight?
The Rw value in decibels (dB) indicates how much sound a product reduces. The higher this value, the better the sound insulation. Every extra 3 dB means approximately a halving of the sound power.
Comparison of the sound insulation
| Skylight type | Rw value | Sound reduction compared to 3-wall |
|---|---|---|
| 3-wall dome | 22 dB | Baseline |
| 5-wall dome | 24 dB | ± 25% more reduction |
| iWindow2 flat roof window | 39 dB | ± 95% more reduction |
When should you choose extra sound insulation?
- Living on a busy road or near an airport
- Creating a quiet bedroom or children's room
- Working from home in peace
- Residents sensitive to noise (babies, pets, etc.)
In these situations, the iWindow2 with 39 dB is the best choice. You will experience significantly less ambient noise thanks to the exceptional acoustic performance of this flat glass flat roof window.
Silence and light: a new standard
The iWindow2 combines high-quality acoustic insulation with a modern and sleek look. Not only is disturbing noise greatly reduced, but you also enjoy a clear view of the sky – without the visual interruption of a dome shape.
Conclusion
Although a 5-wall dome already performs better than the standard 3-wall version, for maximum acoustic comfort you should choose the iWindow2 with 39 dB. It reduces sound by up to 95% more and creates a quieter, more comfortable indoor climate.
Do you need advice on the right skylight or flat roof window for your home? Feel free to contact us – we will be happy to help you!
