EWES Sound Fastener is a sound-reducing wood screw used in 12.5 mm plasterboard and wooden studs. The screw consists of double skulls joined by a unique spring. You don't need any extra material or new equipment to install the Sound Fastener screw
Does Sound Fastener really work?
The short answer is “YES”.
Sound Fastener has been tested by RISE (Research Institutes of Sweden), with a measured effect of 9 dB. So the screw reduces the perceived noise level by almost half.
Does it work well?
When normal plasterboard screws are replaced with EWES Sound Fastener, the results from independent test centres show an improvement of 7-8 dB (decibel) for a ceiling, and up to 9 dB for a wall. The human ear perceives this as almost a halving of the perceived noise level.
How does it work?
EWES Sound Fastener acts like a normal screw when it is fastened, but provides a spring connection between the plasterboard and wooden joist at the same time. This creates efficient noise reduction.
What is it that actually reduces disturbing noise?
There are three aspects to Sound Fastener’s design that prevent sound propagation.
A normal screw acts like a sound bridge for noise, propagating it from one side of the wall through the joists to the other side. This is more or less impossible with Sound Fastener, as it’s divided into two parts with a gap between the sections.
Sound Fastener creates a gap between the joist and plasterboard, which also makes it very difficult for noise to propagate to the other side of the wall.
Sound Fastener screws adjacent to the joisting create a protective shield – as the hundreds of small noise reduction screws in the board work together to absorb the unwelcome noise.
Can I use EWES Sound Fastener anywhere in a building?
If the basic construction of the building consists of wooden joists, then Sound Fastener works in walls, floors and ceilings.
How do I install EWES Sound Fastener?
When you use normal plasterboard screws, you compress the board against the joists. You stop screwing when the screw head starts to penetrate the surface of the plasterboard. You proceed in exactly the same way with Sound Fastener screws. This means that the spring is compressed during installation. When you release the pressure on the board, all of the springs together create a small 1-2 mm flexing gap.
Installation video for Sound Fastener and single plasterboard
Installation instructions for Sound Fastener and double plasterboard
Does the wall become unstable if it flexes?
The wall doesn’t become unstable. It behaves just like any other wall. It can easily be plastered, wallpapered or tiled, without affecting Sound Fastener’s noise reduction characteristics.
If I mount a TV on the wall, is the noise reduction compromised as a result?
Imagine a 120 square meter wall. Behind the plasterboards (and if appropriate the fibreboards), you’ll have around 130-140 Sound Fastener screws working together 24/7. They don’t just take care of sound waves, but also work together to deal with impacts. Even if some of them end up compressed, the others continue to work.
Is Sound Fastener eco-friendly?
EWES Sound Fastener is well suited to timber construction techniques, and suitable for eco-friendly construction.
Is EWES Sound Fastener expensive?
Compared to other well-known noise reduction solutions, EWES Sound Fastener offers several clear benefits: lower material needs, thinner wall and floor constructions, faster, simpler and more ergonomic installation, lower costs and better soundproofing. One major benefit - perhaps the most significant - is its ability to free up valuable living space.
