How much acoustic material do you need? Here's how to calculate it

Calculating sound dampening isn't done with an exact formula, but with three questions: how large is the space, how many hard surfaces does it have, and how disruptive is the reverberation already? Based on this, you determine the size, the number of artworks, and the dampening level you need. Below, we'll go through this step-by-step so you can estimate what your space needs before you order.

Calculating sound dampening: where do you start?

Start where the reverberation is most noticeable, usually opposite a window, above a sofa, or in a room with a lot of concrete, glass, and tiles. One artwork in that spot often makes a noticeable difference, especially with light reverberation. The larger and more reverberant the space, the more square meters of material you need, distributed across a larger size, a higher dampening level, or multiple artworks together.

Which artwork size suits your space?

Our own sizes provide a good rule of thumb:

Square (60×60 cm) or M (60×80 cm). For a small space, a hallway, or a subtle accent.

L (40×120 cm) or XL (80×120 cm). For a larger wall, for example, above a sofa or a sideboard. Our rule of thumb: the artwork should be approximately two-thirds of the sofa's width.

XXL (120×180 cm). For large, reverberant spaces where you want maximum impact and maximum sound absorption.

Unsure about the size? First, mark the size on the wall with painter's tape to see how it looks.

What dampening level do you need?

In addition to the size, you also choose how much of the sound hitting the artwork is absorbed:

Essential, 60% dampening. Our standard version, sufficient for most spaces with light to moderate reverberation.

Extra, 80% dampening. For spaces with more reverberation or higher ceilings.

Ultimate, 100% dampening. Comparable to a fully open window in terms of sound transmission, meaning 0% reflection, for strongly reverberant spaces.

Visually, nothing changes about the artwork; only the frame depth increases (from 4.1 cm for Essential to 7.2 cm for Ultimate).

Is one artwork enough, or do you need more?

That depends on how large and open the space is. Client Denise Kortlever had a large, open-plan space: kitchen, dining area, and living area flowed into each other, with many hard surfaces. She first hung one artwork (Noah) in the kitchen, not even in the acoustically ideal spot. Her own reaction: "The difference is truly obvious! For the entire space, we still need a bit more m² of felt, but it's bizarre how much difference this one artwork already makes and how beautiful it looks."

That sums it up well: one artwork doesn't completely solve the problem in a large, open-plan space, but the effect is immediately noticeable. When calculating sound dampening for such a space, you're therefore thinking more in terms of artworks than a single fixed number. If you have a smaller, enclosed space, one artwork is often sufficient.

Step-by-step plan: how to calculate it yourself

1. Determine the busiest reverberation spot in your space, usually opposite a window or hard wall.
2. Choose a size based on the wall or sofa width there.
3. Choose Essential for light reverberation, Extra or Ultimate for a large or reverberant space.
4. If the space extends into another area (like Denise's), consider a second artwork in the next busiest spot.
5. If you're still unsure, use the selection guide or send us a photo of your space; we'll gladly assist without obligation.

Does no standard size fit your wall? Check out the possibilities for custom-made artworks. Curious about how a color and material feel before you order? Order a sample box; the amount will be refunded with your order. More accessible tips to get started? Read Improve acoustics: 7 tips to reduce reverb.

Frequently asked questions about calculating sound dampening

How many square meters of acoustic material do I need?
There is no fixed number per square meter of floor space. Start with one artwork in the busiest reverberation spot, and expand with a larger size, higher dampening level, or additional artwork if the space is large, open, or highly reverberant.

Is one artwork enough for a large space?
Often not completely, but the effect is immediately noticeable. In a large, open-plan space (such as an open kitchen that flows into a living area), a second artwork in the next busiest spot is often needed for the full effect.

Which dampening level should I choose?
Essential (60%) is sufficient for most spaces with light to moderate reverberation. Choose Extra (80%) or Ultimate (100%) for a large, high, or strongly reverberant space.

How do I know which size fits my wall?
Mark the size on the wall with painter's tape to get a visual impression. Above a sofa, the rule of thumb is approximately two-thirds of the sofa's width.