Insulating contact sound from a drum kit, caused in particular by the pedal of the bass drum, requires a 'floating' floor, also called a drum floor or floating platform. In order to make a floating platform, you need a vibration-insulating foam material that both provides sufficient strength and stability to sit on and insulates as much vibration as possible.
There are different ways and products to create a floating drum floor, on this page we describe the easiest way. A customer of ours was kind enough to send pictures and a review of our solution:
I'm a tambour and I use an electronic drum kit, so in my case rehearsing is essential. But I live in an apartment on the third floor. Of course that causes some inconvenience. That's why I went to the Acoustics Shop in the Netherlands to explain my problem. An employee excellently informed me about what you can do in such situations. So, I bought a floor plate to counter the vibration and insulating walls to atenuate the rest of the noise. On top of the floor plate I placed a very sturdy MDF board of 22 mm. The vibration and other sounds have been greatly reduced, I am very satisfied and I can now rehearse with peace of mind.
What you see on the photo
On the photo you can see the setup of our customer. The solution is actually very simple. Around the drum set our customer has placed transparent panels from Clearsonic (we do not sell these). Against these panels the customer has placed white Akotherm GG absorption plates, which absorb the sound of the tapping on the drum pads. On the floor lies the turquoise coloured Agglomer D80 with a thickness of 50 mm. A thick sheet of MDF has been placed on top of it finished with red carpet tiles.
On the Polypress pageyou will find two D80 variants, 20 and 50 mm thick. Note: the thicker the Agglomer, the better the decoupling effect, but the more unstable the plateau! We recommend a thickness of at least 40 mm.
In order to create a floating platform, use a sheet material that hardly bends when weight is applied. The thicker and heavier the plate, the more stable the plateau becomes. In this example an MDF plate is used, similar works as well (we do not sell sheet material). Obviously, your floating plateau should not touch the walls anywhere. To make this is the case, you can equip your platform all around with self-adhesive Agglomer Strips.
Acoustic drum sets can be isolated in the same way, but in order to insulate airborne sound, the sound of the instrument itself, more is needed. In addition to a floating floor, you will also need to invest in floating walls and a floating ceiling. Or, for optimal results, you will need a complete sound studio.