When we’re talking about recording studio door construction techniques we’re really taking about barrier technology. We want to keep the sounds made in the room, inside the room. We want to keep the sounds that are made by sources outside the room, outside where they belong. We don’t want them in the room. Stay out!
So how do we do that?
We construct a barrier between the source and the receiver. OK so we want to build a wall. The door is the wall but the door is a wall that moves, has openings, etc. You have to remember in barrier technology that the weakest link in the wall defines the total performance of the wall. So if you have a poured concrete wall and a little piece of aluminum for a door… well you see the problem?
You have all this density and then they have this opening for a door, that is let’s say, thirty by seven? So you have a twenty-two or twenty-three square feet opening in this big concrete wall. The whole concrete walls effectiveness is reduced seventy percent. See? That’s why barrier technology is so critical.
So then the opening, the door, has to have similar barrier technology qualities and performance. So we have multiple layers and sealing requirement so that it seals. You can’t have an eighth inch, a sixteenth inch hole, it all has to seal.
Air Test With High Pressure
Then you air test it with high pressure air to make sure there’s no leaks. You can do it with compressed air in a can. That’s how we do it. So you have to have sealed it. Then you walk a distance and then you have another door that’s a little bit different and that’s called a sound block. That’s a space between two barriers.
So what have you created? You’ve created an air space between two barriers. So now you have three barriers. Air is a barrier to certain frequencies. Door, door, air. So, that’s the best way to do doors.
This video I made on barrier technology is definitely worth your time if you’re interested in recording studio door construction.
What about a single door in the wall?
Just doing a door into a wall can be done and I’ve saved it for last because it’s the hardest and you’ve got to get your walls right first.
The wall has the most surface area so you need to focus all your energy on the wall. And a two by four frame wall… don’t ever build one! Barely, a two by six, but a two by eight that’s a great start. Because just using common construction methods and two by eight, that seven and eight inch depth you can get a lot of performance for just a little bit more material costs.
Remember your weights. Because all this material adds weight so make sure your structure can support it. But send any of that stuff to me, and I don’t know it off the top of my head through experience, then I’ll have the answers for you quickly. Call me on 520–392–9486 and I’ll be happy to help.
If you want to learn more about this subject please sign up for our free room acoustic treatment videos and ebook which provide step by step instructions on all major room acoustic issues. Get instant access by signing up now.