In our conversations with our clients, designing their dungeon or playrooms often come up. One aspect they are interested in is soundproofing the room. 

We want privacy,peace, and quiet during our playtime, don’t we? There are a lot of noises coming from outside such as traffic, sirens, airplanes, honking horns that could distract us from our play. Furthermore, we also would like to keep the sound of our BDSM play to ourselves as well. There is no need for anyone other than people inside the dungeon or playroom to hear what is going on. 

So here are pointers for soundproofing your playroom: 

Doors

The heavier and thicker the door, the better for soundproofing. Adding padding to the inside of the door will help absorb sound coming from inside. Interior doors don’t typically have weather stripping, but adding some around the perimeter of the doorway can help muffle sound. Peel-and-stick foam rubber weather stripping forms a very tight seal and is affordable and easy to install. 

Walls

Hard surfaces, including drywall, plaster, and tiles, reflect and amplify sounds. So, it only makes sense that soft surfaces absorb sounds, making rooms much quieter. Cover walls with thick blankets, moving pads, tapestries, or quilts. Virtually any soft material will work, though thicker ones absorb more sound than thinner materials.

If you don’t mind adding an industrial look to the room, fasten sound-absorbing panels to the walls and, if necessary, the ceiling. The panels are made from superior noise-dampening materials, such as soft foam rubber, dense polyester fiber, and cork.

Floor 

Sound doesn’t only bounce off walls it can be reflected by hard floors as well. If your room has a hard-surface floor—wood, tile, or laminate—the simplest solution is to lay down an area rug to help absorb noise. And, again, thick rugs are better than thin ones. Also, buy an extra-thick pad under the rug for additional sound protection.

Windows

Even high-end windows aren’t very effective at blocking out noise. And the older the window, the worse it is at keeping rooms quiet. The easiest way to dampen window noise is to simply cover windows with thick blankets or quilted moving pads. Not the most attractive option, I admit, but it does work.

For a better, more attractive solution, consider installing noise-reducing curtains. These thick, heavy drapes are specially designed to stop noise and also double as blackout curtains to keep out sunlight.

When all else fails—and if your budget permits—you can significantly reduce window noise by upgrading to window inserts. These custom-made, clear-glass panels mount to the inside of existing windows and do an excellent job of blocking out noise.

Drywall 

Cover the existing walls and ceiling with an extra layer of ½-inch-thick drywall. And as extra protection against noise transmission, secure the new drywall with special sound-deadening caulk called, dampening compound.

While you can certainly cover the existing walls and ceiling with standard drywall, consider installing special sound-deadening drywall instead. It has a plastic polymer layer adhered to the back surface, which dramatically cuts noise. And at just 5/16 in. thick, the sheets are easy to install.

Reference: 

How to Soundproof a Room from Popular Mechanics