Tips for Soundproofing Your Home Theater
Room Isolation vs Room Acoustics
Your first step is to recognize the difference between these two treatments. There are two primary objectives in treating a Home Theater for sound control. The first is to help hold your sound to within your room, protecting the rest of your home or unhappy neighbors, and the second is to improve the acoustic quality of your sound within the room. We address tips for both treatments here.
Room Isolation
Start by visiting the Walls, Ceiling and Floor sections of this website. These are linked at the left. Each of these treatments will teach you to deaden the bleed of noise through your common surfaces by introducing the "density + disconnection" formula's outlined at these links. Your goal is to impair your surface's ability to conduct vibration, which will impede structure borne vibrations, and then create a cavity within your new assembly that will allow the transmitting wave to collapse. The treatments outlined will show you how to perform these installations whether your surfaces are finished, exposed frame, or not yet built.
Walls
Any surface in your Home Theater that you leave untreated for sound bleed will become the path of least resistance to the trapped sound in your room. Do not be mislead into thinking that the exterior foundation walls of your basement home theater, for instance, can get by without a transmission loss treatment. While it's true you may not be concerned with noise bleeding out of the house through these exterior walls, remember that the walls themselves, once they collect the energy, will deliver structure borne vibrations straight up the side of your house, circumventing any ceiling or inner wall perimeter treatment. You should target all 4 surrounding walls in your Home Theater for transmission loss.
Also, before you hang your drywall, another tip is first wrap any exposed drain pipes or ductwork that might deliver noise into your Home Theater. NetLag is a sound barrier lagging material that you can tape or clamp around pipes or ductwork to jacket the noise and contain it.
Ceilings
If you have the option, we recommend a finished surface ceiling, not a drop grid tile system. Ceiling tiles are great for hiding exposed pipes, but do little to deaden the bleed of noise through the ceiling. You're better off applying the treatment outlined in our Ceiling section. Anchor dB-Bloc to your exposed joists, add a set of firring strips, RSIC Clips or Green Glue, and a new layer of drywall. Put track lighting in your ceiling, not light canisters if possible, to minimize cutouts that will bleed noise. If you do cut openings into your ceiling, anchor our Canopies into your joist cavities prior to hanging your drywall.
If you have a grid system in place, or intend to put one in, we recommend you double up on the hangers used to support the grid, and rest our Ceiling Caps atop your existing ceiling tiles. Our Caps are weighted, and designed to help deaden the bleed of noise up and out through the ceiling. A finished ceiling, however, would be your best bet for sound isolation.
One of the finishing touches to a great Home Theater can be adhering tiles direct to your finished ceiling to create a Home Theater effect. See below.
Floors
Yes, even if you're attempting to combat the bleed of noise up, you should still look down for your full Home Theater soundproofing treatment. As with the exterior walls to your home, if you leave a concrete foundation exposed beneath a simple carpet pad and carpet, the energy will convert structurally and begin to spread to the walls and up throughout your home. Your best bet would be to lay FloorFighter down under your carpet, or beneath a substrate installed to receive a marble, tile, laminate or hardwood flooring surface. FloorFighter is available in a 3 mm thickness, and will serve to decouple your subwoofer and base tone vibrations from reaching the foundation and spreading.
Interior Room Acoustics
Once you've properly insulated your surrounding six surfaces in your Home Theater, your final step is to control the sound reflections within your room to help ensure you gain maximum sound quality with your sound system. To do this, your goal is to control your sound reflections, minimizing their interference with new sound signals that might otherwise distort or blur your acoustics. By capturing sound wave reflections, you clean out the background noise in the room to deliver more favorable original sound quality. There are a variety of products showcased in our Product Guide that can be wall or ceiling mounted in your Home Theater setting, including the products linked from our Home Theater Home Page.
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