Let’s try to keep it quiet!

December 10, 2014

How to Soundproof a Floor

Filed under: Soundproofing Elements — Deborah Dera @ 7:31 am

noiseSoundproofing the floors in an older home is possible, but this type of project is actually much easier to do on a new construction home before it is completed. Adding soundproofing materials to a home that is in the process of being built is much easier than tearing up floors in an older home and starting over.

It is a challenge that is a bit unusual to soundproof a floor. The first thing that is required of most projects that are meant to block sound is to tackle the sounds that are traveling in the air through the ceiling. Next, you need to deal with a problem that is unique and specific to flooring: Impact noise. This is created by furniture moving around, footsteps, and other noise from objects hitting the floor. The reason this type of noise is unique is because it not only do impacts create noise, they also cause vibrations.

Floor and ceiling system solutions to noise is something we have worked diligently to create. Other systems that are currently on the market may be complex, but you will find that you can create a workable sound barrier in a short time period by following certain steps.

During construction of a new home, you will want to apply gasket tape to the exposed joists in the floor and ceiling. This gasket tape will aid in preventing future squeaks from developing. Squeaks can develop as joists that are located in the subfloors loosen and rub against each other when movement occurs. Even if the joists loosen up over time, the gasket tape will help prevent that squeaking from happening.

Next you will need to install your sub flooring material on top of the joists. After the sub flooring is in place, you will have to apply a layer of Green Glue on top of it. You will need to use two tubes of this glue for each and every 4×8 sheet of flooring that you have in place. After you’ve applied the Green Glue to the sub flooring, you will need to put down a layer of soundboard down. After that you will need a second layer of Green Glue, then another layer of sub flooring. Plywood is the most common material for this last layer.

If your budget is tight, you may be concerned about the extra work and expense of that last step. You can make your soundproofing project easier by getting rid of the first layer of Green Glue and the soundboard. Instead of this, you would just install one layer of Green Glue between your first and second layer of sub flooring to achieve an acceptable result.

Once you’ve finished this step, you will need to use acoustical calk to line the entire perimeter of the room. This will ensure that the soundproofing you’ve done is sealed properly. Next you will put your flooring in place over the sub floor. If you have chosen to use carpet, be sure to use a thick pad as it will add to the soundproofing.

If your new home is more than one level, your next step will be to soundproof the ceiling to keep it quiet on the floor above. Do your homework about soundproofing your ceiling before you tackle that project. Once you’ve soundproofed the ceilings and the floors, you will probably not have any sound issues with those rooms.

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