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Sound Proof Double Doors

Soundproof Double Doors and French Doors

Soundproof Double Doors and French Doors

Can your team barely concentrate in your meeting room over the noise of people chatting away on the other side of the double doors? French doors and double doors may be a bit more complex to soundproof than standard doors, but there are some basic strategies you can use to block the noise and reduce sound transfer into and out of the room.

 

Read on to learn some of our expert advice on soundproofing your double doors and our recommended materials to use.

Can your team barely concentrate in your meeting room over the noise of people chatting away on the other side of the double doors? French doors and double doors may be a bit more complex to soundproof than standard doors, but there are some basic strategies you can use to block the noise and reduce sound transfer into and out of the room.

Read on to learn some of our expert advice on soundproofing your double doors and our recommended materials to use.

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Popular Double Door Soundproofing Products


soundproof panels for party wall
Sound Lock™ Door Seal Kit
Sound Lock™ Soundproof Door
soundproof panels for party wall
Fantastic Frame™ Soundproof Window Inserts

Types of Sound Issues with a Double Doors

Sound can transmit through doors much easier than walls because a door is much less dense than a wall and there are large gaps around the perimeter (especially at the bottom). Double doors have even MORE gaps than a standard door, because there’s an opening at between the two doors - making them more likely to need soundproofing. Before we discuss some techniques for soundproofing your double doors, let’s go over the type of sound you are likely dealing with.

Airborne Noise

When it comes to soundproofing any type of door including double doors, airborne noise is the type of sound you are trying to block. As the name suggests, airborne noise is transferred through the air. In a residential setting, examples of airborne noise that could be heard through your double doors include loud music, kids playing in another room, or dogs barking. In a commercial setting, double doors may be used to separate noisy spaces such as a meeting room and the break room.

Impact Noise

Impact noise is not a concern for double doors or french doors. Impact noise is caused when an object hits a surface, causing the surface to move and vibrate. It is more common to soundproof for impact noise with floor/ceiling constructions, because impact noises enter the structure most commonly through the floor (ex: footsteps and operating machinery). Since impact noise isn’t going to be stopped by a door – these types of noises should be solved using other methods.

soundproof double doors

How to Soundproof Double Doors without Windows

Soundproofing windowless double doors is simple and is essentially the same process as with a standard door with a couple of key differences.

Here are the two main things to look out for when soundproofing a double door.

The Double Door is Dense Enough to Block Sound

Any barrier needs to be solid and dense to efficiently block airborne noise. That is why we always recommend purchasing solid core doors when installing double doors. Hollow core doors are not dense enough to block much sound. So no matter what you do to seal up the gaps around the door, there will surely still be a good amount of airborne noise transmitting through the door itself. For soundproofing, you need a solid core door.

The average solid core door will have an STC rating of 30-35, while a hollow core door will have an STC rating of 20-25. The 10 STC rating difference may not seem like much, but it will effectively cut the perceived sound in half!

There is an Airtight Seal Around The Perimeter of the Double Door

You will also want to make sure that the perimeter around the door is sealed to prevent any noise from slipping through the gaps between the door and the door jambs or the door jambs and the wall. We close these gaps with an adjustable door seal kit for the door itself, and acoustical sealant for any gaps between the jamb and the wall.

Sound Lock Door Seal Kit

Our Sound Lock Door Seal Kits are a great way to seal the perimeter of doors. The seal kit even includes a drop-down seal at the bottom of the door that becomes flush with the floor when closed. You can get up to 20 STC points of improvement to your double doors if you use this product. The Sound Lock Door Seal Kit should only be used on a solid core door to ensure maximum sound blocking ability.

Our door seal kits are designed for single doors or double doors. For double doors, reach out to one of our soundproofing experts at Second Skin, and we will provide you with a specific quote. Since double doors also need to be sealed where the two doors meet, we include an astragal seal that allows our door seal kit to also seal that middle gap.

Sound Lock Soundproof Door

Our Sound Lock Soundproof Door is a perfect all-in-one purchase that can be built as a double door as well. The Sound Lock Soundproof Door is a pre-hung and ready-to-install soundproof door that can be purchased and installed as a double door that has an incredible performance compared to standard solid core doors. The unit has an STC rating of up to 56 and can even be customized to come with windows, made using our Tru Acoustics Soundproof Windows, allowing the door to maintain top-end performance well even with a viewing window.

Feel free to reach out to one of our soundproofing experts for a double door quote on the Sound Lock Soundproof Door.

soundproof french doors

How to Soundproof French Doors with Windows

French doors are very similar to double doors but they have windows installed to allow natural light into the room. The glass in the french door adds another weak point, meaning you will have to increase the soundproofing of the window as well as the perimeter of the door. French doors have a much lower STC rating than a typical solid core door, but there are still a few ways to improve on them.

Fantastic Frame Soundproof Window Inserts

The Fantastic Frame Soundproof Window Insert is the best way to reduce airborne sound transmission through the window in your french doors. The window insert is installed using metal trim pieces that allow the insert to magnetically connect to the door and soundproof the door’s windows. This creates an airtight seal and can stop up to 80% of the noise from traveling through the windows in your french door. These are always a great option for soundproofing a window in your home, read our article on cost of soundproofing a window for more information on the different window soundproofing options and costs.

Door Seal Kit

Just as with standard double doors, a door seal kit is needed for sealing around the perimeter of french doors. Chances are your french doors will be exterior facing and sealed up with weather stripping. But if you are taking steps to soundproof interior french doors, it is imperative to seal around the perimeter or they will allow a lot of noise to pass through.

Soundproof Curtains

If you’ve searched around the internet, it sounds like soundproof curtains are a popular solution, but they are actually not very effective. Most products advertised as soundproof curtains are not STC rated and not dense enough to actually block sound. Aside from having minimal impact, adding a curtain to your french door sort of defeats the purpose of having a window there. For a material to be able to block sound, it needs to be very dense with an airtight seal. Most curtains are nowhere near dense enough to be considered soundproofing materials.

Soundproof Blankets

If you are dead set on a soundproof curtain, your best hope is a product like the Quiet Quilt Soundproof Blanket. This product would not be ideal for an interior door because it isn’t very aesthetically pleasing, but it can be used for exterior french doors. The Quiet Quilt Soundproof Blankets are STC rated (STC 32) and are dense enough to block sound.

Bottom Line on Soundproofing Double Doors

Whether in the office or at home, now you know how to properly soundproof your double doors, and you can finally block out the noise of your loud colleague or your roommate's horrible music preferences.

Contact the soundproofing experts at Second Skin Audio with any questions on your soundproofing project.

Have questions about your project?

Call us at 1.800.679.8511