How To Soundproof French Doors?

Soundproofing your French doors will help keep the noise in and prevent people from hearing what’s happening inside your house.

It can also help with privacy when you’re entertaining guests in the backyard.

However, unlike normal doors, soundproofing interior French doors can be quite complicated. Here are some simple steps that will teach you how to soundproof French doors.

Are French Doors Quiet?

French doors typically consist of three individual panes: one fixed center panel and two large operable side panels that open up into each other.

These types of units can be solid core with deadbolts for locking or they can feature glass/vinyl inserts as “picture windows.”

Because of their design, French doors provide superior sound insulation (about 60 dB(A)) but let in more heat and cold than other units.

Can You Soundproof a Room with French Doors?

Yes, it is possible to quiet down the noise transfer between two units by simply adding some type of secondary interior barrier which can be easily implemented on your own within just a few hours without any special carpentry skills or tools.

Soundproofing a room with French doors is not only possible, but an effective way to reduce the amount of noise that comes in and out of your room.

Soundproof French Doors Interior: Soundproofing Double Doors

Even when closed, the sound of slamming doors can be heard in every room.

There are many ways to soundproof French doors, but they all start with stopping noise at your door jambs.

The energy that is transferred through the door jamb is what makes the door slam shut and sending vibrations throughout your house.

If you’re trying to block outside noise from entering your home, there’s a simple solution below that will not only stop the sound at its tracks but also look great aesthetically.

1. Green Glue Noiseproofing Compound and A Door Jamb Kit

Green Glue Noiseproofing Compound is an adhesive that works by creating a damping effect due to its viscosity, creating added mass between joists, which stops sound dead in its path.

Now that you know exactly what Green Glue does let’s get on with how it can help make you a little more peace and quiet in your own home.

This can reduce noise by as much as 50%.

What You’ll Need:

Start out by removing the old weather stripping from the bottom of your French doors or bi-fold closet doors. Remove the old calking from both sides of your door jambs and clean out any debris.

Cut a line of Green Glue Compound and apply to the perimeter of the inside face of your door jamb, then place back into position.

You want to place all four brackets before you start applying compound because it is important that they sit flush along the direction in which they were placed.

Use a knife or putty knife to smooth out any air bubbles and allow for proper drying time.

If desired, seal all seams with acoustical caulk.

Affix weatherstripping over top of the adhesive and replace door stop molding. Now you’re done. See, wasn’t that easy?

2. Install Door Sweep

Install a door sweep on the bottom of your French doors.

This is one of the simplest yet highly effective soundproofing techniques that can be used to reduce noise coming through an exterior door.

A door sweep makes use of a strip of rubber or metal that attaches to your door’s threshold.

It works by creating a tight seal between the floor and the bottom part of your exterior door, preventing sound seeping under it and entering the home.

It also helps prevent bugs, insects, dirt, and other pollutants from getting in as well.

One of my most recommended door products for this purpose is the Holikme Twin Door Draft.

It’s available in a variety of colors allowing you to choose one that complements the interior décor of your home.

3. Hang Soundproof Curtains

Soundproofing curtains are designed to absorb noise.

Unlike ordinary curtains, they are made of thick materials that help absorb noise, preventing it from leaking to the other side of the door.

Just remember, when buying soundproofing curtains for your French doors, pick one that extends to the floor to help block noise from any gaps that the weatherstrip did not seal.

  • One of my most recommended soundproof curtains is the NICETOWN thermal curtains. They are available in different sizes and colors, allowing you to choose the size that fits your French door and the colors that match your home’s aesthetic. You will need curtain rods and curtain holdbacks to ensure that they fit perfectly onto your French doorway.
  • Another great option would be the AcoustiTrac Soundproofing Drape sold by Residential Acoustics. Unlike most soundproofing curtains, the AcoustiTrac Drape is designed to block noise from coming in and out of a space instead of just reducing echo.

4. Hang Soundproofing Blankets

Unlike soundproofing curtains, soundproofing blankets don’t contribute to the aesthetic of your home.

Honestly, they look pathetic when you hang them on your doors.

However, if noise is a must-stop for you and you have these moving blankets at your disposal, I highly recommend you use them as a temporary solution.

  • My most recommended soundproofing blanket, in this case, is US Cargo Control Large Sound Blanket. It measures 96 inches long and 80 inches wide. It only absorbs sound and is not for sound blocking and comes with grommets for easy hanging. Not only is it ideal for soundproofing French doors, but also great for use in recording studios.

5. Change the French Door Glass

You can replace the existing glass on the French doorway with noise-reducing glass.

Soundproof glass, also known as soundproof glass, sound-resistant glass, anti-noise glass, and sound insulation glass, is a type of laminated safety glass that has been designed to insulate against noise.

Here’s how noise-reducing glass is better than regular glass. In that case, we shall use a Sound Transmission Class (STC) rating- which is a measure of noise reduction measured in decibels.

It’s important to note that decibels are on a logarithmic scale, meaning that increasing STC by 3 translates to cutting down noise by half.

  • Single 1/8 thick glass STC rating= 27
  • Laminated ¼” glass STC rating = 33

6. Lubricate the Door Hinges

Lubricating noisy door hinges with graphite or WD-40 reduces noise by up to 90%.

Alternatively, you can lubricate hinges with a small amount of petroleum jelly is an excellent way to quiet a door that squeaks loudly when you open or close it. You should lubricate the hinge once every few months.

One of my most recommended products, in this case, would be 3M Silicone Lubricant. It’s a high-quality silicone that eliminates both metallic and rubber squeaks. It doesn’t contain any petroleum oils that would otherwise stain your clothes during the application process.

Final thoughts on Soundproofing Double Doors

Soundproofing French doors is a complex task and yet one that you can easily achieve on your own.

Above are some of my recommended methods that I would advise you to consider to help prevent noise from leaking in and out of a space through the double door.

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