Ever walked by one of your doors and wondered why you could hear so much noise coming from the other side? We understand the frustration. We get calls and emails all the time about how to block sound through walls, ceilings, floors, and windows, but it’s pretty surprising how often doors tend to get overlooked.

That’s why we created this article – to open the door to a world of possibilities in managing sound leaks, starting with your doorways. Here’s everything you need to know about soundproofing a door.

Why You Should Soundproof Your Doors

Think about it this way – you can add all the layers of mass-loaded vinyl and gypsum to your wall that you want, but if your door has even a 1% gap opening when closed, its sound-blocking capability is significantly reduced. Yes, you read that right – just a 1% gap opening can reduce door soundproofing effectiveness by 50%.

Diagram of air flow and sound wave propagation through a small opening

Diagram of air flow and sound wave propagation through a small opening

That’s why it’s vital to consider soundproofing your doors. A soundproof door gives a room the right starting point to control the acoustics and create a high-quality sound environment.

How to Soundproof a Door

Now that you know why it’s essential to soundproof your doors, you might be wondering how to accomplish it. Luckily, there are several effective methods and products available here at Acoustical Solutions that can help you soundproof your doors.

1. Door Seal Kits

Acoustic Door Seal Kit - 485-3 (not to scale)

Acoustic Door Seal Kit – 485-3 (not to scale)

Door seal kits are one of the most effective tools for soundproofing a door. The door must be sealed on all four sides for maximum effectiveness, which is why kits typically include automatic door bottoms, door jambs, and a threshold to engage the door bottom. I highly recommend our PrivacyShield® Soundproofing Door Seal Kit (Complete Set) for standard-sized doors.

However, it’s worth noting that not all doors are ideal for sealing. For instance, pocket doors are notoriously difficult to seal effectively due to their design, which makes them a poor choice where sound transmission is a concern. Hollow-core doors aren’t as effective as blocking sound either. In fact, if you pair one of our door seal kits with a solid-core slab door the difference is really pronounced.

If you’re in doubt about what’s best for your door, feel free to reach out!

2. Automatic Door Bottoms

Automatic Door Bottom 367 Surface Mount Aluminum Finish- 29/32" deep x 1-29/32" high

Automatic Door Bottom 367 Surface Mount Aluminum Finish- 29/32″ deep x 1-29/32″ high

Unlike standard door sweeps you can buy from a building supply store, automatic door bottoms are a mechanically-activated solution. These types of devices utilize a concealed flat spring mechanism that, when the door is closed, lowers a neoprene seal insert against the floor or saddle. The result is a tightly sealed door whenever closed, to eliminate potential gaps or openings that could compromise soundproofing.

Automatic door bottoms come in various styles, including surface-mount, semi-mortised, and fully mortised. This variety lets you choose the design that best fits your specific needs and aesthetic preferences.

3. Door Jamb Seals

PrivacyShield Soundproofing Door Seal Kit

PrivacyShield® Soundproofing Door Seal Kit

PrivacyShield® Door Seal Kits (Top and Sides) are a fantastic solution for the sides and top of your door jamb. Our acoustical seals feature a unique compress-o-matic design, complete with a sound-absorbing neoprene rubber gasket that forms a tight seal when the door is closed.

These kits are available in versions that attach to existing door jambs or door frames, which makes it a versatile application to suit various door types and structures.

4. Door Astragals for Double Doors

Acoustic Double Door Astragal - Style 328 Aluminum

Acoustic Double Door Astragal – Style 328 Aluminum

Soundproofing double doors requires a slightly different approach. Our Acoustic Double Door Astragals are specially designed to seal off the air gaps that usually occur where double doors meet, to effectively prevent sound leaks and enhance the overall soundproofing.

5. Door Thresholds and Saddles

Acoustic Door Threshold

Acoustic Door Threshold

Acoustical door thresholds, also known as saddles, are designed with a neoprene bulb with a protruding rubber finger. This innovative design helps correct any misalignment in the door as it’s closed to further improve the soundproofing effectiveness.

When used with an automatic door bottom, the door has a solid surface to seal onto, which provides a superior seal. Depending on the specific flooring situation, a threshold might be critical to achieving optimal soundproofing results.

6. Cam Lift Door Hinges

Cam Lift Hinge

Cam Lift Hinge

Cam lift door hinges are another excellent solution for soundproofing your doors. Their lifting action enhances the sealing characteristics along the door perimeter by lifting and lowering the door with the swing. This action ensures a secure seal each time the door is closed, which makes these hinges an excellent addition to any soundproofing project.

7. Replacing Your Door

PrivacyShield® Soundproof Door

PrivacyShield® Soundproof Door

In some cases, the most effective way to soundproof your space may be to replace your existing door entirely. Consider opting for something like our PrivacyShield® Soundproof Door. It comes with everything you need to make your space as soundproof as possible.

Our PrivacyShield Soundproof Door is one of the most affordable options on the market, but the cost is still out of reach for many. If your budget doesn’t allow for the cost of soundproof door, you might also consider a two door system with an air gap, solid core doors, and door seal kits. I’ve used this on both home and professional studios with great success.

Overly Quick Ship Metal Acoustical Door

Overly Quick Ship Metal Acoustical Door

Additionally, we have a metal soundproof door, the Overly Metal Acoustical Door. We offer this as a quick ship option when looking for metal over wood, a great product that offers excellent soundproofing qualities!

Soundproof Your Doors Today with Acoustical Solutions

There’s no denying the impact that soundproofing a door can have on the comfort, privacy, and functionality of your space. By taking steps to address potential sound leaks in your doors, you can significantly improve your acoustic environment.

Don’t wait to experience the benefits of a soundproofed space. Contact us today to explore our wide range of products and start your journey towards a quieter, more peaceful environment!

To learn more about how Acoustical Solutions can solve your noise control problems, use our contact form, call one of our Acoustical Sales Consultants at (800) 782-5742, or visit us on the web at acousticalsolutions.com.