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-   -   Need Help With Attenuating Sound Transmission Through A Door (https://www.avsforum.com/forum/19-dedicated-theater-design-construction/3147714-need-help-attenuating-sound-transmission-through-door.html)

David H. 05-22-2020 08:21 PM

Need Help With Attenuating Sound Transmission Through A Door
4 Attachment(s)
Hi all,

I'm looking for some gasketing and a door sweep to help attenuate sound transmission through a door. I'll attach some photos.

I read in a thread that Pemko S773 gasketing was suggested for the door frame: https://www.assaabloydooraccessories...asketing/s773/

I'm not sure yet what the best door sweep product to create a good seal, etc. would be, but I saw that some AVS Forum users have bought products from Trademark Soundproofing: https://www.tmsoundproofing.com and Trademark Hardware: https://www.tmhardware.com

It seems the Trademark Company has some good products, but I haven't seen any customer reviews here on what it's like to work with the company.

Any thoughts on getting buying advice and products from the Trademark Company?

Also, any advice in general for attenuating sound transmission through my door as much as possible, while also doing the project for a relatively low cost?


BIGmouthinDC 05-23-2020 05:55 AM

I've had good results with the Zero brand door seals and automatic bottoms. Soundproofingcompany.com is one source. For best results you will need to add a solid surface threshold for the best seal.

Blackdevil77 05-23-2020 07:36 AM


mhutchins 05-23-2020 10:09 AM

After you install your seals, check with a bright light for any air gaps. Many doors with high STC ratings rely on multiple sets of seals to accomplish the task. Also, don't forget to seal the hole for the door knob. This will likely require some creative customization on your part.


BIGmouthinDC 05-23-2020 10:30 AM

after you go through all the effort on perimeter seals you may discover that the door slab itself isn't up to the standard you require. Adding additional damped mass may be required to get you to your destination.

David H. 05-23-2020 08:53 PM

Thanks for the replies.

In addition to sound transmission through the door, another thing that happens is that when people on my floor don't make an effort to not slam their doors closed, it makes my door reverberate pretty loudly, and that can get really annoying, especially when I'm trying to sleep.

Any ideas on if the Pemko S773 gasketing, and a good door sweep and threshold, etc., will help prevent that issue as well?

I'm trying to move to the right space, so hopefully that will happen soon, but for now I talked to the building's management about doing something to help seal the door to deal with these issues.

I'll call the Trademark Company, and Soundproofing Company after Memorial Day.

If anybody has any other suggestions for good soundproofing companies, or any other advice, let me know, thanks.

BIGmouthinDC 05-24-2020 08:19 AM

I'm doubtful that perimeter seals are going to solve 100% of your problem. If I had to place a bet it would be 40-50%. They can stop a door from rattling against the door stops (neighbors slamming) but not from transmitting sound through the door itself.

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