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Author Topic: Making a custom door using green glue?  (Read 1532 times)


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Making a custom door using green glue?
« on: May 08, 2017, 08:03:12 AM »


Preamble: I recently moved into a home near a fairly busy road - not realizing how much the sound of traffic and car music would end up bothering me. I've decided to make a bad situation tolerable and soundproof a room in our workshop so that I have a place to escape to when I absolutely need quiet time to read or sleep. I intend to build a "room within an existing room" with green glue. I'm fairly handy and enjoy DIY projects.

It seems obvious to me that in a room-within-room construction, the doors and windows are the weak points for sound entry. My belief is that a solid door with dampening compound would be better than a solid door w/o dampening.

My questions concerning doors:
Would it make sense to build a door that is made up of, two sheets of 3/4" plywood with green glue in between? Or gypsum?
Or is 1/2" cement board (again w/ green glue) preferable?
If cement is preferable, I could cast two 3/4" thick sheets of cement (with fiberglass cloth scrim) and sandwich those together with green glue.

I can afford lead too, but I think a door lined with lead may be overkill for the project. Maybe I'm wrong and there's no such thing as overkill when it comes to soundproofing?

Are door penetrations for doorknobs of any concern for soundproofing effectiveness?

Interested in getting the forum's opinions, thanks.

Randy S

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Re: Making a custom door using green glue?
« Reply #1 on: May 08, 2017, 03:24:01 PM »

You are correct, there is no such thing as overkill in soundproofing but there is a diminishing point of return.

As for the approach, if you are doing double wall construction then you should be doing double door and double window systems to make these weak spots equal to the wall value.
Normally I would do 2/ 2" solid oak doors (8lbs sqft) with adjustable ball catches when I do not want door knobs penetrating the door.

Green glue is a great product for the double drywall sandwich, but if you do double doors I do not feel you would need it in the build.

Now if you are going to stick with single door entry then I would actually go with the lead approach in order to get the weight up...not only the weight but lead is a top performing product for soundproofing.

Feel free to contact me direct.

Best Regards,

Randy S.
Randy Sieg

Super Soundproofing Co
Ph. 760-752-3030


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Re: Making a custom door using green glue?
« Reply #2 on: May 08, 2017, 04:46:17 PM »

Randy: Yes, I intend to use double door and double window systems. I like the ball catch/detent idea to avoid penetrations for door handles. I will aim for two massive doors. Thanks for your reply.