18 votes

How do I soundproof the gap under an interior door over a hardwood floor?

If you really want to go for it, make sure you have a solid core door and install an automatic drop down door seal. An example (no endorsement — I’d try to find something from Pemco): https://www....
Aloysius Defenestrate's user avatar
13 votes

What's the shear strength of a 5.0 x 50mm wood screw?

SPAX, on their web site, provides plenty of engineering information about their fasteners. It's not clear which exact product you are using but the "5.0 x 50mm" appears to be closest to ...
jwh20's user avatar
  • 23.3k
13 votes

How do I soundproof the gap under an interior door over a hardwood floor?

There is another type of draft stopper. It is essentially two pieces of foam tube aka pipe insulation. They are sewn into a cloth sleeve. It slides under the door. One piece of foam on either side of ...
mikes's user avatar
  • 11.3k
12 votes

What does "24 on center" mean

"On-Center" is a term to indicate measuring from the center of one to the center of the next. This has the advantage of not getting into the detail of the actual width of the material being used. If ...
DaveM's user avatar
  • 2,715
12 votes

How to mute water drops on a glass canopy?

Invite building management over next time it rains. Demonstrate the annoying noise and mention that, should there ever be an icicle form off that pipe in the winter, it could break loose and ...
FreeMan's user avatar
  • 47.3k
10 votes

Is there a way I can make an interior door a better sound insulator?

The answer suggesting using a spray foam to fill the cavities in a hollow core door is totally wrong. Hollow core doors have a "honeycomb" card board baffle inside designed to keep the door faces from ...
W Wray's user avatar
  • 101
8 votes
Accepted

Is 3/4" OSB a better soundproofing material than 5/8" drywall?

3/4” OSB board is better than 5/8” gypsum board. Sound control is measured in STC ratings (sound transmission coefficient). Here’s a website that tests various materials: https://www....
Lee Sam's user avatar
  • 23.2k
8 votes
Accepted

What does "24 on center" mean

A common method for building walls is to use vertical studs (often the classic "2x4"s) to support the surfaces of the wall: (Source) The standard spacing for these studs is 16 inches "on center", ...
Daniel Griscom's user avatar
8 votes

Could hedges help in reducing noise?

A hedge can’t reliably decrease the sound pressure level by more than 2 dBA (i.e. barely perceptible), and most of the reduction is in the higher frequencies (i.e. tire noise but not engine noise). ...
Spencer Joplin's user avatar
8 votes

Ideas or options for a door in an open stairway

The problem with a door here is that it will feel weird and cramped to people coming down the stairs. So you need enough space on the flat-floor to stand and open the door. Right now it looks about ...
Criggie's user avatar
  • 10.6k
7 votes

How to mute water drops on a glass canopy?

A very low key solution would be to glue (or tie with a string if the setup is suitable) a sponge (the kind used for washing dishes) onto the aluminum pane on the spot where the drops hit. Such a ...
quarague's user avatar
  • 201
6 votes

What to use to lower the computer noise in a wooden cabinet?

If most of the noise is coming from the hard drives, rather than the fans, then you need to dampen the vibrations from transferring from the hard drive enclosure to the furniture. The vibrations ...
kponz's user avatar
  • 1,084
6 votes

Could hedges help in reducing noise?

Adding hedges will not do much to muffle the sound. You would need a totally dense hedge like you see in a garden maze which would be impractical. You would be better off upgrading your windows to ...
JACK's user avatar
  • 80.6k
6 votes

Ideas or options for a door in an open stairway

A few options come to mind: A common swinging door. Easy to frame there. A barn door, sliding right. Sliding left is probably prohibited and likely impractical because of the other door. A pocket ...
P2000's user avatar
  • 16k
6 votes

Reduce low-frequency noise from nearby rail yard during home renovation and wall (re)construction

After comments: You won't achieve this in a domestic build, unless you're starting from scratch. You need mass & air-gapping (de-coupling). When you're dealing with such low frequencies & ...
Tetsujin's user avatar
  • 11.5k
6 votes

Build a door frame

Not a huge amount I'm afraid. It will make some difference (the felt will particularly help), but there's no getting away from the fact that metal roofing sheets make an excellent drum. I would ...
Martin Bonner supports Monica's user avatar
5 votes

How do i stop office chair sound when leaning back?

I've used Lock Ease for this exact issue. Lock Ease is an amazing product. It's dry graphite, with an alcohol (I think) based carrier fluid packaged in an aerosol can. The carrier fluid help gets the ...
Tyson's user avatar
  • 4,230
5 votes

Is 3/4" OSB a better soundproofing material than 5/8" drywall?

For the best noise insulation, try layering materials with different acoustical properties. For example, you could sandwich some foam board between two layers of OSB. As the sound reaches each of ...
mrog's user avatar
  • 820
5 votes
Accepted

Can Rockwool Insulation be compressed or squished to fit through a 4'' hole and then rexpanded?

Yes, rockwool will expand after compression. I have often squeezed it into cavities through openings, and found it restores to the original size. Once pushed through it expands and you can reach in to ...
P2000's user avatar
  • 16k
5 votes

Concrete legs for sound-proofing bed

You are on the right track to decouple the bed from the floor in terms of low frequency vibrations, by combining weight with absorption. Heavy machines and sensitive audio turntables also use the ...
P2000's user avatar
  • 16k
5 votes

How do I soundproof the gap under an interior door over a hardwood floor?

Take off the door, and screw a strip of wood the same dimensions as the bottom of said door, so it just misses the floor at its smallest gap - maybe >1". Then, the remaining gap can have a ...
Tim's user avatar
  • 5,308
4 votes

Help soundproofing already built room

I've attempted to build a reasonably soundproof music room in my basement and can tell you it is a tall order. I built a room when finishing my basement using double drywall with Green Glue, a ...
Eric Mark's user avatar
4 votes
Accepted

Tips for building a soundproof room with ventilation

"Insulation" (in the ordinary construction sense) is essentially worthless for blocking sound. But if you need it for the conventional thermal reasons, then certainly go for it. When it comes down to ...
Richard Crowley's user avatar
4 votes
Accepted

Acoustic stud wall - over laminate flooring or not?

Laminate flooring should typically not be pinned by cabinetry, walls, etc. It needs to be able to move slightly. I would cut a channel for the new wall plate. Be aware that many such floors have ...
isherwood's user avatar
  • 138k
4 votes

What kind of professional to call for help with structure-borne noise issues from HVAC

As an engineer having dealt with window and wall mount A/C noise problems for over a half century, I can offer you the most likely cause of the noise transmission and the solution to solve the noise ...
Brent J. Driskill's user avatar
4 votes
Accepted

When hanging a double layer of drywall, do both layers need to be fully screwed to the resilient channel?

Yes, both sets of screws are required. Two layers of gypsum board is generally used for two hour fire wall protection. The protection (and rating) comes from the proper installation, including ...
Lee Sam's user avatar
  • 23.2k
4 votes
Accepted

Can we seal the bedroom door gap, or will it affect the central air conditioning airflow?

The gap at the door allows the heated air in because if the gap is sealed once the room Is pressurized No more air can get in so the room will not heat or cool if the airspace is blocked off.
Ed Beal's user avatar
  • 103k
4 votes

Loud brass valve - how to make it quieter?

A "globe valve" would be more suitable for the task. Both ball valves and gate valves are intended primarily for shutoff - either fully open, or fully closed. A likely noise source is ...
Ecnerwal's user avatar
  • 215k
4 votes

Could hedges help in reducing noise?

Not really. I live along a highway, and even a substantial row of mature trees and undergrowth doesn't do much. You need density and you need full obstruction. A hedge provides neither. Do like I do ...
isherwood's user avatar
  • 138k
4 votes
Accepted

Will expanding foam improve soundproofing around Interior Doors

I don't believe that'll help unless you have solid-core doors, door and threshold seals, and sound insulation in your walls already. Without those things the quantity of sound coming through your ...
isherwood's user avatar
  • 138k

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