Search: Posts Made By: Ted White
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05-23-13, 04:51 AM
Replies: 7
Views: 1,293
Posted By Ted White

Foam may wind up conducting vibration. Foam is so...

Foam may wind up conducting vibration. Foam is so rarely used in sound isolated designs because of this.

#1 Have a look and see if the pipe is in tight contact with the framing That's a great...
05-22-13, 06:20 AM
Replies: 7
Views: 10,470
Posted By Ted White

From a practical perspective, I would use...

From a practical perspective, I would use fiberglass batts. If I had all the free insulation I could use, I'd use the cheapest fiberglass batts available.

STC doesn't measure low frequencies so...
05-08-13, 10:07 AM
Replies: 5
Views: 20,289
Posted By Ted White

#1- Foam is the worst thing you could put in your...

#1- Foam is the worst thing you could put in your ceiling or wall to help with sound transmission. Foam is very conductive. The best insulation is also the cheapest. Standard fiberglass batt. R19...
04-23-13, 08:17 AM
Replies: 20
Views: 14,114
Posted By Ted White

The claims are not backed by lab data for the...

The claims are not backed by lab data for the past 10 years. Also, the finished wall or ceiling needs to be heavy, which is why standard $8 a sheet 5/8" drywall is such a great deal.
04-19-13, 05:48 AM
Replies: 20
Views: 14,114
Posted By Ted White

I agree the 8X is marketing. The 8X has never...

I agree the 8X is marketing. The 8X has never even been substantiated even as a theory. It's quite factually incorrect. Compare the lab data and you'll see in the lower frequencies (bass) the 8X is...
04-18-13, 10:16 AM
Replies: 20
Views: 14,114
Posted By Ted White

To stop a sound wave you need mass. In general,...

To stop a sound wave you need mass. In general, if we had a contest, the guy who had the heaviest solution would likely win. There is no lightweight soundproofing. The Holmes video is a classic...
11-13-12, 09:59 AM
Replies: 18
Views: 40,037
Posted By Ted White

R19 is too thick for 2x4 walls. Stick with R13...

R19 is too thick for 2x4 walls. Stick with R13 for 2x4 walls, R19 for the deeper ceiling cavities.
08-31-12, 06:16 AM
Replies: 3
Views: 898
Posted By Ted White

I would imagine you want to keep looking at the...

I would imagine you want to keep looking at the exposed beams and 2x6 flooring above. All that lumber is so resonant... That's why it makes great guitars and violins.

If you're willing to keep...
08-24-12, 09:12 AM
Replies: 9
Views: 6,972
Posted By Ted White

Do all framing first, then the ceiling is...

Do all framing first, then the ceiling is treated. Generally you alternate drywall layers: Ceiling, then wall, ceiling, wall. That will sort of "weave" the wall / ceiling drywall intersection,...
08-24-12, 08:14 AM
Replies: 9
Views: 6,972
Posted By Ted White

Then you will have considerable footfall (impact)...

Then you will have considerable footfall (impact) noise, and so the system is oriented around stopping that noise.

You would be looking at something like this, ideally:
2847
08-24-12, 07:27 AM
Replies: 9
Views: 6,972
Posted By Ted White

Is there a hard floor above that you are looking...

Is there a hard floor above that you are looking to reduce? That's the big question, as that will define what you should do
08-24-12, 06:32 AM
Replies: 9
Views: 6,972
Posted By Ted White

What specific sound are you looking to stop? Are...

What specific sound are you looking to stop? Are you building a theater and want to contain the explosions, or are you building an office and don't want to hear footfall noise from the hardwood floor...
06-30-12, 05:52 AM
Replies: 18
Views: 40,037
Posted By Ted White

While that may make sense to you, it is decidedly...

While that may make sense to you, it is decidedly not so. Mass is the
#1 driver with respect to sound isolation. So leaving it out is a huge omission. Huge.

Egg cartons are a commonly...
06-29-12, 09:59 AM
Replies: 18
Views: 40,037
Posted By Ted White

Sure. When soundproofing, we have only 4 tools in...

Sure. When soundproofing, we have only 4 tools in the toolbox.

Decoupling
Absorption
Mass
Damping

That's it. That's all we have. So what role might soundboard play in our sound isolated...
06-29-12, 09:49 AM
Replies: 18
Views: 40,037
Posted By Ted White

Soundboard isn't appropriate.

Soundboard isn't appropriate.
06-29-12, 05:48 AM
Replies: 11
Views: 21,567
Posted By Ted White

Fortunately we have data available to us. ...

Fortunately we have data available to us.

Fiberglass insulation is the material of choice. It is urban legend that mineral wool is better than fiberglass for soundproofing. Look up the NRC study...
06-29-12, 05:31 AM
Replies: 18
Views: 40,037
Posted By Ted White

The OP was looking for a soundproofed ceiling....

The OP was looking for a soundproofed ceiling. That precludes a dropped ceiling. You need substantial drywall for the mass.
06-28-12, 08:38 AM
Replies: 18
Views: 40,037
Posted By Ted White

Standard fiberglass tests best. See IR 761 from...

Standard fiberglass tests best. See IR 761 from the NRC labs. Use the cheapest insulation you can, which is generally fiberglass. Donít compact it.

If you can get drywall and damping compound...
11-05-11, 11:20 AM
Replies: 9
Views: 1,730
Posted By Ted White

Treating the furnace side as marksr suggested...

Treating the furnace side as marksr suggested would be best. Keep the vibration from entering the original framing, where it can be conducted through the walls, ceiling, and floor.

Consider using...
04-06-11, 01:05 PM
Replies: 5
Views: 1,428
Posted By Ted White

Better and moe economical to use two layers of...

Better and moe economical to use two layers of standard 5/8" drywall with a field application of damping compound.
04-05-11, 07:04 AM
Replies: 5
Views: 1,428
Posted By Ted White

The fiberglass is a basic startig point. The foam...

The fiberglass is a basic startig point. The foam is not suggested, unfortunately. Great for thermal, poor for acoustics. Stick with the R13 fiberglass.

The door as described by Vic is right on...
11-24-10, 05:35 AM
Replies: 4
Views: 12,774
Posted By Ted White

More Articles: Soundproofing Articles |...

More Articles: Soundproofing Articles | Soundproofing Company (http://www.soundproofingcompany.com/library/articles/)
11-23-10, 11:38 AM
Replies: 4
Views: 12,774
Posted By Ted White

If you have access to the underside of the...

If you have access to the underside of the stairs, consider applying a damping compound and drywall to the underside of the treads and risers. This will quite effectively damp the vibrations. Use...
10-08-10, 06:22 AM
Replies: 7
Views: 1,777
Posted By Ted White

Yea, sorry to say it, but construction is the...

Yea, sorry to say it, but construction is the only real way to get a difference. You'll find silly things like "soundproof paint" but there's zero sound isolation associated with these silly products.
10-07-10, 08:45 AM
Replies: 3
Views: 1,316
Posted By Ted White

Absolutely agree. If there is casual noise such...

Absolutely agree. If there is casual noise such as TV, stereo, voices, the solution is much easier. If footfall noise is the issue with hard floors above, the solution is more involved. Fortunately...
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