Sound Insulation - Remodeling - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Remodeling


Thread Tools Display Modes
Old 05-18-2009, 05:19 PM   #1
Join Date: Apr 2009
Location: KS
Posts: 720
Rewards Points: 676

sound insulation

I am wanting to insulate the floor space between my main floor and basement for sound isolation.

It seems when I google this, I find 1/2" sheets of this or that. I'm not crazy about this for two reasons. 1st, I don't want to drop the ceiling another 1/2" or more and 2nd, the cost seems to get kind of high.

My main goal is just to cut the sound down. I am finishing the basement for a TV/game room and there are bedrooms and a kitchen above this area. I have 2 young girls and I don't want to wake them at night if I watch a movie and I don't want them to disturb the rest of the house if they are downstairs playing. I think you get the idea.

My initial plan was to just install 6" thick fiberglass batting to the floor joists and cover with sheetrock. The little bits I have done, does help, but someone mentioned this isn't a great sound proofing technique. What are some cost effective ideas?

Should I double up the batting in the joist bays, so that it is really dense?

I am having fur out the bottom of the joists with 2x4's to get around things like my a/c line, some plumbing, etc. What about installing some 1-1/2" rigid foam between the 2x4's. So basically, I'd have 6" thick batting in the joists, and rigid foam under.

Thanks for any ideas/suggestions....


Master Brian is offline   Reply With Quote
Old 05-19-2009, 06:30 AM   #2
Join Date: Dec 2008
Location: Wilmington, DE
Posts: 3,118
Rewards Points: 2,000

Basic insulation does not do a lot to block sound, although it does help some. Real sound insulation is expensive. Do a search for sound deadening and you will find a variety of ways to reduce sound travel, none are easy or inexpensive.


Just Bill is offline   Reply With Quote
Old 05-19-2009, 06:45 AM   #3
Long-Time DIYer
Mike Swearingen's Avatar
Join Date: Mar 2005
Location: On Albemarle Sound In Northeastern NC
Posts: 1,460
Rewards Points: 500

I understand that "mineral wool" is an excellent sound-deadener, as well as being fireproof. I have no idea what it costs, but it may be something that you can at least check out.
Good Luck!
Mike Swearingen is offline   Reply With Quote
Old 05-19-2009, 10:26 AM   #4
Join Date: Apr 2009
Location: KS
Posts: 720
Rewards Points: 676

Maybe I'll just have to live with the little bits of help, I gain from batting, which is fairly good. The mineral wool doesn't look to be inexpensive and this isn't that important to where I want to spend $$$ to get the sound down.

I do kind of wonder if blowing cellulose in would be any better. Cost wise, it probably wouldn't be much more than the batting, it would be a bit more work and mess. Hmmm....

The crappy part of this is that my in-laws had a business doing some of this stuff until just a few years ago. When they closed the doors, they probably threw out tons of stuff that would have worked.....
Master Brian is offline   Reply With Quote
Old 05-19-2009, 01:03 PM   #5
Registered User
Join Date: Mar 2009
Posts: 11,292
Rewards Points: 4,650

I vote for the mineral wool.,M1

Be safe, G
Gary in WA is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cape Cod Style House Attic/Crawl Space Insulation Help Danielg Insulation 24 05-21-2012 08:20 AM
How To Install Rigid Foam Insulation on Concrete earthad1 Building & Construction 9 10-26-2010 09:49 AM
sound insulation 7echo Building & Construction 4 09-24-2008 08:36 AM
Soundproof Windows BlueJello General DIY Discussions 3 11-30-2007 05:34 PM
What makes a quiet window? Badfish740 Building & Construction 8 09-30-2007 10:22 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1