Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-02-2009, 11:29 PM   #1
Newbie
 
Join Date: Feb 2009
Posts: 1
Rewards Points: 10
Default

rigid foam insulation in walls


Hi
I know that rigid foam is not designed for use in walls between wood studs (and it is more expensive) but my friend that is helping me hates working with the fiberglass bat insulation and prefers the sheets of foam. Is there anything wrong with using it for this purpose?

gossamer is offline   Reply With Quote
Old 02-03-2009, 12:46 AM   #2
Newbie
 
Join Date: Dec 2008
Posts: 6
Rewards Points: 10
Default

rigid foam insulation in walls


Welcome not any help but someone will be along Good luck


Last edited by tybeeanna; 02-03-2009 at 12:51 AM.
tybeeanna is offline   Reply With Quote
Old 02-03-2009, 01:13 AM   #3
Member
 
Tom Struble's Avatar
 
Join Date: Dec 2008
Location: west milford n.j.
Posts: 2,785
Rewards Points: 2,000
Default

rigid foam insulation in walls


just seems so far out of the ordinary .do you mean keep cutting pcs until you fill the stud bays?probably be way more expensive than fiberglass.you should stick with more conventional ways to do this instead of experimenting good luck
Tom Struble is offline   Reply With Quote
Old 02-03-2009, 06:25 AM   #4
Member
 
Join Date: Dec 2008
Location: South Western Ontario
Posts: 955
Rewards Points: 500
Default

rigid foam insulation in walls


See if your friend would consider working with Roxul. Less itchy, easy to cut, similar insulating properties to fibreglass.
On a side note, friends are friends but stubborn friends are not always the best help on a job...Do the job the way it should be done with or without the friend. Maybe you could have the friend help seal things after you stuff the insulation yourself.
Chemist1961 is offline   Reply With Quote
Old 02-03-2009, 07:25 AM   #5
Member
 
Join Date: Jan 2009
Posts: 489
Rewards Points: 250
Default

rigid foam insulation in walls


The reason people don't do this is because the framing is usually never perfect and it would be too easy to get air gaps. Try Johns Manville fiberglass insulation, it is a lot less itchy and has no formaldehyde. Most fiberglass insulations are not nearly as itchy as they were 10 years ago. There are also some insulations out there that are not fiberglass like denim.

Josh Jaros
jaros bros. is offline   Reply With Quote
Old 02-03-2009, 08:17 AM   #6
Member
 
Join Date: Dec 2008
Location: WV
Posts: 64
Rewards Points: 75
Default

rigid foam insulation in walls


Let's start with a sgt schultz confession, "I know nothing". Maybe some of the pros can answer this one. One thought that came to mind was are there any affects from layering these boards due to moisture? The thickest I saw was two inches wide, so I am assuming you would double up. Are these treated as faced insulation?
oscarMadison is offline   Reply With Quote
Old 02-03-2009, 09:12 AM   #7
Member
 
Tom Struble's Avatar
 
Join Date: Dec 2008
Location: west milford n.j.
Posts: 2,785
Rewards Points: 2,000
Default

rigid foam insulation in walls


you could probably special order almost any thickness but it is a very expensive and hard to detail way to do it.
Tom Struble is offline   Reply With Quote
Old 02-03-2009, 11:33 AM   #8
Member
 
Join Date: Jan 2009
Location: WV
Posts: 2,975
Rewards Points: 2,130
Default

rigid foam insulation in walls


Have you considered spray foam insulation? Even as DIY it's more expensive than fiberglass but probably still cheaper and much more effective than rigid.
md2lgyk is online now   Reply With Quote
Old 02-03-2009, 12:16 PM   #9
Member
 
Join Date: Sep 2008
Location: Ontario, Canada
Posts: 109
Rewards Points: 75
Default

rigid foam insulation in walls


Wet or dry cellulose are options.
Reilley is offline   Reply With Quote
Old 02-03-2009, 02:43 PM   #10
Newbie
 
Join Date: Jan 2009
Posts: 26
Rewards Points: 25
Default

rigid foam insulation in walls


Quote:
Originally Posted by jaros bros. View Post
The reason people don't do this is because the framing is usually never perfect and it would be too easy to get air gaps.
These are easily sealed with spray foam.

I've seen it done in an old building that didn't have sheathing under the old clapboards. It was the best option. Spray foam would have stuck right to the clapboards and prevent circulation behind them. Fiberglass would have probably gotten soaked in a driving rain as would cellulose. So rigid foam was fit between the studs leaving an air space behind the clapboards but no air would get past it.

Yes, it was a special case and was much more expensive than conventional wall insulation.
scowl is offline   Reply With Quote
Old 02-03-2009, 02:49 PM   #11
Member
 
Tom Struble's Avatar
 
Join Date: Dec 2008
Location: west milford n.j.
Posts: 2,785
Rewards Points: 2,000
Default

rigid foam insulation in walls


learn something new everyday!
Tom Struble is offline   Reply With Quote
Old 02-03-2009, 09:48 PM   #12
Member
 
Join Date: Jul 2007
Posts: 398
Rewards Points: 256
Default

rigid foam insulation in walls


Quote:
Originally Posted by Chemist1961 View Post
See if your friend would consider working with Roxul. Less itchy, easy to cut, similar insulating properties to fibreglass.
I did my addition (@1000 sq ft) completely with Roxul - aside from a friend stopping by to help with vaulted ceiling, it was all me and I survived. Very nice to work with IMHO (compared to glass - but as another poster mentioned fiberglass might be better now than last time I tangled wth it. Big box stores having a hard time keeping Roxul in stock last fall - shelves full of other batts - seems to be getting a bit more popular maybe...?.

Just a DIY perspective, fwiw....
rtoni is offline   Reply With Quote
Old 02-03-2009, 10:26 PM   #13
Jer
Member
 
Join Date: Jan 2009
Location: Utah
Posts: 36
Rewards Points: 25
Default

rigid foam insulation in walls


In my old 1904 rambler I used rigid styro to insulate an interior wall as a temporary help until I could afford some extensive remodeling.
My case was different though, I ripped out the old wood paneling and cut 3/4 inch styro in between the existing 1X2 firring strips that were nailed to the un insulated concrete block wall. I then installed drywall.
I must admit it made a huge difference in climate control in that room.
The previous post that mentioned layering thin strips of styro being a possible condensation problem might be right.
I would really think about using the newer non fiberlass insulation batts, or maybe offer to take your buddy to a good ball game if he will help with the fiberglass stuff!
Good luck with your project

Jer is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Insulating Basement w/ Rigid Foam and Batt Reilley Building & Construction 4 08-03-2013 11:07 PM
Rigid foam sheathing on top of foam insulation? benjamincall HVAC 12 02-04-2009 01:41 AM
Using rigid foil faced foam insulation Ronnie1a Remodeling 1 01-22-2008 02:23 PM
Rigid foam as floor insulation rkhpapa Building & Construction 3 09-24-2006 07:06 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.