Another Basement Insulation Question - Insulation - DIY Chatroom Home Improvement Forum


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

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

Reply
 
Thread Tools Display Modes
Old 01-30-2013, 01:50 PM   #1
Newbie
 
Join Date: Jan 2013
Posts: 3
Rewards Points: 10
Default

Another basement insulation question


I have the stud walls up with electric, plumbing etc...
Don't want to tear it down. Was about to put paper backed insulation in until I started reading here. What about 2" xps and using spray foam around the edges? I have been in the house 15 years and the walls and floors stay dry

Advertisement

tehans is offline   Reply With Quote
Old 01-30-2013, 01:56 PM   #2
Member
 
Trucon01's Avatar
 
Join Date: Jan 2012
Location: Northern Virginia
Posts: 655
Rewards Points: 500
Default

Another basement insulation question


You want to put 2" XPS between the studs or against the wall, behind the studs? If between the studs, you would be putting your plumbing on the cold side...

Also, add your location.

Advertisement

__________________
Basement Demo started Jan 2012: View my basement progression!!!

Bathroom demo started Feb 2013: View my bathroom progression!!!
Trucon01 is offline   Reply With Quote
Old 01-30-2013, 02:15 PM   #3
Newbie
 
Join Date: Jan 2013
Posts: 3
Rewards Points: 10
Default

Another basement insulation question


In between the studs against the block. I live in Columbus Ohio. Thanks for the reply
tehans is offline   Reply With Quote
Old 01-31-2013, 10:49 PM   #4
Registered User
 
Join Date: Mar 2009
Posts: 9,983
Rewards Points: 2,032
Default

Another basement insulation question


No, it wouldn't work well because the foamboard should air-seal (continuous) the concrete wall from moisture condensing there; http://www.buildingscience.com/docum...lation-systems

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 02-01-2013, 10:21 AM   #5
Home Performance
 
HomeSealed's Avatar
 
Join Date: Jan 2008
Location: Milwaukee,WI
Posts: 1,478
Rewards Points: 590
Default

Another basement insulation question


Gary is absolutely correct. My recommendation is to always complete your project using the best practices that we have available... It will be a major blow to have to move/redo your framing etc at this point, however it would be a far worse feeling in the pit of your stomach if you walk downstairs 5 yrs from now and see staining on the wall and carpet from moisture mold and mildew.
On the other side of the coin, these are best practices, but not fool-proof. Basements were not meant to be finished living space so there is always the possibility of problems, and the procedures that you use offer different degrees of mitigating the potential for those issues. Ultimately, you will need to decide how far you want to take that, but at minimum, you'll need to meet the standards of your local building code.
__________________
Replacement Windows, doors, siding, roofing, insulation, and certified energy consulting.
www.HomeSealed.com
HomeSealed is offline   Reply With Quote
The Following User Says Thank You to HomeSealed For This Useful Post:
Gary in WA (02-02-2013)
Old 02-02-2013, 11:19 PM   #6
Registered User
 
Join Date: Mar 2009
Posts: 9,983
Rewards Points: 2,032
Default

Another basement insulation question


For Ohio, you are under the 2009 IBC: http://www.reedconstructiondata.com/...ng-codes/ohio/

Which does not require a Class 1, 2 vapor barrier/retarder below grade: http://www.reedconstructiondata.com/...ng-codes/ohio/

I would not recommend it; http://www.buildingscience.com/docum...study-analysis

Many times, basements appear dry due to the air currents wicking away the moisture before it condenses on the wall, after you insulate/drywall, there will be different scientific conditions present...

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 02-06-2013, 04:14 PM   #7
Newbie
 
Join Date: Jan 2013
Posts: 3
Rewards Points: 10
Default

Another basement insulation question


I decided to do it right, pull the stud walls put 1" xps foam, stud walls back then unfaced fiberglass and I am very glad I did it.
tehans is offline   Reply With Quote
The Following User Says Thank You to tehans For This Useful Post:
HomeSealed (02-07-2013)
Old 02-06-2013, 11:37 PM   #8
Registered User
 
Join Date: Mar 2009
Posts: 9,983
Rewards Points: 2,032
Default

Another basement insulation question


All right! I think you will be much happier. Using Jan., Feb., Dec. low temps average your location, below grade to the "frost line" (3') and above grade; 1" f.b. will give a dew-point on the cavity side (of f.b.) at 27% RH, use 2" board = 37% RH, or just control the relative humidity down there when outside temps are at/below 21*F.
Reminders; sill-sealer under p.t. bottom plate, f.b. the rims w. canned foam, fire-stop frame wall top/every 10' horizontally, no gaps from fibrous insulation to f.b., and air-seal the drywall; http://www.buildingscience.com/docum...wall-approach/

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 02-07-2013, 07:04 AM   #9
Home Performance
 
HomeSealed's Avatar
 
Join Date: Jan 2008
Location: Milwaukee,WI
Posts: 1,478
Rewards Points: 590
Default

Another basement insulation question


Good choice

Advertisement

__________________
Replacement Windows, doors, siding, roofing, insulation, and certified energy consulting.
www.HomeSealed.com
HomeSealed is offline   Reply With Quote
Reply


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
Basement finishing Insulation question. mopar44o Building & Construction 12 01-04-2013 04:30 PM
Basement Wall Insulation Question doublejz Insulation 2 12-17-2012 01:38 AM
another basement insulation question, with a twist? Amateuralex Insulation 1 04-17-2012 04:11 PM
Basement Ext Wall - Will Rigid Insulation allow my wall to dry inward? COLORADOMTNMAN Insulation 10 01-15-2012 11:09 PM
basement with garage insulation question WS6transAm General DIY Discussions 7 01-21-2011 07:15 PM




Top of Page | View New Posts