Shed Insulation - Building & Construction - DIY Chatroom Home Improvement Forum


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

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

Reply
 
Thread Tools Display Modes
Old 06-17-2010, 11:54 PM   #1
Newbie
 
Join Date: Jun 2010
Posts: 3
Rewards Points: 10
Default

Shed Insulation


I just put wall heaters in my shed/workshop and now want to insulate it. Do I need to put a vapor barrier over the insulation? I live in WA state with winter temps below freezing. I am going to sheet the walls with MDS board.

Advertisement

cyrious is offline   Reply With Quote
Old 06-18-2010, 01:45 AM   #2
Member
 
Join Date: Dec 2008
Location: Fairbanks, AK
Posts: 1,847
Rewards Points: 1,000
Default

Shed Insulation


I believe you'd be best off w/ a moisture retarding system, as I don't think anywhere is Washington is zone 7 or 8, where real vapor barriers are encouraged. This can be accomplished w/ vapor retarding paint and a tight drywall system. The trend is to get away from real vapor barriers as much as possible. You absolutely should use AIR barriers in and out, but the vapor barrier inside will depend on your climate. I would consider some insulation other than fiberglass batts, too; rock wool, cellulose, or cotton. Keep researching and check w/ local city/county engineers. I am not an expert, but have read a LOT the last few years. One good place to read is greenbuildingadvisor.com; buildingscience.com (?) is another. And here, of course. GL. john

Advertisement

jklingel is offline   Reply With Quote
Old 06-19-2010, 01:16 PM   #3
Newbie
 
Join Date: Jun 2010
Posts: 3
Rewards Points: 10
Default

Shed Insulation


thanks, I'll give those website a look through.
cyrious is offline   Reply With Quote
Old 06-19-2010, 11:38 PM   #4
General Contractor
 
Join Date: Aug 2009
Location: Seattle, WA
Posts: 67
Rewards Points: 75
Default

Shed Insulation


Yes vapor barriers are used in Washington state, it's cold enough to where they are required. They go on the inside, you can use one of three methods; faced batts, plastic over studs, or PVA primer.
KennMacMoragh is offline   Reply With Quote
Old 06-20-2010, 05:44 PM   #5
Registered User
 
Join Date: Mar 2009
Posts: 9,993
Rewards Points: 2,052
Default

Shed Insulation


Depends on where you live in WA. http://www.buildingscience.com/docum...ecommendations
The unit of measurement typically used in characterizing the water vapor permeance of materials is the “perm.” Several classes of vapor retarders are further defined as follows [4]:
·Class I Vapor Retarder: 0.1 perm or less
·Class II Vapor Retarder: 1.0 perm or less and greater than 0.1 perm
·Class III Vapor Retarder: 10 perm or less and greater than 1.0 perm
·Test Procedure for vapor retarders: ASTM E-96 Test Method A (the desiccant method or dry cup method)
Finally, a vapor barrier is defined as:
  • Vapor Barrier: A Class I vapor retarder.
From: http://www.buildingscience.com/docum...gs?full_view=1

The asphalt covering on insulation is a vapor retarder, not barrier: http://www.dyplastproducts.com/water..._permeance.htm

Check with your local Building Inspector as to vapor barrier or retarder required: http://www.ecohomemagazine.com/energ...gy-claims.aspx

http://www.energysavers.gov/your_hom.../mytopic=11810

Be safe, 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 06-21-2010, 04:50 PM   #6
Newbie
 
Join Date: Jun 2010
Posts: 3
Rewards Points: 10
Default

Shed Insulation


I was thinking of using the bat insulation, I just wanted to be sure that would be good enough. Thanks for the input!!

Advertisement

cyrious 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
Moving an 8x10 wooden shed 100 miles; how? (Video of shed inside) snowfall General DIY Discussions 32 10-23-2012 09:54 PM
Cape Cod Style House Attic/Crawl Space Insulation Help Danielg Insulation 24 05-21-2012 09:20 AM
How To Install Rigid Foam Insulation on Concrete earthad1 Building & Construction 9 10-26-2010 10:49 AM
wiring a detached shed for AC power *and* generator backhaul wrooster Electrical 19 05-28-2010 12:59 PM
Shed roof insulation rcp612 Building & Construction 3 05-01-2010 06:28 PM




Top of Page | View New Posts