Sweating Pole Barn - Insulation - DIY Chatroom Home Improvement Forum
Advertisement


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

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

Reply
 
Thread Tools Search this Thread
Display Modes
Old 12-15-2014, 05:20 PM   #1
Member
 
Join Date: Feb 2012
Posts: 83
Rewards Points: 119
Default

Sweating pole barn


I have a 30x40 pole barn w/ a slab in Northern WI that was built locally by a company that is no longer around. There is no insulation and 1 roll up 1 vehicle door and 15'+ wide sliding doors, as well as 2 windows.

We've had 50 degree, foggy, muggy days that have melted all the snow, so the humidity has been right up near 100% With the barn and contents being cold, it is sweating to the point that it is basically raining in there. Everything is soaked and dripping.

I know that anywhere warm and humid meets cold you get condensation so there probably isn't much to do and this is just nature sticking it to me, but I do have this problem in the spring to a lesser degree. I don't want to fully insulate and tearing everything off to put vapor barrier under the metal isn't going to happen.

Are there any ventilation solutions that would help with this or is it just the nature of the beast with this type of "cold storage" building? If nothing else, I guess I have a good excuse to scrub all the rust off my jointer and Unisaw tables when it cools off again.
rich_kildow is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-15-2014, 05:33 PM   #2
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 26,054
Rewards Points: 906
Blog Entries: 41
Default


The only thing you can do if you're not going to address the insulation and vapor permeance limitations is to ventilate the structure or install some sort of dehumidification unit.
Windows on Wash is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-15-2014, 06:05 PM   #3
Member
 
Join Date: Feb 2012
Posts: 83
Rewards Points: 119
Default


Are there any solutions that can be installed without stripping the building of the metal panels? I would think that spray foam would be about the only since the vapor barrier has to go right against the metal, between the sheets and trusses/purlins.

How thick would closed cell foam have to be just to give me a vapor barrier? 1 or 2 inches?

Last edited by rich_kildow; 12-15-2014 at 06:27 PM.
rich_kildow is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-15-2014, 07:10 PM   #4
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 26,054
Rewards Points: 906
Blog Entries: 41
Default


2" should be fine but it will have to be covered with a proper intumescent barrier.
Windows on Wash is offline   Reply With Quote
Old 12-15-2014, 08:47 PM   #5
Member
 
Join Date: Feb 2012
Posts: 83
Rewards Points: 119
Default


How about something like this:

http://www.radiantguard.com/reflective-insulation.aspx

Installed per their instruction like this:

http://www.radiantguard.com/instruct...stallation.pdf

As much as I like the idea of spray foam, even if I got it for $2 per board foot, I'd be well over $3000. This seems like it would give me the vapor barrier I need for a minimal cost. Anybody have any experience with it?
rich_kildow is offline   Reply With Quote
Old 12-16-2014, 06:58 AM   #6
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 26,054
Rewards Points: 906
Blog Entries: 41
Default


That will work fine but if it were me, I wouldn't leave that exposed either and you need to detail out all the seams and make sure they are airtight.
Windows on Wash is offline   Reply With Quote
Sponsored Links
Advertisement
 
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
Vapor barrier for a Pole Barn maddog1 Building & Construction 3 08-22-2012 10:18 AM
400 amp service pole barn and home later walt1955 Electrical 2 06-29-2012 09:08 AM
Can you raise the roof on a pole barn after it's built? LMPD Building & Construction 12 03-24-2012 10:06 AM
Horse Barn Wiring - Pole Barn hagler Electrical 5 03-02-2012 10:23 PM




Top of Page | View New Posts