DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Framing and Foundation > replace vapor barrier?





Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 10-12-2007, 01:43 AM  
antho177
Junior Member
 
Join Date: Oct 2007
Posts: 3
Default replace vapor barrier?

So I thought I'de rip out some banged up dry wall, Patch it up and be done with it. Next thing I know, I've got the insulation down and most of the black, what I believe is called a vapor barrier, pulled out. I can handle the rebuild; but I don't know what to replace this cloth like lining with. Do I need to replace it? It's stapled to the studs, before the exterior brick wall.
Thanxs



__________________
antho177 is offline  
 
Reply With Quote Quick reply to this message
Old 10-12-2007, 08:13 AM  
Hube
Senior Member
 
Join Date: Apr 2006
Posts: 114
Default

A VAPOR barrier is normally on the inside face of the exterior wall studs,just behind the drywall.
A MOISTURE barrier is usually placed on the exterior side(to the weather) of the studs just before the exterior sheathing/ siding or brick.

I assume you are referring to a vapor barrier. Most Vapor barriers are of a 6 mil plastic sheeting bought in a roll at most bldg/lumber stores



__________________
Hube is offline  
 
Reply With Quote Quick reply to this message
Old 10-12-2007, 11:35 AM  
antho177
Junior Member
 
Join Date: Oct 2007
Posts: 3
Default

now we're gettin somewhere. It's the exterior side, a moisture barrier. Between the studs and the brick. From what I've read, it should be semi-permeable. Can I use plastic?

__________________
antho177 is offline  
 
Reply With Quote Quick reply to this message
Old 10-13-2007, 08:50 AM  
Hube
Senior Member
 
Join Date: Apr 2006
Posts: 114
Default

no, DO NOT use plastic.

There are several types of moisture barriers on the market.(tyvex, tar paper,etc.)
See your local bldg store, they will have it.
Note; plastic vapor barrier, applied to the interior stud face of exterior walls, is meant to stop any humid air WITHIN the home from entering into the wall, thus causing mold, soggy insulation ,etc. within the studs' cavity.

Moisture barriers are meant to be installed on the exterior wall sheathing or in the case of a bricked home, it will be installed just behind so as to stop any ENTRY of moisture from the great outdoors from getting into the studs' cavity causing rot, mold, etc.

__________________
Hube is offline  
 
Reply With Quote Quick reply to this message
Old 10-13-2007, 10:07 AM  
glennjanie
Senior Member
 
Join Date: Mar 2006
Posts: 2,992
Liked 2 Times on 2 Posts

Send a message via AIM to glennjanie
Default

Welcome Antho:
When you replace the insulation you can use batts that have a vapor barrier on the inside. We don't want to make something too hard out of this.
Glenn

__________________
glennjanie is offline  
 
Reply With Quote Quick reply to this message
Old 10-13-2007, 11:34 AM  
antho177
Junior Member
 
Join Date: Oct 2007
Posts: 3
Default

Thanks for the replies. Very helpful. So If I can find "batts", it will provide a sufficient barrier? I should be able to get it at HD or Lowes?

__________________
antho177 is offline  
 
Reply With Quote Quick reply to this message
Old 10-13-2007, 01:06 PM  
Hube
Senior Member
 
Join Date: Apr 2006
Posts: 114
Default

You said previously it was on the EXTERIOR side ,between the studs and the brick, so you do not want a vapor barrier there, you need (as I mentioned in my earlier post)a moisture barrier (next to the brick) a MOISTURE barrier will BREATH, but a vapor barrier does not.
sure, we don't want to make this too hard to do, but to do it right should be # 1 on your list.

__________________

Last edited by Hube; 10-13-2007 at 01:10 PM.
Hube is offline  
 
Reply With Quote Quick reply to this message
Old 10-13-2007, 02:02 PM  
glennjanie
Senior Member
 
Join Date: Mar 2006
Posts: 2,992
Liked 2 Times on 2 Posts

Send a message via AIM to glennjanie
Default

OK Antho:
Let's try this again. With the brick wall in place and the studs in place, its a cinch you are not going to install a house wrap. The least expensive and easiest to handle remedy would be 15# felt (tar paper). Put it in the empty stud space near the outside and staple it to the sides of the studs. There should be a 1" air space between the studs and brick but there are also brick ties so it will be difficult to thread anything into the air space. That will take care of the MOISTURE BARRIER.
Now, you are concerned with the insulation and VAPOR BARRIER. The big box store will have insulation in rolls to fit 16" stud spacing or 24" spacing. The roll is perforated at 4' intervals so you can tear off a BATT at 4 or 8' intervals. This kind of insulation has kraft paper all around it but on the side that says "This side to living space" there is a thin film of tar on the kraft paper (VAPOR BARRIER). It also has a paper flange on each side of the batt which can be stapeled to the face of the studs; or if you prefer, you can staple the flange to the sides of the studs. This will leave the face of the studs clean for placing construction adhesive to hold the new drywall. The glue stuck to the paper flange won't hold anything.
I wish you the best with your project.
Glenn

__________________
glennjanie is offline  
 
Reply With Quote Quick reply to this message
Old 02-14-2008, 11:41 AM  
patterrw
Junior Member
 
Join Date: Feb 2008
Posts: 8
Default

Antho,

How did you make out with this...I am running into a similiar situation now, also in the SE (Coastal SC), and trying to find the best approach.

my construction is (from outsite in) Brick/morter, 15 lb felt paper (tar paper), 2x4 stud wall, and 3/8 in plywood interior sheathing??? there is NO insulation in the walls, and I am looking to add some...we are finishing the room into a 1/2 bath and laundry room.

What did you end up doing with yours?



__________________
patterrw is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

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 On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Time to replace attic insulation? Justluckey Green Energy and Sustenance Living 3 01-11-2011 06:26 PM
Replace pipes in bathroom, need advice Steelmesh Plumbing Forum 2 11-04-2008 07:56 AM
Repair or replace cracked original garage slab ofsoundmind Bricks, Masonry and Concrete 1 09-09-2008 05:58 AM
replace wood column with steel column? Dave928 Framing and Foundation 5 07-05-2008 09:17 PM
Help in Canada - Need to replace a bathtub! andsoitgoes General Home Improvement Discussion 3 05-27-2007 08:47 AM