Does Felt Paper Allow A House To Breathe? - Building & Construction - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 02-07-2009, 08:35 PM   #1
Join Date: Sep 2008
Posts: 260
Rewards Points: 260

Does felt paper allow a house to breathe?

Does felt paper allow a house to breathe? I'm concerned about moisture passing through the interior walls and getting trapped in the framing. My main concern is mold growth behind the drywall and backerboard in a bathroom. The felt is attached directly to the wall studs because of the type of siding.


bluefitness is offline   Reply With Quote
Old 02-07-2009, 09:17 PM   #2
Registered User
Termite's Avatar
Join Date: Apr 2008
Posts: 6,520
Rewards Points: 2,000

In my opinion, yes. Felt is lapped just like lap siding, but certainly isn't airtight. Felt has been around for probably a century and is still used in some capacity on basically every home built today. However, if you're worried about making the wall really breathe, go with Tyvek instead.


Termite is offline   Reply With Quote
Old 02-08-2009, 08:42 AM   #3
Remodeling Contractor
Join Date: Dec 2008
Location: Sandy Hook, CT
Posts: 3,590
Rewards Points: 2,000

Both will allow it to breath. Tyvek allows it to breathe more. Most experts list #15 asphalt felt as having a permeance of 4 or 5 perms. The permeance of housewraps varies from brand to brand; Tuff Weather Wrap has a permeance of 6 perms, Barricade has a permeance of 9 perms, and Tyvek has a permeance of 58 perms. Of course, the ability of asphalt felt or housewrap to resist liquid water penetration is a whole other issue; one can't assume that low permeance wraps resist liquid water better than high permeance wraps.
Bob Mariani is offline   Reply With Quote

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
Connecting main house to guest house... hlavine Building & Construction 31 03-28-2012 09:04 AM
replumbing an old house simonfrog Plumbing 7 01-30-2012 04:45 AM
Using Felt with Cedar Shakes freddmc Roofing/Siding 32 10-08-2011 11:26 AM
Grounding for two service entrances to same house. jogr Electrical 18 09-24-2008 10:31 AM
Is felt paper a sufficient vapor barrier for hardwood floor? jaj808 Flooring 15 03-27-2008 10:57 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1