House Wrap Question - 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 06-11-2013, 10:44 AM   #1
Member
 
Join Date: Apr 2013
Posts: 330
Rewards Points: 250
Default

house wrap question


When you have exterior rigid foam in addition to the sheathing should you apply the house wrap before the rigid foam directly to the sheathing or over the rigid foam? My thinking is the house wrap needs to be the last line of defense against any possible water getting in so I would fasten directly to sheathing. But if you do that you should integrate the house wrap with the flashing, therefore, the window would have to go in before the rigid foam, correct?

Advertisement

markharmon is offline   Reply With Quote
Old 06-11-2013, 12:40 PM   #2
Maryland
 
Join Date: Jan 2011
Location: Eastern Shore, MD
Posts: 407
Rewards Points: 250
Default

house wrap question


Quote:
Originally Posted by markharmon
When you have exterior rigid foam in addition to the sheathing should you apply the house wrap before the rigid foam directly to the sheathing or over the rigid foam? My thinking is the house wrap needs to be the last line of defense against any possible water getting in so I would fasten directly to sheathing. But if you do that you should integrate the house wrap with the flashing, therefore, the window would have to go in before the rigid foam, correct?
Just my opinion... but it should be sheathing, WRB and then foam. You can use something like Tyvek drainwrap for your WRB which would allow any trapped water to escape from behind the foam. As far as windows, why not just flash conventionally, install your window and then install padding/furring the same thickness as the foam around the window openings? The foam would butt to the padding/furring.

Advertisement


Last edited by Pittsville; 06-11-2013 at 12:50 PM.
Pittsville is offline   Reply With Quote
Old 06-11-2013, 05:20 PM   #3
Member
 
Join Date: Apr 2013
Posts: 330
Rewards Points: 250
Default

house wrap question


Quote:
Originally Posted by Pittsville View Post
Just my opinion... but it should be sheathing, WRB and then foam. You can use something like Tyvek drainwrap for your WRB which would allow any trapped water to escape from behind the foam. As far as windows, why not just flash conventionally, install your window and then install padding/furring the same thickness as the foam around the window openings? The foam would butt to the padding/furring.
You mean install the window before or after the foam?
markharmon is offline   Reply With Quote
Old 06-12-2013, 08:19 AM   #4
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 7,088
Rewards Points: 3,244
Default

house wrap question


More details needed on the windows. Are you doing them at the same time?

You can do it either way but if I were going to guess, most situations dictate that we wrap the sheathing first as Pittsville as well.
Windows on Wash is offline   Reply With Quote
Old 06-12-2013, 01:29 PM   #5
Member
 
Join Date: Apr 2013
Posts: 330
Rewards Points: 250
Default

house wrap question


Quote:
Originally Posted by Windows on Wash View Post
More details needed on the windows. Are you doing them at the same time?

You can do it either way but if I were going to guess, most situations dictate that we wrap the sheathing first as Pittsville as well.
Sheathing wrapped yes then rigid foam then install the new const. window or install foam after window is installed?
markharmon is offline   Reply With Quote
Old 06-12-2013, 03:44 PM   #6
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 7,088
Rewards Points: 3,244
Default

house wrap question


Window outside the foam is easiest and more straightforward.

That being said, I prefer the housewrap over the foam and over the flashing of the window.
Windows on Wash is offline   Reply With Quote
Old 06-12-2013, 03:58 PM   #7
Mod
 
kwikfishron's Avatar
 
Join Date: Mar 2010
Location: Kansas (NCK)
Posts: 7,801
Rewards Points: 2,506
Default

house wrap question


Personally I don't like installing a flange window over foam. I'll pack out the framing the thickness of the foam, bring the foam up to that then flashing/housewrap.
__________________
A Picture Is Worth A Thousand Words
Especially In The DIY Chatroom
kwikfishron is online now   Reply With Quote
Old 06-12-2013, 04:35 PM   #8
journeyman carpenter
 
woodworkbykirk's Avatar
 
Join Date: Sep 2011
Location: nova scotia canada
Posts: 2,766
Rewards Points: 2,148
Default

house wrap question


kwik, if you do it that way you lose the thermal break at all your rough openings.. as for window first then foam. NO!! youll then have to install trim aroiund all the windows in order to have something for the siding to die into
woodworkbykirk is online now   Reply With Quote
Old 06-13-2013, 08:51 AM   #9
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 7,088
Rewards Points: 3,244
Default

house wrap question


Quote:
Originally Posted by kwikfishron View Post
Personally I don't like installing a flange window over foam. I'll pack out the framing the thickness of the foam, bring the foam up to that then flashing/housewrap.
We don't like fastening to foam either but we make a sip panel around that opening to bring it level with the foam and still get the thermal break.

Quote:
Originally Posted by woodworkbykirk View Post
kwik, if you do it that way you lose the thermal break at all your rough openings.. as for window first then foam. NO!! youll then have to install trim aroiund all the windows in order to have something for the siding to die into
+1

Makes the trim details much more of a PITA and I just had to finally argue with a client and get them to go with an outie window locate.

Advertisement

Windows on Wash 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
3/4" Styrofoam & House wrap Bubbles17 Insulation 7 03-16-2013 11:21 PM
House on Crawl Space - Sagging Center Beam - Need Advise stevenrossi Building & Construction 8 12-23-2012 12:35 PM
House wrap after windows and doors? claxton Building & Construction 2 12-10-2011 10:10 PM
newby question regarding re-wiring house... dakotajoe Electrical 9 06-27-2011 11:04 PM
Patio roof to house attachment question mikemobile Building & Construction 1 09-30-2008 08:51 AM




Top of Page | View New Posts