If you were Registered and logged in, you could reply and use other advanced thread options
|
Posted by Mark Horn on August 7, 2006, 4:56 pm
>>Specifically, PLYGOOD Ultra. Is this a sufficient substitute for
>>not wrapping the house?
>>
>
> Looks like it should be. It seems to be non-permeable and has a film on the
> outside. I used Dow Tuff-R on my house, a similar product, and it is designed
> to function as the primary water barrier.
Maybe that's the reason that my inspector doesn't seem to be as
worried as the folks in this newsgroup appear to be.
The only thing is that the plygood ultra isn't installed everywhere.
It's installed lots of places, but not everwhere. So for example,
none of the gables have it. The entire front of the house doesn't
have it. It's pretty much on the sides of the house inside the
corners, and in a few patchwork places at the back of the house.
By far the vast majority of the house sheathing is OSB.
Here's a link to a picture showing where the green guard is:
http://hornclan.com/~mark/greenguard.jpg
Thoughts?
|
|
Posted by DT on August 8, 2006, 12:30 am
>The only thing is that the plygood ultra isn't installed everywhere.
>It's installed lots of places, but not everwhere. So for example,
>none of the gables have it. The entire front of the house doesn't
>have it. It's pretty much on the sides of the house inside the
>corners, and in a few patchwork places at the back of the house.
>By far the vast majority of the house sheathing is OSB.
>
>Here's a link to a picture showing where the green guard is:
>
>http://hornclan.com/~mark/greenguard.jpg
>
>Thoughts?
My thoughts are that the placement is just plain dumb. There is no rhyme or
reason to it, the contractor probably had some left over from another job. It
certainly will not function as a primary water barrier. They are also using it
in place of the osb. I prefer a solid osb sheath for strength, then foam
board over every square inch for insulation and waterproofing, joints
staggered from the osb. Then install the windows and seal with self adhering
flashing.
--
Dennis
|
|
Posted by crhras on August 8, 2006, 1:31 am
Normally I would completely agree with DT. The placement of the plyboard
seems off the wall and appears to defeat its purpose as a moisture/air
barrier. However, the picture on the distributor's web site seems to show
an application which looks kinda like yours. I mean some of the model
house (non-structural I think) is covered by green plyboard and the rest
OSB. I think if you want a definitive answer you should call the
distributor, send them your pictures and get their opinion of the correct
application of their product.
It think the product is probably a very good one. Your problem, if you have
one at all, would be with the application.
Here's their number 1-888-828-2850. In fact, they are here in Chicago. If
they give you any trouble, I'll go knock on their door for you.
>
>>The only thing is that the plygood ultra isn't installed everywhere.
>>It's installed lots of places, but not everwhere. So for example,
>>none of the gables have it. The entire front of the house doesn't
>>have it. It's pretty much on the sides of the house inside the
>>corners, and in a few patchwork places at the back of the house.
>>By far the vast majority of the house sheathing is OSB.
>>
>>Here's a link to a picture showing where the green guard is:
>>
>>http://hornclan.com/~mark/greenguard.jpg
>>
>>Thoughts?
>
>
> My thoughts are that the placement is just plain dumb. There is no rhyme
> or
> reason to it, the contractor probably had some left over from another job.
> It
> certainly will not function as a primary water barrier. They are also
> using it
> in place of the osb. I prefer a solid osb sheath for strength, then foam
> board over every square inch for insulation and waterproofing, joints
> staggered from the osb. Then install the windows and seal with self
> adhering
> flashing.
>
> --
> Dennis
>
|
|
Posted by DT on August 8, 2006, 9:17 am
crhras@sbcglobal.net says...
>
>
>Normally I would completely agree with DT. The placement of the plyboard
>seems off the wall and appears to defeat its purpose as a moisture/air
>barrier. However, the picture on the distributor's web site seems to show
>an application which looks kinda like yours. I mean some of the model
>house (non-structural I think) is covered by green plyboard and the rest
>OSB.
The key to the placement of the Plyboard in the picture on the web site is, as
you point out, the non-structural areas. Corners, dormers, rim joists, etc all
use osb, and the foam board is placed in the center areas. That method was
popular in my area 20 years ago. But I haven't seen it used in quite a while.
Everyone covers completely with osb, then completely with foamboard. That way
you have the full benefits of both high shear strength and increased
insulation.
But Mark's house is just random placement covering a small percentage of the
area.
--
Dennis
|
|
Posted by Plan Review Section on August 8, 2006, 6:05 pm
FWIW, house wrap is NOT required by the IRC with vinyl siding, but it IS for
the stone veneerunless a 1" air space is provided.
(However, for vinyl siding, states in colder regions, Minnesota for example,
require it as a infiltration barrier.)
If you access it the IRC, the requirements for sheathing paper are in Table
R703.4.
> Hi,
>
> I've read a few threads in this group about house wrap.
> In particular, someone named "betty" wrote about her house not
> being wrapped nor the windows flashed.
>
> My wife & I just contracted to build a house with a tract builder.
> During the contract signing, the representative went out of his way
> to point out that they don't wrap the house. The exterior of this
> house will be vinyl siding and stone.
>
> I've read the "betty" thread and the following:
>
>
http://www.umass.edu/bmatwt/publications/articles/housewraps_feltpaper_weather_penetration_barriers.html
>
> http://www.buildingscience.com/resources/walls/default.htm
>
> I'm beginning to be worried. A few questions:
>
> 1) Should I be worried?
>
> 2) How common of a practice is this?
>
> 3) Is there some other type of water barrier that I'm unaware of
> other than house wrap?
>
> Thanks,
> - Mark
|
Page 3 of 4 < 1 2 3 > last >>
| Similar Threads | Posted | | No house wrap???? | August 6, 2006, 9:51 am |
| Re: Use house-wrap under vinyl siding? | June 28, 2008, 8:45 pm |
| Tyvek Wrap | November 19, 2006, 9:19 am |
| Looking for a thin material to wrap porch beam | November 8, 2006, 7:11 pm |
| New House A/C | June 26, 2008, 12:02 pm |
| Problem with new house | November 30, 2006, 10:56 am |
| new rafters on old house | December 6, 2006, 7:41 pm |
| House renovations | February 2, 2007, 12:57 am |
| New photos of our house | February 20, 2007, 1:45 pm |
| House upon a ROCK | July 4, 2007, 8:00 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap