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General Forum / Re: Vapor Barrier & Zip Panels
« Last post by NathanS on Today at 03:53:22 PM »
I guess after missing studs when nailing up the sheathing I just really didn't like how loose the nails were, and on the inside you could see how the OSB would kind of fragment. Well lots of siding is held on that way just fine.. I wonder what would happen if ya jiggled those boards a little though...

I don't think you have to model anything out. Somewhere in the code book there is a chart that says how much exterior insulation you need to not have an interior vapor barrier. In my zone (guessing same for you) a 2x6 wall is supposed to have like R-11.25 or thereabouts. That would be 2" of polyiso.

What Lstiburek says is the right way to do it, just to be realistic about how dry the air in your house is going to be.

When I did it my process was a conservative 3 month cold average, 70 degrees inside, and then it would be checking how dry the air in the house would need to be to stay above that dewpoint.
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General Forum / Re: Vapor Barrier & Zip Panels
« Last post by SouthernTier on Today at 03:30:38 PM »
Is there a good way to model how thick I should go (other than just plain thicker is better)?

It would defeat the purpose of a continuous barrier, but I could suppose put the furring strips over the 1" and put half-inch in-between the strips.  Doesn't get you anywhere with Rescheck, but maybe gets me somewhere with condensation.  I would have a similar climate as Nathan.
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General Forum / Re: Vapor Barrier & Zip Panels
« Last post by Don_P on Today at 02:42:40 PM »
That is how SIPs work, not a fan but it works I suppose.
For overhangs I've scabbed 4'-6' pieces of 2x4 or 2x6 to the rafters to create the tail without going to custom lengths. At least half the length inboard and secured very well. You have to do a little value math to see which option is better.
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General Forum / Re: Vapor Barrier & Zip Panels
« Last post by NathanS on Today at 12:06:03 PM »
I think 1" in upstate NY is cutting it close. Some of the examples in that book will make assumptions of 20% interior RH to drop the dew point sufficiently.

Also I didn't realize until looking at the code that people install siding into 7/16" OSB. That just seems like a bad idea to me.
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General Forum / Re: Vapor Barrier & Zip Panels
« Last post by SouthernTier on Today at 10:00:54 AM »
Thanks.  I decided to go with a one-inch foam layer on the outside after running Rescheck and found I needed it.  I will still have R-19 or R-21 in the wall cavities.  I have read through that Joe Lstibruck/Building Science book about the building in cold climates and predicting the due points, and it seems like this arrangement would be appropriate for me (northeast, cold climate).  So if I am adding the foam (will stick with one layer of one-inch), and tape it properly, I was thinking that a separate vapor barrier wouldn't be necessary. 

I don't want to go too much thicker than one-inch.  I'd like to stay away from the furring strips because with a constraint of staying with 16-foot rafters, my overhang is already less than I would like, and I don't want to be pushing the wall out any more than I have to.  I figure I can fasten the lap siding (amm thinking of going with LP smartside) through one-inch foam into the studs behind.
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General Forum / Re: painting the fascia 2x6 up 28 feet
« Last post by UK4X4 on Today at 09:06:29 AM »
clipping on....karabiner lightly sellotape'd to a long pole, clip on and pull pole loose

I have a high peak on my UK house and usually use a ladder half way and a windsurfer mast with a roller on it.......its about 4 meters long....and stiff and light enough to paint a long way away !
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General Forum / Re: painting the fascia 2x6 up 28 feet
« Last post by A.O. on Today at 08:42:00 AM »
GET THE RIGHT LADDER...
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General Forum / Re: painting the fascia 2x6 up 28 feet
« Last post by firefox on Today at 08:39:40 AM »
You might be able to jury rig a pole trimmer that has the extension.
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General Forum / Re: painting the fascia 2x6 up 28 feet
« Last post by Dave Sparks on Today at 08:08:04 AM »
No room anymore for scaffolding due to gardener who seems to still love me d*
I will hire the spraying as there just is too much. I do have a hard point on each side to clip myself to but I do have to get up there to clip on ;)

Anybody have a good way to connect to a 1" eyebolt without actually going up to clip?
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General Forum / Re: Weatherport structures
« Last post by ChugiakTinkerer on Today at 07:20:15 AM »
Mine has really served well, and it holds up to the weight of a winter of snow.  I got lucky, because like you I wasnt willing to spend that much for new.  If you haven't seen it yet, SearchTempest is a great way to search Craigslist regionally.
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