Tyvek

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Tyvek

Postby rainjer » Wed Apr 12, 2006 4:40 pm

Has anyone tried using Tyvek as a moisture barrier under their skin/roof?

It seem it would be good insurance to help prevent leaks. It is breathable & water resistant.
More info:
http://www.tyvek.com/whatistyvek.htm

I was thinking of using it between the roof spars & the skin. It is light weight & I can get it for free.

Any thoughts.
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Postby Chris C » Wed Apr 12, 2006 4:43 pm

Do a "search" on it and I think you'll find it's been discussed before.
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Re: Tyvek

Postby Slayer » Thu Apr 13, 2006 6:25 pm

rainjer wrote:Has anyone tried using Tyvek as a moisture barrier under their skin/roof?

It seem it would be good insurance to help prevent leaks. It is breathable & water resistant.
More info:
http://www.tyvek.com/whatistyvek.htm

I was thinking of using it between the roof spars & the skin. It is light weight & I can get it for free.

Any thoughts.

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Re: Tyvek

Postby alaska teardrop » Thu Apr 13, 2006 8:43 pm

rainjer wrote:Has anyone tried using Tyvek as a moisture barrier under their skin/roof?

It seem it would be good insurance to help prevent leaks. It is breathable & water resistant.
I was thinking of using it between the roof spars & the skin.
Any thoughts.
    Rainjer,
    If your skin (wood, aluminum, ect.) and fasteners are sealed, I see no advantage in creating a barrier directly under the exterior. An interior vapor barrier or insulation choice would be more important in cold weather to protect the inner framing and insulation from moisture damage from within.
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Postby Chris C » Thu Apr 13, 2006 9:35 pm

rainjer,

One thought came to mind while I was out running errands this afternoon. If you put a vapor barrier (like Tyvac) down under your teardrop skin, what surface will you have to glue your skin to????? :thinking:
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Postby rainjer » Thu Apr 13, 2006 9:37 pm

Chris C wrote:rainjer,

One thought came to mind while I was out running errands this afternoon. If you put a vapor barrier (like Tyvac) down under your teardrop skin, what surface will you have to glue your skin to????? :thinking:


I had not thought of that..... :thinking:
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Postby asianflava » Thu Apr 13, 2006 11:43 pm

Check the search under "Vapor Barrier"
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Postby Melvin » Fri Apr 14, 2006 9:09 pm

FYI: Tyvec is not a vapour barrier, it's a water and air barrier. Water vapour goes through it like a hot knife through butter.
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Postby cracker39 » Sat Apr 15, 2006 7:38 am

Chris C wrote:rainjer,

One thought came to mind while I was out running errands this afternoon. If you put a vapor barrier (like Tyvac) down under your teardrop skin, what surface will you have to glue your skin to????? :thinking:


That's why I didn't put any vapor barrier other than my foil-backed foam insulation. I wanted good wood to wood contact between the skins and frame. I put Tyvek on my previous house in Maryland when I replaced the old composite siding with vinyl siding.
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Postby Chris C » Sat Apr 15, 2006 7:54 am

Melvin wrote:FYI: Tyvec is not a vapour barrier, it's a water and air barrier. Water vapour goes through it like a hot knife through butter.


You are quite correct...........my error. But the net result of him using Tyvek would be that he'd lose the neccesary requirement of good wood to wood contact for the gluing process.
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