davek
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Post by davek on May 25, 2015 19:39:02 GMT -8
Are there any build threads that go into detail on wrapping a trailer with tyvek before skinning?
Anyone know if it is thick enough to cause major issues with getting the seams to fit back together properly?
Any idea if tyvek holds up to being under the skin of a trailer? I am concerned that holes will be created from the movements of being towed.
Thanks for any info
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SusieQ
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Post by SusieQ on May 25, 2015 19:59:28 GMT -8
Davek, there are a few threads here about vapor barriers. If you do a search they may be helpful to you. Also, Mobiltec has a pics and a video of adding a vapor barrier. I've never seen anyone use Tyvek before (that doesn't mean it hasn't been done). Most use a plastic or the stuff used under flooring.
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John Palmer
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Hi, From a vintage trailer guy located in Santa Ana, CA. It's good to see lots of activity here.
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Post by John Palmer on May 25, 2015 20:25:54 GMT -8
Wrap it, and put the skins on.
Tyvek is "maybe .010" thick, and it goes "under the skin, not "in between" the seams, so it won't have any effect with the fitment of the skins.
The small expansion movement of the skins will not "wear it out" and cause holes. These trailers lasted for sixty years without anything more than a 1/4" thick piece of fiberglass insulation under the skins. When we fill the framing voids with ridged foam, then wrap the trailer in a vapor barrier like Tyvek, they will be much better insulated, and the warm/damp interior air will not be able to get to the cold skin to cause condensation, and the associated wood rot problems.
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John Palmer
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Post by John Palmer on May 25, 2015 20:31:25 GMT -8
Most use a plastic or the stuff used under flooring.
Not a good idea. The plastic disintegrates in a short period due to heat.
The trailer builders that I know, all use Dupont Tyvek (a brand name), or one of the many generic house vapor barrier wraps commonly available at building materials stores.
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SusieQ
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Post by SusieQ on May 25, 2015 20:58:40 GMT -8
Most use a plastic or the stuff used under flooring.
Not a good idea. The plastic disintegrates in a short period due to heat.
The trailer builders that I know, all use Dupont Tyvek (a brand name), or one of the many generic house vapor barrier wraps commonly available at building materials stores.
I knew you were going to call me on that one. I hesitated, even deleted and retyped the word "plastic". I shouldn't have used that word and wasn't referencing regular plastic stuff. My main point was to search the threads for info because vapor barriers have been a big topic of discussion. I know I watched Mobiltec go into Home Depot and buy the roll of flooring vapor barrier. Some people use insulation with a vapor barrier side. Some people use no barriers. I have my own theory about vapor barriers for my climate. davek, if John says it will work, it will work. And don't use PLASTIC! |
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davek
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Post by davek on May 26, 2015 20:13:44 GMT -8
Great thanks for the info.
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Post by schweetcruisers on May 27, 2015 6:40:04 GMT -8
Wrap the sides first, then do the roof, extending from the hitch to the bumper lapping over the sides. Use Tyvek brand take to seal the seams.
I would highly recommend Tyvek or similar vapor barrier that is made out if spun fibers. They allow moisture to escape but not enter the structure(when installed properly)
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