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Tyvek
Posted:
Tue Sep 10, 2019 8:15 amby wysedav
Has anyone used used Tyvek under their Alumiumn skinned teardrop? Seems pretty easy and an extra layer of protection. I'd use a little 3M 77 to hold it in place on the wood, overlap the roof over the sides and seal with Tyvek tape.
just wondering if it seems worth it...I have the Tyvek on hand already.
Thanks,
David
Re: Tyvek
Posted:
Tue Sep 10, 2019 8:38 amby halfdome, Danny
I don’t see the need for it and the spray adhesive might melt it.
I use Wilsonart contact cement on the plywood and scuffed aluminum,it gives a great bond that lasts.
Danny
Re: Tyvek
Posted:
Tue Sep 10, 2019 1:17 pmby Aguyfromohio
Tyvek is entirely polyethylene, same as a milk jug, so it's probably unaffected by common solvents.
Re: Tyvek
Posted:
Tue Sep 10, 2019 1:49 pmby RJ Howell
Okay, I have to ask... Why?
If your'e going to cover with aluminum, and it's wind and water tight... Again why?
I just see bonding issues for something not required.
I love the curious mind though.
Tyvek
Posted:
Tue Sep 10, 2019 11:56 pmby Greg M
Will Tyvek stick with glues? Polyethylene is pretty slippery when it comes to adhesives.
Re: Tyvek
Posted:
Wed Sep 11, 2019 8:02 amby Aguyfromohio
Greg M wrote:Will Tyvek stick with glues? Polyethylene is pretty slippery when it comes to adhesives.
That is an excellent point.
In you can't glue to polyethylene or polypropylene with common adhesives, you need to use special adhesives or special techniques like flame treatment.
Re: Tyvek
Posted:
Wed Sep 11, 2019 10:10 amby RJ Howell
Greg M wrote:Will Tyvek stick with glues? Polyethylene is pretty slippery when it comes to adhesives.
According to the Tyvek website you can, but with water based. They also say to test first, so even they don't have a good answer. Most commercial use when glueing in hot glue, assuming sheets like doing veneer work.
I looked at this as a possible PMF. I just saw too many issues..
Re: Tyvek
Posted:
Wed Sep 11, 2019 11:51 amby tony.latham
Just seal the cabin with polyurethane or epoxy before you sheath it and be done with it.
Both of those liquids soak into the wood, unlike a membrane ––which water could wick under.
T
Re: Tyvek
Posted:
Wed Sep 11, 2019 3:25 pmby wysedav
Ok, I was just thinking it would be a good secondary barrier. I don't think anything really needs to be bonded to it. It's just a floating skin like the aluminum. If the seal at a window or vent to the aluminum fails this would still be there to keep the water away from the wood.
Probably not necessary, I'm sure the sealants are much better than 20 years ago.