Aug 19, 2013 at 10:37 am #1306697
So I don't live in the USA and can't buy that new-ish Never Wet super waterproof double spray stuff. Tyvek is hard to get a hold of where I live too. But ever since the Never Wet stuff came out, one of the first things I thought of doing if I had it was to make a flat tarp with Tyvek, and then spray the heck out of it with NW.
Anyone done this yet? Or something similar? Or is this where someone (probably Anna) links to a thread and makes me look foolish…
… but HA! I already did a quick search and read all of this thread:
No tarp test there.
It just seems that because Tyvek is very water resistant and fairly cheap, that add this spray and it would be really good for things like tarps. Though I hear that it rubs off easy, but a tarp does not get that much abrasion. Maybe someone has a TT Sublite they could spray with it?
I want to read about more experiments and see more nerdy pictures people!
Edit: typos :/Aug 19, 2013 at 10:41 am #2016582
Link .BPL Member
That's funny Cesar,thanks for making me laugh :)Aug 19, 2013 at 11:07 am #2016586Aug 19, 2013 at 11:18 am #2016589
Link .BPL Member
I like it :)Aug 20, 2013 at 10:01 am #2016908
Tyvek 1443 has a hydrostatic head of 7622mm while Tyvek 1460 is 1270mm. That is enough to stop most rain.
Tyvek is made from polyethylene which is naturally hydrophobic. Neverwet is Superhyrophobic and probably will not change the hydrostatic head like all other DWR treatments.
Adding neverwet to tyvek will probably not make much of a difference. It will however add weight.Aug 20, 2013 at 11:14 am #2016936
Henry SBPL Member
My take is that anything you apply to Tyvek will reduce its breathability and if you do that then you've destroyed its best quality. I agree that Tyvek 1443R–the material we use in the Sublite–is remarkably water resistant. However, it does absorb some water and takes much longer to dry out than a coated fabric. For that reason you would want to think twice about using it in wet environment, at least if you intend to carry it.
-HAug 21, 2013 at 4:14 am #2017216
Yeah, I can see why one would not want to spray a Sublite considering the issue of breath-ability–thanks Henry. A tarp on the other hand, I would still be interested in seeing if this would be an effective thing to do. While Tyvek is very water resistant, NW could in theory make it waterproof and unable to absorb any water. And cheap to boot.
Just a brainstorm I had. I am surprised there seems to be not as much experimentation with NW now that it has been on the market for some time.
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