Re: Tyvek ground cloth

Thanks John that sounds good!
Keep us posted if you discover any thing else!

Here is one potential source from the art/packing area:
www.masterpak-usa.com

Jim

--- In [email protected], John Ladd <johnladd@...> wrote:
>
> I just got a sample of Tyvek 1460, which is a cloth-type Tyvek without the
> surface treatments that reduce hydrostatic head rating for water
> penetration (1460 exceeds 50).  It's available by the yard at Quest
> Outfitters.
> 
> http://questoutfitters.com/uncoated_fabrics.htm#TYVEK
> 
> I have *not* field tested it yet.
> 
> Quest also carries the 1443R, which is a bit lighter, but has Corona
> treatment that reduces the hydrostatic head rating considerably (from over
> 50 to under 15). I have used this (from a kite distributor) in the field
> and found it quite useful. I got the 1460 on a search for a version that
> was similarly useful but had a higher rating for water repellency.
> 
> 
> There's also a promising grade Tyvek14M, lighter than 1460, but more water
> repellant than the 1443R. It is also not Corona treated (so hydrostatic
> head over 50). I am hopeful that it may combine the light weight of the
> 1443R with the water repellency of the 1460.
> 
> So far I've seen it sold only in bulk (60 inches by 10 yards and larger)
> 
> http://www.materialconcepts.com/store/products/60-x-10-yard-tyvek-14m
> 
> It may, apparently, be available by the yard at distributors of fine art
> packaging materials. But I haven't found them yet.
> 
> I have not field-tested either 1460 or 14M, but I now have both, and will
> try to test them this summer.
> 
> I attach spec sheets for 1460 and some information about 14M. I've been
> told that the 14M also has a 50 rating for hydrostatic pressure and it's
> about 40% lighter than the 1460, on my scale.
> 
> The supplier who sent me a sample has offered to distribute it through
> Quest Outfitters if there's a demand for it.
> 
> John Curran Ladd
> 1616 Castro Street
> San Francisco, CA  94114-3707
> 415-648-9279
> 
> 
> On Mon, Jun 10, 2013 at 7:05 PM, jrwooden <jim@...> wrote:
> 
> > **
> >
> >
> >
> > yes ... that is the same chart I was looking at ...
> >
> > Type 10 – Is the stiff smooth paper-like stuff for printing/packaging
> > applications so crunchy... so less than ideal...
> >
> > Type 16 – perforated for high air permeability so seems a bad plan...
> >
> > Type 14 – softer fabric-like series, and OF THE 14xx series the 1422A is
> > the only one with the hydrostatic head rating...so that's where I was
> > thinking of going...........
> >
> > I had an e-mail exchange a while back with Dupont on the topic, but the
> > agent I was working with could not really get his head around the
> > ground-cloth application ;-/
> >
> >
> > Jim
> >
>