24g Tyvek overmitt

Online custom kite building material suppliers often carry Tyvek 1443R. The 1443R Tyvek is water repellant, breathable, softer & much more flexable than Tyvek Housewrap. However, the softer side of the 1443R is not nearly as durable as Housewrap. The fibers tend to lift when abraided. Something I like about the 1443R is its ability to absorb & hold polyurethane coatings, such as those sold to renew old tent floors that have lost some or all of their coating. PolyCoat, by Aquaseal, is a brand that I have used sucsessfully. If you lightly paint the 1443R with the polyurethane it becomes much more durable & waterproof. After lightly coating, the 1443R weighs appox 1.4 oz per sq yard. You can coat the 1443R before or after assembly. I have used this material to make bivy bags that are waterproof on the bottom, ends & sides when coated, yet breathable & water repellant on top. I have also coated the light weight disposable 1443R overbooties, sold for industrial use. These make very light winter mukluks for around camp. So far the coating has lasted thru 6 years or so of occasional use.
I would suggest that if you glue 1443R seams, do hard side to hard side. The softer side will delaminate easily when bonded. If you sew the 1443R, use a long stich length, appox 8 per inch, & do not back stich at the ends of seams, but rather glue seam ends with something like Fray Check. Tyvek is prone to tearing when stiching over perferates the material. You can use the PolyCoat as a seam sealer if your project is sewn.

One of many kite supplies "Kite Studio" link:

http://www.kitebuilder.com/catalog/product_info.php/cPath/24_162/products_id/666?osCsid=8aded11acc2fba731883b13fcdc932a9

One brand of polyurethane coating "PolyCoat" link:

http://www.aquaseal.com/polycoat.html

"Dritz Fray Check" link:

http://www.dritz.com/brands/showcase/details.php?ITEM_NUM=674

Hi John!

Thanks for your feedback/knowledge about Tyvek type 1443R. I did reach some of the online kite builders to get the prices for Tyvek but the shipping is just to insane for such a light cloth so I'll stick
to what I have for now (do you by any chance have few yards of R1433 left you are willing to part with?).

By hard side to hard side you mean the shinny smooth side or more structured (in my case grey side) side's should be glued together. After I tested seam strenght on above mitts the fabric was easy to pull apart (i glued shiny white sides together) but on the peg sack I've made glueing grey sides together the bond is so much stronger and if you try to pull the seam apart fibers do lift but the seam stays strong?

I have Fedex mail tyvek envelope left from recent purchase in US is that the 1443R Tyvek type as it feels much lighter, softer and thinner to the tyvek I've worked with?

Thanks again,
Cheers