Please take a look at disposable safety clothing made from Tyvek. Safety clothing Tyvek is designed to protect against exposure to chemical liquids and vapors. It is much finer, lighter, and not as porous as housewrap. Are you familiar with it? The clothing that I have been wearing, especially the pants have held up to some pretty rough treatment. Tyvek, as in the kind in house wrap is heavier, courser and more porous. This material has it’s limitations but for an ultra-lighter who is looking for reasonable protection in most situations it would seem to be ideal.
I have been wearing Tyvek pants for over 5 years on backpack trips during stormy weather putting significant strain on the seams when squatting, sitting and bending over. I have been amazed at how the lower leg portion has not frayed at all when all of my hiking pants quickly disintegrate at the cuff after only a few trips. I have washed them multiple times with no apparent damage. Recently I have been wearing them as wind pants.
The material is cheap and could produce a very inexpensive SUL tent. If you haven’t examined Tyvek clothing, take a look at. It takes care of water more than adequately and is more breathable than Gore-Tex. In fact the Du Pont promotional material makes the claim that Tyvek is:
“Tyvek® features a protective inherent barrier. Tyvek is 100% High Density Polyethylene, (HDPE), and it's generic trade name is "spunbonded olefin". So, unlike other protective suit fabrics, which have either a film or coating that can be easily scratched or worn away, Tyvek® provides barrier through the entire fabric. As a result, your protection is not compromised unless the clothing has been completely torn which isn’t easy to do because of the strength and durability of Tyvek.® Make sure you’re getting Tyvek.® Ask for itby name. Barrier Protection You Can Trust, Durability That Isn’t Easily Compromised Tyvek® is the industry standard for dry particulate barriers. Microscopic particles as small as 0.5 microns can’t pass through Tyvek® even after it’s been abraded. Tyvek® is an inherent barrier not easily scratched or worn away. Comfort You’d Never Expect Standing still, your body radiates heat and moisture vapor. So, it’s no surprise that working in protective apparel that can’t breathe escalates the problem dramatically and can affect productivity. It’s called heat stress. And, it can seriously compromise your safety, especially in hazardous environments. Tyvek® lets air and moisture vapor pass through. Tyvek® breathes. Breathability is a key factor in reducing heat stress. Tyvek® is six times more breathable than microporous film garment materials. Tyvek® is available in a wide variety of garment styles, such as coveralls, lab coats, smocks and aprons and has a wide range of applications in many different industries.”
This material, it would seem that it would produce an ideal single wall tent.