Thanks for sharing your thoughts on this. It's always good to hear a variety of input before making a purchasing decision.
Not to be argumentative ... I just wanted to point out that the listing did say:
"Weight (first things first!): 1.3 oz/square yard, including the silicone treatment."
So ... I think we can be sure it's 1.1 ounce (30D) silnylon.
At that price with low shipping costs ... I think I'm going to go ahead and get some. I'll buy some for my tarp, then post here with the results.
Again ... I really want to emphasize that I'm very appreciative of people sharing their thoughts on this and any other subject. It's good to have a thoughtful discussion of the pros and cons of any purchasing decision.
Ok ... I sent a question to the seller, and here is more info:
It is 30D ripstop nylon, 1.1 ounces before coating, 1.3 ounces after silicone treatment.
He has tested it for waterproofness, and said it is very good. He draped the fabric over the opening of a bucket to make a bowl. Then filled the fabric with water, then rubbed it hard and let it sit for a day ... then rubbed it more and sit more. Then took the fabric off and it was completely dry on the inside of the bucket and the bottom of the fabric.
So ... It sounds good. I went ahead and ordered 10 feet to test it out, and I'll share my personal impressions when it arrives.