So I am putting some thought into a SUL kit for summers here in the SE. My main goal is to keep the cost down and the versatility high.
I am thinking that the cheapest tarp would be a 5'x8'(ish) tarp using 2nds silnylon from DIY Gear Supply. Coming in at about $20 for everything I need.
The problem with this though is that most people seem to favor using a bivy for a tarp this size, especially for splash protection. However, in my mind, adding a bivy will cost weight and money, most importantly money. My thought is that I can add the splash protection right into the quilt, like the cuben fiber Enlighted Equipment quilts.
I don't want to make the whole quilt out of waterproof material because it is far too hot for that, but I was thinking a liner out of 1.1oz breathable nylon and a shell that has a strip of nylon about 28" wide down the center with the sides of it being made from silnylon.
I've never seen anyone use silnylon on a quilt, just cuben. Is there a reason for this? It shouldn't add much weight over nylon, I suspect.
Does anyone think this just won't breath well enough? I haven't used a quilt with non-breathable fabric before, so I am just trying to get some thoughts.