I suspect that my previously super light Nike windshirt possibly uses Silnylon--if not, it's extremely hard to blow or suck through in a breathe test. I also have another older wind jacket that i know as a PU coating, which makes it extremely non breathable. Since neither are rain jackets, i want to remove at least some of the coating.
I've thought about just soaking them in fairly hot, soapy water, and going over them with the scrubby side of a sponge. I don't need to get all the coating off, just trying to increase the breathability to some extent.
Would the above work, or do i need more arcane chemical methods? If so, anybody know anything cheap, effective, and easy to do?