I am planning to make a tarp with some nylon I got a WalMart. It is not the slippery silny. It seems pretty water repellant though. I heard there is a way to mix up a homebrew of silicone and mineral spirits to coat the material with. What is that recipe? Where do you buy silicone? The only silicone I know of is RTV?
Next how do you tape the seams so they don't leak. I read something about gluing strips of nylon over the seam on the inside.
I have search this forum several times for these topics but I can't find them now. Thanks for your help!!!