I'm making shade flys out of 7 oz cotton/ poly twill and I don't spray them with anything. They aren't designed to keep people dry, just out of the sun. They'll keep the majority of weather off you, unless it's a downpour and then you are going to get wet.
I choose colored fabric as I have had issues with undyed plain cotton mildewing. The Canvak might help to prevent that but I haven't used it.
Your 9 oz cotton twill should work and if it is undyed, just seal it with the Canvak.
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Date: 2009-06-15 01:47 pm (UTC)I choose colored fabric as I have had issues with undyed plain cotton mildewing. The Canvak might help to prevent that but I haven't used it.
Your 9 oz cotton twill should work and if it is undyed, just seal it with the Canvak.