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Irish cotton would be shrunk by the "paint" which might be nitral buytarate cellulose, or just butaryte cellulose, but any more people are using synthetics like dacron that don't shrink much when dry and and are heat taughtened then have another synthetic coating applied to seal the surfaces and provide ultra violet resistance. They can be one sided, but that is generally reserved for aircraft that operate under 100mph. Aka "flying lawn chairs"
Fabric covered frames have about the same puncture resistance and shear strength as a piece of 1/4" marine plywood.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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