Hello,newby,first post...Bought this 2002 Coachman,really low miles.decent shape except...noticed the covering on the nose in the overhead had SLIGHT evidence of water but other than that,no leaks any...
I've discovered that commercial suppliers and fabricators exist for all kinds of materials, and they're happy to sell some to the average guy doing a project. Just Google plastic sheeting or whatever you want and visit a couple places for quality, thickness, and negotiate pricing.