I want to make a sizeable inflatable structure about 15'x 15' with a height of around 15'. I want to extend my classroom's workspace during certain times on various days. I need some help with deciding on the material. It needs to be inexpensive but also durable. It would need to handle being outside for a few hours each day for about a month. I also need it not to have a bottom or floor. The shape of the structure could be similar to this:
I think it could be tied or snapped to anchors in the cement. I have read that people have used a 4-mill painter's tarp or Heavy Duty Poly Tarps. But maybe 6 mil Polyethylene Film, Plastic Sheeting, or Nylon Taslon TPU Coated Fabric would work. Do you guys have any suggestions?
Some more info: It will be outside in a patio area. My classroom has a garage door on one side that opens into a patio area flanked by pillars. The patio area in front of the garage doors is open to the sky. But on either side, the patio is covered by the second story of the building I am in. Imagine the space in front of my garage door as a large well. It is excellent for letting sunlight in, but we also get the rain and snow, which can be pretty hot in the summer. Sometimes this space is OK for my classes to utilize, but a lot of the time, it is a problematic space for us to work in. I thought a blow-up structure that could have some environmental controls would be fun and a bit magical. So this inflatable idea would hopefully solve the problem of my need to extend my classroom's workspace during certain times on various days without being completely at the mercy of the Texas weather. I have had inflatables be a project in my classes before, and we have made one about 20 feet square. Here are a few examples: Inflatables in Sculpture Class