Mine has 4x8 wood on the sides, 4x4 in front. The top was built on top of that.
I didn't have any plans, just started with an idea and winged it. All corners are gorilla
glued (lots of it). Then I sanded everything and rounded out the corners.
I can't remember what the primer coat was, but then I came back with 3 coats of 25 year latex extreme weather
on top of that. The stripes are just cheap walmart spraypaint.
I've had no water problems at all.
There are two doors on the back, and a third on top that flips up seperately to get to the wing area.(rubber bumpers catch the door when it's flipped up) All the top and sides are
lined in egg crate foam just in case a plane comes un-tied.
Here's some more pictures during painting, and after it was striped, but before all the foam was installed.