I'm thinkin' it's tarp time for the 8 x 16 deck. An exterior wall rising
vertically some 16' above the deck invites some roller-type tarpaulin that
unrolls to cover the deck at a steep angle, tied off to nearby trees.
Hokey, or is this done?
Oh, it's done. You'll want to get some high-quality canvas, though;
search for commercial suppliers for restaurants with outdoor cafes,
which sometimes have something of this nature.
I would add in supports for the tie-downs, though, and save the trees
from doing the job. It might be as simple as an aluminum pipe.
If cost is not a problem, there are commercial ones that come with all
the hardware, easy roll-up and let-down, neat installation etc. I
wouldn't try to re-invent the wheel unless finances require it.
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