[villagetinker]

My neighbor had canvas installed, this consisted of a steel (?) frame for the canvas that was attached to the aluminum birdcage. They have had continuing leak problems that no one has been able to find or fix. These are along the masonry walls and cause water to drain inside the wall during heavy rain. Also, I am note sure that steel (?) bolted to aluminum is a good idea, this generally leads to corrosion problems.
So when you decide on a vendor, get a guarantee with regard to leakage. I will note that the canvas did survive IRMA, but this was also installed in the area of the bird cage between the house and masonry walls, not in the area with just the aluminum supports.
In any case ask lots of questions and make sure the company stands behind their work.