We have a sunbrella roof on our birdcage. Installed 6 yrs ago. Expensive but never a problem of any kind. Some water (mist) through in heavier rain. Appears to be very small stretch holes appearing near attachment points and we are having it checked this week. These are mounted on aluminum frames attached to BC members . -o- wind damage in 6+ years. I do believe that in a very strong wind event , damage to BC would occur. Only my Opinion and personal experience.
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"All that is necessary for the triumph of evil is that good men do nothing" Edmund Burke 1729-1797
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