For those wanting to bring their own canopy/shade to your pitch at Treasure Sales, I am delighted to say that, through legal research I have determined that fire ratings are not required for any market canopies except over hot-food vendors. You are therefore now allowed to bring your own shade that is not ULC-S109 rated - although I would recommend the American CPAI84 as a minimum anyway. Of course no sources of ignition should be allowed anywhere near any canopy, that precludes smoking.
I will now be looking to source a handful of canopies suitable for market usage for those without their own.
This does not affect the safety requirement that any shades must have at least 25lbs weight per leg securely affixed.