I'm thinking ahead of ways to reduce heat in the room I have on the roof. It's one of those demountable things with a roof made from foam with that zinc stuff either side. No one lives in this room, it's more for storage but consistent 45+deg temps for a lot of the year just damages the stuff I store in there.
I've found one that's 'cyclone resistant' and good for winds up to 180km/hr from Australia. Solar powered and will turn itself on when temps hit a certain level, so doesn't only rely on convection or a breeze. Great for those dead still stinking hot days.
I've never seen one in HK and not really sure why? Is there a reason? Can't be for typhoons since there are ones rated for crazy weather, unless I'm missing something?