Hey
The cloth is only going to collect dust if it’s up high - scratch it. Waste of time and money. To prevent excess dust build up you need proper ventilation. That means the dust needs someplace to go. You need low, mid and high ventilation 360’ in the coop while ensuring your birds security from predation. I live in N. MI and he’s right. It’s hard to lose a feathered bird to cold if you block all drafts/wind. If you don’t you and your birds are screwed. According to some (BS) literature, they start dying around (-) 20F (more BYC BS). I get to that temp often and never lose a bird - no wind (thick closed walls). Also no heaters. If you have 10-15 birds they’ll huddle on the roost or low in a corner and be fine. The key to vent ports is to block and redirect wind prudently. That means no cold wind directly on the birds, but air circulation isn’t bad. It’s really common sense. Good luck.
For real.....did you look at the hardware cloth in my pics?
I do a quick sweep with a broom in spring when I have all the windows and door open on the coop. That means the dust that is there took A YEAR to build up.
I have birds in that coop over 10 years old and still going strong.