Wow, sorry to hear about the pipes! That has got to be a lot of work! That's a terrible fear with this freezing weather!
Your brooder sounds really good. Nice size too, not much bigger than a coffee table! Perfect! Isn't it nice to watch the birds right there in the living room? So convenient!
We bought a saw and are debating what type of "house" to make. We have thought of a multistory mall style to go up a wall. Something suitable for inside but are considering cleaning issues too. Like one of those hamster habitats but larger for chickens. We even considered getting them an exercise wheel.
I've been thinking on this "dust" concern. OK I wasn't going to say this on here, don't want people to think I don't know what I'm doing, so don't laugh. My dyson vacuum is way too strong to vacuum the birds, but was thinking that maybe I could get a small, less powerful vacuum with a gentle brush attachment to vacuum them. They are used to the vacuum and don't fuss around it at all at this point. Maybe this could resolve their dust or dandruff problems if they arise. Just don't want to wrinkle a feather. So far at 3 1/2 weeks we have no dust from the 3.