I did a DIY epoxy coating on my garage floor. I went with plain light gray because I didn't want to be losing small parts if I dropped them on the floor.
http://www.garagejournal.com/forum/showthread.php?t=284998&highlight=frank001
The heat gain from turning my garage into a greenhouse would be enough to dissuade me from using this type of door.
That and anyone being able to see what is inside.
Being GJ, I can't believe no one has recommended Swissvax, specially formulated for your climate zone!
TRILOGY, Carnauba Wax For USA Climate Zones (78% Vol.)
Sale price $799.00 for 200ml (6.7oz.)
Tax included
https://swissvax.us/collections/autowachs-zum-versiegeln
I've never seen a concrete garage floor that was used for awhile that didn't have oil and fluid stains. Up to you if you're ok with that.
The more important thing to me is that an unfinished concrete floor will continue to 'dust' forever and be a constant maintenance problem.
I refinished my...