By way of thanks I offer pictures of this crazy job. I ended up having to run a hose into my house to soak the dryset quickerete. I don't care what anyone says I'm not mixing cement in my house. The whole slab is supported on top of 2" floor insulation on top of a leveled bed of crusher dust.
Addition photos in comments

5 Comments
finitebanjo@piefed.world · 11 pts · 278d
TheJesusaurus@sh.itjust.works · 2 pts · 278d
Young kids and I need the space for stuff other than storing potatoes unfortunately.
The floor changes nothing though, and it's a billion times better now. Nothing stopping me in future ripping all the insulation out. Venting it to the outside again
finitebanjo@piefed.world · 5 pts · 278d
Onomatopoeia@lemmy.cafe · 3 pts · 278d
Neat approach to dealing with the clean out.
Glad you went with concrete, it really is the best answer. Even if it was imperfect, it's would still be better than wood, since it's not structural.
semisimian@startrek.website · 3 pts · 278d
Good work, thanks for the follow up!
TheJesusaurus@sh.itjust.works · 2 pts · 278d
TheJesusaurus@sh.itjust.works · 2 pts · 278d