What do you recommend for water proofing? I had intended on just painting the interior flat white (kilz primer, its a sealant too) and having a catch tray on the bottom (really just a lid to a tote). I also planned on caulking up the seams as well, but was thinking more on the lines of drafts and light.
For the door seal, I was just planning on old school foam weather seal. I’ll look into the inner tube seal too. I’ll attach a board to the back of one of the doors to be able to seal the mid seam and latches at the bottom to keep everything shut.
Gotta figure out a light trap for the intake and possibly the out as well, depending on how light proof 4in ducting is.