Greenhouse floor???
New to this sub and I have a very specific question. I live in Midwest zone 5/6 and I am hoping to build a greenhouse this summer in a corner of my house that faces south, with existing house walls surrounding the west and north sides so that the house blocks afternoon sun—not optimal, but the best space I’ve got by far. There is currently an attached screened-in porch there that I would rip out, but the current floor is a level cement pad with no drain. Any recommendations on how to retrofit a drainless, level, impermeable floor for a greenhouse in the most inexpensive way possible? Is there a sloped floor I can add over it maybe? A sloped base and then gravel or pavers? Or is a lack of drain not as much of an issue as I think it will be if I just use saucers under my pots? I intend everything in this greenhouse to only be potted, no large and permanent planters that need to drain onto the floor, but I’m unsure if humidity will drip and pool catastrophically on the floor. Any advice even about other aspects of this build is appreciated!