For a "cold room," typically under a porch, use at least 2 inches of XPS tightly sealed. In Ontario, you don't have to provide further coverage. (At least, that's how the inspectors in TO have interpreted the OBC.) This should prevent condensation. You should also use a well sealed exterior door and provide venting. If this is actually a year-round refrigerated room, it's a different story.

Some other random thoughts w/ links to illustrate (I gave up on finding the original links--these are from my Pinterest board, but I think you can find the original links there if you want them) Re: that extra depth in the upper cabinets, and overhead pullouts. Imagine this as a pullout from the side that lets you access the rear 12" or 18" for the upper section of the cabinet (while you still access the front 12" or 6" inches by opening doors). https://www.pinterest.com/pin/302656037428927703/ Similar rear pullout to access back depth (this one is in the knee-hole of a craft desk, but it's the same sort of idea--access the depth by pulling it out to the side. https://www.pinterest.com/pin/302656037432245478/ similar side-access pullouts or drawers: https://www.pinterest.com/pin/302656037428927706/ https://www.pinterest.com/pin/302656037428932903/ This is my favorite overhead pullout for full depth. You pull it out, but you access the shelves from the side. https://www.pinterest.com/pin/302656037434813694/ Other overhead pullouts: These are to the front https://www.pinterest.com/pin/302656037434480577/ These chef's drawers are a neat way to have full access to the depth without having to have a separate bin or basket. https://www.pinterest.com/pin/302656037434591751/ This is an interesting (but elaborate) way to have lots of shallow, accessible storage in a deep cabinet. You lose some of the space, frankly, to the organizing system itself. But it's interesting to think about. You could conceivably use something similar for only a small section. https://www.pinterest.com/pin/302656037434646254/ Here's something to ponder about creating a cabinet on the side. https://www.pinterest.com/pin/302656037434591800/ https://www.pinterest.com/pin/302656037434591784/ If you do want some sort of writing surface, consider something temporary like this pull-out ledge/shelf. That'll keep it from becoming a clutter catcher, but still let you write something now and then. https://www.pinterest.com/pin/302656037429046614/ Back-of-the-door storage. This one w/ a vacuum. It shows using hooks on the wall behind, back-of-door storage as well. https://www.pinterest.com/pin/302656037429046844/ Back-of-door storage look at the hooks on the sides of the door cubbies. This would let you have easy access to the dog leash, extra keys, whatever, and still have substantial bins for other stuff (mittens; those shoes) https://www.pinterest.com/pin/302656037429046869/ This isn't a cabinet at all, but it sort of shows having sideways pullouts, and pullouts of different sizes. https://www.pinterest.com/pin/302656037429213715/ Another sideways-accessed pullout. Not that you're storing cans, but it's a way to have deep cabinets for shallow or small stuff. https://www.pinterest.com/pin/302656037429213913/ Recycling pullouts, on the bottom: See this laundry-basket storage. This is on the front, but you could have one bottom cubby that pulls out from the side. https://www.pinterest.com/pin/302656037429524380/ Tilt-out laundry storage, which could inspired recycling storage, or a basket/bin/bucket for gardening shoes. (could tilt out sideways, or front ways) https://www.pinterest.com/pin/302656037429524386/ Tilt-out on the side, sort of. https://www.pinterest.com/pin/302656037435705334/

Lololol, K!! Isn't that the truth??? I still have a few weeks left to get my trees inside and settled for the season. We did have a low of 47 degrees the other night, but they were all fine. They will start drying and I'll give them the second spraying of the Bayer in another week. Sounds like you are busy with the greenhouses.. ;-) Thought of you the other day.. We have a new Coach store and as I drove past this new store, I thought of you and your wife!! Lolololol!! Looking Great Kawagoe!! Great job!! You do have plenty of room in that setup?? Mmmhmmmm, won't be long... ;-) Have a great evening!! Laura

They didn't want to backfill the porch so they made storage under there. I've seen some places with the same thing use to store firewood to keep it dry or anything else they need to store for quick access. The floor under there is probably a rat slab a few inches thick if that.