Hey, I’ve got a cold room in my place that is concrete on all sides, I’m going to be framing it in and insulating and I don’t really need any help there unless there’s anything cold room specific I should know, however.
As you can see I have a floor that appears to be a stepped concrete pit, filled with quite a lot of dirt, and what I believe is probably a tie in to the sewage drain.
Can I just get rid of the dirt? The whole room spells like petrichor because of it.
Assuming the pit continues to step down, can I just build the floor over it regardless, and do I need to support the pipe in some way if the dirt is removed?
Or, if I’m completely off base please let me know what I should be doing.
Thanks
Where are you building? I’m assuming this is the basement or the ground floor. What is the rest of the subfloor on that level?
Wood resting on dirt is a big no, so that is an obvious red flag. Whatever floor you put in, I’d preserve your access to that clean out. Once you answer my Qs above, I can help give you a recommendation.
Basement yep. The rest of the basement subfloor is poured concrete. Other than this cold room the basement design seems to be very typical poured concrete foundation dug under grade, typical of eastern Canada.
I’d remove the existing wood, grade the soil flat and compact it. I’d then put down 2 in foam board (like in the link above) to decouple the flooring from the Earth. I would pour concrete to match the subfloor in the rest of the basement, but you don’t have to. You can go back with a pressure treated subfloor product on top of the foam, etc.
A few things to keep in mind would be making sure that you get the right height of the soil so that you have the finished flooring height you desire. Also, all this work assumes you are maintaining access to that clean out. Good luck.
Thanks for this! Whatever happens I’m fairly certain I’ll need this eventually
Random reader here. What’s a clean out?
He’s referring to the capped pipe in the centre of the room. I’m not entirely certain either
It’s a septic or sewer clean out. Code requires them at certain distances of the drain system to allow for access to clear any blockages. You can use that access to run a snake.
It’ll save your ass from a big bill if your kids flush something they shouldn’t vs calling a plumber.
That’s very good to know
Like who the hell built that with wood right on dirt?
That took more effort than just finishing that area with concrete like the rest of the floor.
Sometimes I just don’t get how builders think.
Sorry, are you saying the room is unfortunately cold, or that is a room meant to be cold like a larder or something?
I realize now that wasn’t clear, it is a “cold room” by design. Its not insulated with the rest of the house. The door on the room was heavily insulated and it was vented to the outside to maintain an outside temp
Neat! I’ve not heard of a cold room before, but it sounded like it might exist.
I would dig it down a bit, put in some fresh gravel base and put foam panels over the top. Install a subfloor directly over the foam and flooring on that, with an access panel for the clean out.
As in backfill with gravel. Level it, and start building the subfloor right off the gravel? (On top of the foam board. Which would be floating then?)
Yeah basically this but where the concrete slab is shown, install whatever flooring system you want. All though I will say a concrete slab will last the longest.
Thanks
