Walkout basement floor
I have a walkout basement in MN that was never finished. I am finishing it now. I’ve read quite a bit on this site and have questions I’d appreciate help with.
The basement is drain tiled and dry. Three walls are concrete block with 2×2 furring strips nailed to them (installed in 1988 when the house was built). The furring strips couldn’t be removed or built out to the interior, so I concluded that spray foam was my best option. I now have 1-1.5″ of closed cell on the block walls between the furring strips. I also had them spray foam the rim joists and the walkout wall (2×6 construction).
I am trying to figure out what to do with the floor. I am open minded as to the final flooring material – carpet, LVT, and porcelain tile are all options I’ve considered (as are combinations of those). The ceilings are 9.5′ above the concrete slab, so ceiling height isn’t a big concern. However, there is a horizontal green treat 2×2 furring strip that runs along the slab (the rest of the furring strips are standard pine 2×2). Perhaps more significantly, there is a standard service door to exit from the walkout and one other door frame already in place on one interior wall. Putting down foam board with plywood over the top would completely cover the horizontal 2×2 and interfere with the service door and interior door. I could easily re-frame the interior door but the service door frame can’t realistically be changed.
Should I be concerned about the thickness of the floor as it relates to the horizontal furring strip and the doors? How should I accomplish the “step down” to the service door? That is, how should I “trim” the edge of the subfloor for the service door, which swings inward? I could theoretically replace it with a door that swings out, but I can’t see how I’d re-frame the door to install it on top of the new subfloor.
I found a great deal on Amdry LP 3/4″x24″x24″ subfloor panels. They aren’t insulated so we’re talking about an R value of 1.6. But I’m attracted to the 3/4″ thickness and the price (I could do the entire 1,500ft2 basement for about $500) and the idea that I wouldn’t have to drill holes in the slab. With the answers to the previous questions in mind, is there any merit to the Amdry LP product, or am I better off going a different route?
Thank you for your help and advice!
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