Opinions on This Basement Floor Assembly
I have an old cabin with an unfinished basement that I would like to finish. It is basically a 3 season cabin up north, Zone 7a with no heat except a pellet stove and fireplace. The is no insulation under the floor, and the basement is normally dry, but it is on the bottom of a hill, so in the spring with the snow run off, there is a bit of water that comes in between the floor and the walls, and runs toward the sump pit. Lots of clay in the soil so I think it is just a matter of it not being able to move under the floor to the sump pit fast enough, and that is why it leaks in.
I was thinking of putting down delta fl as a vapour barrier and to give the water a channel to travel across the floor. Then 1 1/2″ rigid foam on top. T&G OSB on top of that and finally vinyl plank. Now my question is, Do I need to use 2×4 sleepers and place foam sheets between them? or can I use continuous foam across the floor with just the OSB? I have also seen some people recommend 1×3 strapping across the top of the foam with the osb on that. Basically I am worried that the water heater and pellet stove would compress the foam too much. Other than that the area will just be a games room, with chairs and couches. So nothing else will be heavy enough to cause concern. Or any better ideas? Thanks in advance.
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