How much of a 2 x 6 plate has to be on the stem wall?
The real question is whether to use 6 in or 8 in blocks for my stem wall. Stem wall is 24 in high, this is slab construction.
The wall is metal, membrane, 1.5 in ISO, 5/8 OSB, 6 in plate, 5/8 drywall, trim.
If I use a 6 in block and line the outside of the ISO with the outside of the block, that puts only about 3.5 in of the plate on the block. Will this work? The good part of this system is that the 3 in of styrene on the inside of the stem wall can be let untouched and thereby give me a good thermal break between the floor and the block.
If I use an 8 inch block and line the same, it puts all of the plate on the block, but I have to cut the styrene back so it is not showing in the finished room. Obviously, the puts the cold block almost in the house.
I hesitate to put an inch of styrene on the outside of the stem wall because the critters dig in and destroy it. But, if that is the best, then tell me what to do. Thanks ahead of time. It has been a trip the past few months working on the house.
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