Basement slab details – where does insulation and poly go when you have lally columns?
We’re pouring a new foundation under our 1850s farmhouse in Vermont. Before pouring the slab, we’ll be installing 5″ of EPS and 15 mil poly (Stego wrap). However, because this is an existing house and we’re not redoing all the support beams in the basement ceiling, we’ll have at least six lally columns in the basement. We need to build footers for the lally columns. My GC would like to skip the insulation and poly at the footer locations. This seems like a lot of area not to have insulation and poly. What should I do with the insulation and poly at the lally column footers?
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