We put in alot of foundations of concrete block. We would then parge outside with portland cement with fine sand mix,then after dried, parge black tar for waterproofing when wet stick on rigid insulation, choice was owners. Then french drains and backfill with 2b(#57) approx 1-1/2" top size, stone up to about foot of surface. Worked well for dry and warm basement. Tried to sell poured insulated foundations around here but block was the norm. Insulated poured foundations were quick and very warm but at the time about 30% more than block.
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