Does my ICF foundation require additional protection or barriers applied before backfill?
In my case the house is located in southwest Colorado at 6900′ elev. on a sunny south slope. The soil is moderately expansive clay so the foundation is 48″ on top of the footer on top of 12″ compacted structural fill. Footer perimeter drain ( smooth pipe in gravel bedding) all around, ground will slope 1:10 away from foundation to a french drain system, and ground gutters or sub-grade pond liner will be installed on the north side to keep bulk water away from the foundation, so good drainage and water control. I’m not sure that free drainiing back fill or a drainage layer is appropriate in this case and that compacted clay backfill would be better to seal water out. It also doesn’t make sense to me to apply peel and stick bituminous sheet because it would inhibit the vapor permeance of the ICF. Also important to note is that this area is low termite infestation. So my question is – can I just drape a WRB layer of house wrap like Tyvek over the entire foundation wall inside and out and the backfill it or would the Tyvek deteriorate in the ground?
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