Waterproofing foundations follow the same materials and procedures, no matter if you're doing an ICF house, poured concrete or a block foundation. In this video, Matt Risinger, master builder, takes us to an ICF home and the exterior of the wall is an ETF surface that will have to be adhered to. That means you cannot use solvent-based products that would eat into the ETF and dissolve it. Risinger recommends the use of the Poly-Wall home stretch system. Everything they make is fully compatible with ETF. The product is peel-and-stick, 40 mils thick and it comes in a roll yielding over 200' of product. Installation begins with a wide concrete footer and on top of that will be the ICF walls. The joint between the footer and the foundation wall is critical. Start with PolyWall Blue Barrier fluid joint filler. That is applied between the wall and the footer as well as for any other penetrations. Next is a water-based primer application rolled onto all sides of the footer and up 6" to 8" on the wall and add a detail strip of the Poly-Wall. Roll the primer onto the main body of the wall and once up, you'll need to wait to have it set - probably an hour or so, depending on humidity. Overlap each section by 3" to 4". Pull the release paper slowly and make sure the critical joint at the bottom is sealed. Adding a termination bar locks in the waterproofing and seal the top of the bar with the Blue Barrier fluid. The whole system should not be exposed for more than 30 days.This process should give you waterproofing for the life of the building