Utilities entering from the outside of the wall are typically placed through the ICF/concrete wall assembly through sleeves. Sleeves may be PVC, aluminum or steel piping that is strong enough to withstand concrete placement. A neat hole is cut through both the exterior and the interior ICF panels allowing for a snug fit for the sleeve. The penetrations are then sealed so that they are air tight and water tight. Plumbing and conduit, electrical boxes and receptacles are embedded directly into the foam before wall coverings are applied. Any number of cutting tools including a hot wire knife or even a small chain saw can be used to create openings in the foam to lay piping or cabling. A CELBLOX® exterior envelope can be constructed in ½ to ⅔ the time it takes to assemble wood frame wall assemblies.