Does the walls need to be water proofed?
A. All ICF needs to be covered with something. Any walls below ground should be water proofed. There are many products available from peal and stick membranes to spray on water proofing. If you are in a rocky environment, there is a hard sheet material that goes on after the water proofing and prior to back fill. This protects the integrity of the water proofing during the back fill stage. The walls that will be exposed above ground do not need water proofing or house wrap. They should be covered with siding, masonry, stucco, or any other exterior finish you wish. The main thing is to cover the foam. It will last along time when exposed to the elements, but it will get pretty tough looking.
