Thursday, February 24, 2005


This is something to avoid. The copper (in red and blue) are placed just right for a 4" concrete wall. They will be right in line with the foam but the vent stack should be located in a frame wall in another location. If this is not avoidable, then we would simply cut the stack off at the drain point, cut the ICF foam and reinforce that area for concrete, then after concrete is placed, use an electric chainsaw to remove a wide strip of foam so that the pipe may be set in place of the foam all the way up the wall. This is better than allowing the pipe to fall within the concrete cavity, especially when the wall is only a 4" wall. Posted by Hello