ICF Construction in 25 Steps Lessons Step 24: Plumbing

Step 24: Plumbing

Plumbing is integrated into an ICF wall by creating snug chases in the foam and spot gluing using foam adhesive to secure pipes in place. Before cutting, mark the route of the pipe on the ICF wall. Pipes larger than one-inch will impact a web when running horizontally. It is much easier to cut one web versus portions of two webs. Keep in mind that it isn’t possible to install pipes with an outside diameter exceeding 2 ½ inches due to the thickness of the foam. For larger pipe runs, such as those for a water closet vent, ensure those are located on an inside framed cavity wall or fur and frame out a wall to provide the necessary depth.

BuildBlock does not recommend running plumbing inside the concrete wall cavity unless absolutely necessary. Placing a pipe in the wall and pouring concrete around it reduces the structural integrity of the wall and increases the possibility of consolidation issues or voids. Additionally, if a pipe is placed inside the concrete and the pipe fails it is inaccessible.

If plumbing must be placed inside the wall cavity, extra vibration is required to ensure proper consolidation around the pipe. For project specific questions or concerns consult codes or engineer’s specifications.

Step 24: Plumbing is installed in much the same way as electrical wire. Chases are cut into the interior foam and pipes can be placed inside.
Step 24: Plumbing is installed in much the same way as electrical. Chases are cut into the interior foam surface and pipes can be placed inside.