Step 5 · Prepare for New Valve Installation
Consult the new valve's instructions for the correct installation depth. This is crucial and is measured from the front of the valve to the face of the finished wall (tile or shower surround). Install a new piece of 2x4 lumber horizontally between the wall studs to serve as a secure mounting bracket for the new valve. Measure and cut the existing pipes as needed to align with the new valve's ports. Clean the outside of all pipe ends and the inside of your new fittings using a pipe cleaning brush and sand cloth until they are shiny and free of oxidation.