How to Install Single-Handle Shower Controls

Turn off the water at the main water supply valve. Turn on the water at the shower fixture to drain the water supply line.

Wipe around the shower fixture and the wall with a clean, dry rag to remove any moisture. The area should be dry to properly install the single-handle shower control.

Apply silicone sealant on the gasket on the backing plate. The gasket is on the back of the plate. The sealant will create a waterproof seal.

Attach the plate to the shower wall, around the shower valve. The plate has a hole in the center and the shower valve will be in the center of the hole. Press the plate firmly to the shower wall to allow the sealant to stick.

Insert the long screws through the screw holes on the plate attached to the shower wall. The manufacturer of the single-handle shower control typically includes the screws with the assembly. Screw in each screw using a Phillips-head screwdriver.

Put the stem adapter over the valve. The stem adapter attaches to the valve and controls the shower handle.

Attach the faceplate to the plate on the shower wall.

Fit the shower handle onto the stem adapter. Use a cotton rag to screw on the handle, so you don’t scratch the surface of the faceplate or handle.

Turn the water on at the main water supply.