Step 4 · Install New Flange
Select a new PVC toilet flange that is designed to fit over the outside of your 3-inch or 4-inch drain pipe. First, perform a 'dry fit' by placing the new flange over the pipe to ensure its base sits level and flush with the finished tile floor. The top of the flange should be no more than 1/4 inch above the floor. Once you confirm the fit, apply a liberal coat of purple PVC primer to the outside of the drain pipe and the inside socket of the new flange. Immediately follow this by applying a generous layer of PVC cement over the primed areas. Firmly press the flange down onto the pipe, giving it a slight quarter-turn twist to spread the cement evenly. Ensure the closet bolt slots are positioned correctly (parallel to the back wall). Finally, secure the flange to the subfloor by driving corrosion-resistant screws through the provided holes into the solid wood.