Toilet Leaking Through Ceiling and How to Fix It

Remove Caps

Pry off the caps that cover the tee bolts that hold the toilet in place and try tightening them if they spin or are stuck; they will need replacement. With an adjustable wrench, remove the tee bolts.

Place Bowl on Side

Carefully lift the toilet keeping it parallel to the floor and place it on its side. The wax ring stays compressed, and an irregular groove will cause the leak. Do not put the toilet directly on the floor rather use old cardboard or blanket.

Clean Wax Ring

While wearing a pair of disposable gloves, scrape off the old wax ring from the base of the toilet bowl and the anchorage flange on the floor. Clean of any remaining wax ring with a rag dipped in mineral spirits. Ensure to cover the sewer drain with rags to prevent foul smells from entering your house from the septic tank.

Install Replacement Wax Ring

Press the new wax ring into place, which is the raised ring at the bottom of the toilet bowl, being careful not to press it out of shape. Lift the toilet and put it directly onto the drainpipe ensuring the tee bolts go through the holes on the base of the bowl. Wiggle the toilet from left to right to make sure that the wax ring forms a watertight seal. Attach the washers and nuts and tighten them to hold the toilet in place without movement on either side.

Attach Water Supply

Replace the caps and attach the water supply. Flush the toilet and if there are no leaks, apply caulk to the base of the toilet where it meets the floor.

After the repair of the leak, apply a new coat of paint on the ceiling directly below the toilet. It will be unwise to leave the wet spot as it were.