Up next in Bathroom Repair (13 videos)
Learn how to fix many bathroom plumbing problems yourself with the step-by-step instructions in this Howcast video series about bathroom repair.
You Will Need
- Adjustable wrench
- Replacement supply line
- Utility knife
- Putty knife
- Replacement wax ring
- Braided stainless steel supply line (optional)
- Mineral spirits (optional)
Soak up existing water
Soak up standing water around the toilet with a towel. Wait half an hour to determine whether the water is coming from beneath the toilet or from the water supply line on the bottom of your toilet tank.
Remove old supply line
Replace the supply line if the water is leaking from your existing supply line. Turn the water off by closing the shutoff valve and flush the toilet to remove most of the water. Use a wrench to disconnect the hex nuts that connect the old supply line to the shutoff valve and to the toilet tank.
Install new supply line
Attach the wide, conical end of a plastic replacement supply line into the shutoff valve and replace the hex nut. Then slide the brass compression nut over the tube, with the open end facing the toilet tank, followed by the plastic compression ring, tapered side up. Use your utility knife to cut the line to size and reattach the nut to the toilet tank, tightening it with your wrench.
Remove hex nuts
Replace your wax ring if the leak is coming from under the toilet's base. Turn off the water supply and flush the toilet to get rid of most of the water. Then remove the hex nuts from either side of the base.
Remove the old wax ring
Lift the toilet free of the closet bolts, turn it over, and use the putty knife to scrape away the old wax ring. Make sure you scrape any residual wax from the flange, too.
Attach the new wax ring
Firmly press the new wax ring either onto the flange in the floor or onto the base of the toilet. Then place the toilet back onto the closet bolts, replace and hand-tighten the hex nuts, and sit on the toilet (with the lid closed, of course). Rock back and forth to spread the wax and close the seal. Finally, tighten the nuts with a wrench, being careful not to use too much torque and crack your toilet. Now your bathroom is leak free.