Replacing a Toilet? Here’s How.
To ensure your new floor-mount toilet fits your space, determine the rough-in measurement. This is the distance between the floor drain and the wall. While the most common rough-in is 12 inches, some houses may have 10 and 14 inch rough-ins. Determine the rough-in by measuring from the wall behind the toilet to the middle of the bolts on the base.
Step 1. Clear the area and turn off the water supply.
Step 2. Remove water from the tank and bowl.
Step 3. Disconnect the water supply line.
Step 4. Remove the floor bolts. Rock the toilet back and forth to break the wax seal, and lift it out of the way. (For a two-piece toilet, remove the tank and then the bowl.)
Step 5. Prepare the floor and toilet flange for the new one. Scrape the old wax ring from the flange with a putty knife. Plug the floor drain with a rag to prevent emission of sewer gases.
Step 6. Place the toilet upside down. Install a new wax ring on the toilet and new flange bolts on the drain.
Step 7. Remove the rag from the drainage hole. Lower the toilet over the anchor bolts. Rock it back and forth to press the wax ring in place. Attach the nuts to the bolts.
NOTE: Tighten the bolts gradually, alternating sides. Avoid overtightening the bolts as it can cause cracking.
Step 8. For a two-piece toilet, install the gasket on the tank and mount the tank to the bowl. Slide the bolts into the holes and tighten the nuts underneath.
Step 9. Reattach the supply line and turn the water back on. Flush several times to check for leaks and tighten connections if necessary.
Step 10. Install bolt caps and toilet seat and you’re done!