Turn off the water supply to the toilet
Flush the toilet to empty the tank and bowl
Sponge out any remaining water
Disconnect the water supply line from the tank
Remove the toilet bolts and lift the toilet off the flange
Set the toilet aside on a protected surface
Scrape away old wax and debris from the flange area
Inspect the subfloor and flange for damage
Remove the old flange if it is broken or corroded
Clean the pipe opening and surrounding floor
Dry-fit the new flange to confirm proper size and alignment
Position the new flange over the drain pipe
Secure the new flange to the floor with screws
Use flange repair parts or spacers if needed for height
Install a new wax ring or wax-free seal on the flange or toilet
Lower the toilet straight down onto the flange
Press the toilet evenly to seat it properly
Reinstall and tighten the toilet bolts evenly
Reconnect the water supply line
Turn the water supply back on
Flush the toilet and check for leaks
Caulk around the toilet base if desired, leaving the back open