Turn off the water supply to the toilet
Flush the toilet to empty the tank and bowl
Sponge out any remaining water from the bowl and tank
Disconnect the water supply line from the toilet
Remove the toilet mounting bolts
Rock the toilet gently to break the wax seal
Lift the toilet straight up and set it aside
Scrape off the old wax ring from the toilet base and flange
Inspect the closet flange for cracks, rust, or damage
Remove any screws or fasteners holding the old flange
Cut away any old caulk or flooring around the flange
Remove the damaged flange from the drain pipe
Clean the pipe opening and surrounding floor
Dry-fit the new flange to confirm proper size and fit
Install the new flange over or inside the drain pipe as required
Align the flange so the bolt slots are positioned correctly
Secure the new flange to the floor with corrosion-resistant screws
Ensure the flange sits level and flush with the finished floor
Install a new wax ring or wax-free seal on the toilet outlet
Lower the toilet carefully onto the new flange and seal
Press the toilet down evenly to seat it properly
Reinstall and tighten the toilet bolts evenly
Reconnect the water supply line
Turn on the water supply and let the tank fill
Flush the toilet and check for leaks
Caulk around the toilet base if desired, leaving the back open
Trim excess bolt length and install bolt caps if needed