1. Know Your Rough-In Measurement
The most critical measurement is the rough-in—the distance from the wall to the center of the drain hole (usually 12 inches). Measure this before purchasing your new toilet to ensure compatibility.
2. Inspect the Toilet Flange
A secure, level flange is key. If the flange is cracked, rusted, or sitting too low, it will need to be repaired or replaced before installation.
3. Choose the Right Seal
Toilets are sealed to the flange using a wax ring or rubber gasket. The seal must be properly placed—once the toilet is set, you should not shift or remove it, or you’ll need to replace the seal.
4. Level the Toilet and Tighten Bolts Carefully
Once the toilet is positioned, tighten the floor bolts evenly and gently to avoid cracking the porcelain. The toilet should be snug and level with no wobble.
5. Connect Water Supply and Test
Attach the water supply line, turn on the valve, and test multiple flushes. Check carefully for leaks at the base and around the supply connection.
Want to dive deeper into each step, including a list of tools, preparation tips, and common mistakes to avoid? Check out this in-depth guide ???? How to Install a Toilet
It’s a complete walkthrough designed to help DIYers do the job right the first time.