What Do I Need to Know About Installing a Toilet?

Installing a toilet might seem like a simple task, but there’s more to it than just bolting it to the floor. From preparation to final checks, a successful installation depends on knowing the right steps and avoiding common mistakes.

1. Measure the Rough-In First

Before anything else, measure the distance from the wall behind the toilet to the center of the floor drain (called the rough-in). Most toilets require a 12-inch rough-in, but older homes may differ. This ensures your new toilet fits properly.

2. Inspect the Flange and Floor Condition

A secure toilet starts with a stable foundation. Make sure the flange is in good shape and level. If it's cracked or damaged, replace it before installing the toilet. The subfloor should also be dry and solid.

3. Seal It Right

The wax ring (or rubber gasket alternative) creates a watertight seal between the toilet base and the flange. Aligning the toilet properly when lowering it onto the seal is crucial—never twist or reposition once it's set.

4. Tighten Evenly and Carefully

Use a wrench to tighten the bolts evenly on both sides. Over-tightening can crack the porcelain, while under-tightening can lead to leaks or wobbling.

5. Check for Leaks and Stability

Reconnect the water supply line and flush a few times to check for leaks around the base or tank. If everything’s dry and stable, you’re good to go. Caulking around the base is optional but can give a clean finish and keep dirt out.

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If you're looking for a step-by-step breakdown of the entire installation process, including tips, illustrations, and common pitfalls to avoid, be sure to explore this helpful guide:
? How to Install a Toilet

It’s a detailed resource designed to make DIY toilet installation as smooth and stress-free as possible—even if it’s your first time.