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How to Install a Toilet – Easy Step By Step Instructions

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You might be thinking that installing a toilet is better left to professionals. But the reality is otherwise. If you want to do this yourself, this guide will help you know if it’s possible and what you have to go through for a good job.

Can I Install a Toilet Myself?

Yes, you can surely install a toilet yourself if you have 4-6 hours to spare, know some stuff about basic tools, and don’t mind a bit of heavy lifting.

However, keep in mind that if you do this the wrong way, be ready to experience leaks, wobbling, or, worse, costly water damage. The key is to go slow and double-check your work.

What are the Parts of a Toilet Called?

Before jumping in, you need to know the parts in a toilet. Once you do, it’s easier for you to see how they all come together:

  • Toilet Bowl: The lower, main part where all the action happens.
  • Toilet Tank: It’s the top part that holds water for flushing.
  • Wax Ring: That’s the seal that stops leaks between the toilet and the drain pipe.
  • Closet Bolts: These bolts hitch the toilet to the floor.
  • Flush Mechanism: Consists of the handle, flapper, and fill valve inside the tank.
  • Supply Line: Attach your toilet to the water supply.

Toilets to Choose From

Here are some common options when choosing a toilet to install:

1. Two-Piece 

These are the most common. Both the tank and the bowl are separate pieces that you’ll attach during installation. They’re affordable and easy to handle.

2. One-Piece 

The tank and bowl are combined into one unit. They’re sleeker and easier to clean but tend to be heavier and more expensive.

3. Wall-Mounted

Perfect for a modern look, these save floor space but require special mounting hardware and plumbing adjustments.

4. Dual Flush 

They are eco-friendly and have two flush options to save water.

Pick one that suits your bathroom’s style, budget, and space.

Preparing for Installation (Tools and Materials Needed)

Gathering everything beforehand saves time and frustration. Here’s what you’ll need:

Tools:

  • Adjustable wrench
  • Screwdriver
  • Tape measure
  • Level
  • Putty knife
  • Plunger or small bucket (for old toilet removal)

Materials:

  • New toilet (bowl, tank, and all included parts)
  • Wax ring
  • Closet flange
  • Toilet bolts
  • Supply line (if replacing)
  • Plumber’s putty or silicone caulk

Replacing an Old Toilet

If you’re swapping out an old toilet, start here:

  1. Turn Off the Water: Locate the shutoff valve near the toilet and close it. Flush to drain the tank and bowl.
  2. Disconnect the Supply Line: Use an adjustable wrench to unscrew it. Have a bucket handy for any remaining water.
  3. Remove the Bolts: Pry off bolt caps at the base, then unscrew the bolts, securing the toilet to the floor.
  4. Lift and Remove: Rock the toilet gently back and forth to break the seal, and then lift it off. It’s heavy, so you may need a helper.
  5. Clean the Area: Scrape off the old wax ring and inspect the flange. Replace it if damaged.

Preparing the Bathroom Floor

A solid base is very important for successful toilet installation. Let’s prep the floor.

Inspecting the Subfloor

Check the subfloor and look for signs of damage, like rot or soft spots. Repair or replace any compromised sections before proceeding.

Installing the Closet Flange

The flange connects your toilet to the drain pipe. If the existing one is damaged or improperly positioned:

  1. Remove the old flange.
  2. Align the new flange with the drainpipe.
  3. Secure it with screws to the floor but make sure it sits are the right level and right height.

Installing the New Toilet

Now, the fun part—installing your shiny new toilet. Here’s where it all comes together!

Placing the Wax Ring

Warm up the wax ring slightly in your hands, then press it onto the underside of the toilet bowl’s outlet. This creates a watertight seal.

Positioning and Securing the Bowl

Now lower the toilet bowl over the flange with care, aligning the bolts. Rock it gently to compress the wax ring, then tighten the bolts with the provided washers and nuts. Avoid overtightening to prevent cracks.

Attaching the Toilet Tank

If you’re installing a two-piece toilet, attach the tank to the bowl now. Use the included bolts and rubber washers to prevent leaks. Tighten until snug, but do it gently to avoid cracking the porcelain.

Connecting Tank to Bowl

Double-check that all connections are secure and that the tank sits evenly on the bowl. Adjust bolts as needed.

Installing the Flush Mechanism

If your toilet didn’t come pre-assembled, follow the manufacturer’s instructions to install the fill valve, flapper, and handle in the tank.

Connecting the Supply Line

Next, connect the supply line to the shut-off valve and tank inlet using the plumber’s tape. Then, snug tight it with an adjustable wrench, but don’t overtighten.

Doing Final Leak Tests

Turn the water back on and flush the toilet a few times to check for leaks around the base, tank, and supply line.

Final Finishes and Touches

Install bolt caps at the base, caulk around the toilet base (optional), and give everything a final wipe-down. Admire your work—you’ve earned it!

Tips for Maintaining Your Newly Installed Toilet

  1. Check for leaks regularly: A quick glance under the tank and at the base for minor leaks can save you trouble later.
  2. Clean with Non-Abrasive Products: Harsh chemicals can damage toilet seals and surfaces.
  3. Avoid Overloading: Use only toilet paper, and don’t use the toilet as a trash can for items like wipes or feminine hygiene products.
  4. Inspect the Wax Ring: If you notice a wobble, it might need reseating.
  5. Flush with Care: Regularly check the flush mechanism to make sure everything is working fine.
  6. Clean Regularly: Prevent stains and buildup by cleaning weekly.
  7. Replace Components: Fix running toilets by replacing flappers or fill valves as needed.

Conclusion

If you’re up for it, installing a toilet yourself can save you a few bucks. While this guide simplifies the process, some steps can be tricky. If you’re unsure or find it overwhelming, California Coast Plumbers can help. Their skilled plumbers ensure a flawless installation that saves you time and effort. Call us today for professional assistance!