A Guide to Installing a New Toilet: Expert Tips

Contact Done Right Plumbing today for all your plumbing needs!
Installation of new toilets

Installing a new toilet is a significant upgrade that can enhance both the functionality and aesthetics of your bathroom. Whether you’re remodelling your space or simply upgrading to a more water-efficient model, proper installation is crucial to ensure the longevity and performance of your new fixture. In this article, your trusted plumbers will provide you with a step-by-step guide to successfully installing a new toilet, ensuring a smooth and hassle-free process.

Step 1: Gather the Necessary Tools and Materials

Before you begin, make sure you have all the tools and materials you’ll need for the installation:

  • New toilet (bowl and tank)
  • Wax ring or wax-free gasket
  • Closet bolts
  • Adjustable wrench
  • Screwdriver
  • Level
  • Hacksaw (for cutting bolts if needed)
  • Caulking gun and silicone caulk
  • Towels and rags

Step 2: Remove the Old Toilet

Turn off the water supply to the existing toilet and flush it to empty the tank and bowl. Use a wrench to disconnect the water supply line from the shut-off valve. Remove the nuts from the closet bolts securing the toilet to the floor. Carefully lift the old toilet off the closet flange and place it on a towel to prevent any water or sewage from spilling.

Step 3: Prepare the Area and Closet Flange

Clean the area around the closet flange to ensure a clean and secure seal for the new toilet. Inspect the closet flange to ensure it is level and in good condition. If the closet flange is damaged or not at the correct height, it may need to be replaced or adjusted.

Step 4: Install the Wax Ring or Gasket

Place the wax ring or wax-free gasket onto the closet flange, ensuring it is centred over the opening. Some gaskets have a built-in rubber funnel that should be facing up. The wax ring will create a watertight seal between the toilet and the drainpipe.

Step 5: Install the New Toilet

Carefully lower the new toilet bowl onto the wax ring or gasket, aligning the mounting bolts with the holes in the base of the toilet. Press down firmly to compress the wax ring and create a secure seal. Once the bowl is in place, install the washers and nuts onto the closet bolts and tighten them evenly. Use a level to ensure the toilet is sitting level and adjust the position if necessary.

Step 6: Attach the Tank

If your toilet has a separate tank, follow the manufacturer’s instructions to attach it securely to the bowl. Connect the water supply line to the fill valve on the bottom of the tank and tighten the nut.

Step 7: Test and Caulk

Turn on the water supply and allow the tank to fill. Flush the toilet and check for any leaks around the base and connections. If everything is functioning properly, apply a thin bead of silicone caulk around the base of the toilet to create a watertight seal and improve aesthetics.


Installing a new toilet can be a rewarding DIY project that instantly transforms your bathroom. However, if you’re unsure about any step of the process or encounter unexpected challenges, it’s always wise to seek the assistance of a professional plumber. At Done Right Plumbing, we have the expertise and experience to ensure a successful and hassle-free toilet installation, leaving you with a comfortable and efficient bathroom fixture for years to come.

Get A Quote Now

Contact Done Right Plumbing Melbourne now to get your plumbing problem fixed.