How to Install Toilet Plumbing: A Step-by-Step Guide

Installing toilet plumbing may seem daunting, but with the right tools, materials, and guidance, it’s a task that many homeowners in Australia can handle on their own. Whether you’re upgrading an old toilet or fitting a new one during renovations, this comprehensive guide will walk you through the process from start to finish. While this is a DIY-friendly project, it’s important to know your limits—don’t hesitate to call a professional plumber if needed.

Tools and Materials You’ll Need

Before diving into the installation, ensure you have all the necessary tools and materials at hand to make the process as smooth as possible.

Tools:

• Adjustable wrenches
• Screwdriver
• Drill with bits
• Hacksaw (if necessary)
• Tape measure
• Bucket or shallow pan (to catch water)
• Emery cloth (for cleaning pipes)

Materials:

• New toilet (bowl and tank)
• Wax toilet ring
• Closet flange
• Closet bolts
• Shutoff valve
• Stainless-steel water supply line
• PVC pipe and fittings (if needed)
• Silicone caulk (optional for sealing)

Having everything ready will save time and prevent unnecessary trips to the hardware store.

Step-by-Step Installation

1. Turn Off the Water Supply

Start by turning off the water supply to the toilet. Locate the shutoff valve, typically found on the wall or floor behind the toilet, and turn it clockwise to shut off the water. If your toilet doesn’t have a local shutoff, you may need to turn off the main water supply to your home.

2. Remove the Old Toilet (if applicable)

If you’re replacing an old toilet, you’ll need to remove it first.

• Disconnect the water supply line: Use an adjustable wrench to unscrew the line from the toilet tank.
• Unscrew the toilet from the floor: Remove the nuts securing the toilet to the floor, found at the base on either side.
• Remove the toilet: Gently rock the toilet back and forth to break the wax seal, then lift it off and set it aside. Place an old towel over the drain to prevent sewer gases from entering your home.

3. Prepare the Area

Inspect the area where the toilet will be installed.

• Inspect the closet flange: If it’s damaged or corroded, replace it. The flange is crucial for securing the toilet to the floor and ensuring a proper seal.
• Clean the area: Remove any old wax ring residue and clean the flange and surrounding pipes with an emery cloth.

4. Install the Closet Flange (if necessary)

If the closet flange needs replacing:

• Attach the new flange: Glue the new closet flange onto the drainpipe using PVC primer and cement. Ensure it’s level with the floor.
• Secure the flange: Screw the flange tightly to the floor, ensuring it won’t move during the installation.

5. Position the Wax Ring

The wax ring is key to creating a watertight seal.

• Place the wax ring: Centre the new wax ring on the closet flange. If the ring has a plastic horn, align it carefully.

6. Set the Toilet Bowl

Carefully lower the toilet bowl onto the wax ring, aligning the holes in the base of the toilet with the closet bolts protruding from the flange. Press down firmly to compress the wax ring and ensure a tight seal, which is essential for preventing leaks.

7. Secure the Toilet

• Bolt the toilet: Place washers and nuts onto the closet bolts and tighten them alternately with an adjustable wrench. Be careful not to overtighten, as this can crack the porcelain.
• Settle the toilet: Sit on the toilet to help it settle, then re-tighten the nuts if needed.

8. Attach the Toilet Tank

• Install the gasket: Place the rubber gasket on the underside of the tank around the flush valve.
• Position the tank: Lower the tank onto the bowl, aligning the bolt holes.
• Secure the tank: Tighten the bolts to secure the tank to the bowl, ensuring it’s level and stable.

9. Install the Fill Valve and Flush Mechanism

Follow the manufacturer’s instructions to install the fill valve and flush mechanism inside the tank. Attach the flapper chain to the flush lever, ensuring it has the correct tension for smooth operation.

10. Connect the Water Supply

• Attach the water supply line: Connect the stainless-steel water supply line to the fill valve at the base of the tank. The other end connects to the shutoff valve.
• Ensure a leak-free connection: Use plumber’s tape on the threads for a secure fit.

11. Test for Leaks

Turn the water supply back on and allow the tank to fill. Check for leaks around the connections and the base of the toilet. Make sure no water is seeping from the wax seal and that all connections are tight and secure.

12. Seal the Base (Optional)

For a cleaner look and to prevent water from seeping under the toilet, apply silicone caulk around the base of the toilet where it meets the floor. Smooth the caulk with your finger or a caulking tool for a neat finish.

Conclusion

Installing toilet plumbing is a satisfying DIY project that can save you money while upgrading your bathroom. By following these steps and using the correct tools and materials, you can achieve a professional-grade installation. However, if you encounter any issues or feel unsure at any point, don’t hesitate to call a licensed plumber. Proper installation is crucial to avoid leaks and ensure your toilet operates smoothly for years to come.

Need a hand with your plumbing project? Contact Safeway Plumbing today for expert advice and professional installation services. We’ll ensure your new toilet is installed perfectly, so you can enjoy a worry-free bathroom upgrade.

Frequently Asked Questions