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What is the best way to level a softclose toilet during installation?

Dec 26, 2025

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David Smith
David Smith
David is a senior engineer at Shenzhen Landun Environmental Technology Co., Ltd. With over 10 years of experience in water purification technology, he has been deeply involved in the company's R&D projects, contributing to the development of advanced water purification products.

A properly leveled soft-close toilet is crucial for its functionality, longevity, and overall user experience. As a supplier of high-quality soft-close toilets, I've witnessed firsthand the impact of a well-leveled installation. In this blog, I'll share the best way to level a soft-close toilet during installation, ensuring a smooth and hassle-free process.

Understanding the Importance of Leveling

Before diving into the leveling process, it's essential to understand why it matters. A toilet that isn't level can lead to several issues, including:

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  • Uneven Wear: An unlevel toilet can cause uneven pressure on the bowl and tank, leading to premature wear and potential cracks.
  • Leakage: If the toilet isn't level, water may not drain properly, leading to leaks around the base of the toilet.
  • Poor Flushing: An unlevel toilet can affect the flushing performance, causing clogs and inefficient water usage.
  • Discomfort: A wobbly or uneven toilet can be uncomfortable to use and may even pose a safety hazard.

Tools and Materials Needed

To level a soft-close toilet, you'll need the following tools and materials:

  • Level: A spirit level is essential for ensuring the toilet is perfectly horizontal.
  • Adjustable Wrench: You'll need an adjustable wrench to tighten the bolts that secure the toilet to the floor.
  • Shims: Shims are thin pieces of material used to adjust the height of the toilet and level it. You can use plastic or wooden shims.
  • Caulk: Caulk is used to seal the base of the toilet to the floor, preventing water from leaking.
  • Putty Knife: A putty knife is used to apply and smooth the caulk.

Step-by-Step Guide to Leveling a Soft-Close Toilet

Now that you have the necessary tools and materials, let's walk through the step-by-step process of leveling a soft-close toilet:

Step 1: Prepare the Area

  • Turn off the Water Supply: Locate the water supply valve behind the toilet and turn it clockwise to shut off the water.
  • Drain the Tank and Bowl: Flush the toilet to drain as much water as possible from the tank and bowl. Use a sponge or towel to soak up any remaining water.
  • Remove the Toilet Seat: Use a screwdriver to remove the bolts that secure the toilet seat to the bowl. Lift the seat off and set it aside.

Step 2: Remove the Toilet

  • Disconnect the Water Supply Line: Use an adjustable wrench to loosen the nut that connects the water supply line to the bottom of the toilet tank. Once the nut is loose, carefully pull the water supply line away from the tank.
  • Remove the Bolts: Locate the bolts that secure the toilet to the floor. Use an adjustable wrench to loosen the nuts on the bolts. Once the nuts are loose, lift the toilet off the floor and set it aside.

Step 3: Inspect the Floor

  • Check for Damage: Inspect the floor where the toilet will be installed for any damage or unevenness. If there are any cracks or holes, repair them before proceeding.
  • Clean the Floor: Use a vacuum cleaner or broom to remove any dirt, debris, or old caulk from the floor. Make sure the floor is clean and dry before installing the toilet.

Step 4: Install the Wax Ring

  • Place the Wax Ring: Position the wax ring on the flange (the pipe that connects the toilet to the drain) on the floor. Make sure the wax ring is centered on the flange and that it fits snugly.
  • Press the Toilet onto the Wax Ring: Carefully lower the toilet onto the wax ring, aligning the holes in the base of the toilet with the bolts on the floor. Press down firmly on the toilet to compress the wax ring and create a seal.

Step 5: Level the Toilet

  • Use a Level: Place a spirit level on top of the toilet bowl to check if it's level. If the bubble in the level is not centered, the toilet is not level.
  • Adjust the Shims: If the toilet is not level, use shims to adjust the height of the toilet. Place the shims under the base of the toilet where it needs to be raised. Start with thin shims and gradually add more until the toilet is level.
  • Check the Level Again: Once you've added the shims, check the level of the toilet again. Make sure the bubble in the level is centered and that the toilet is perfectly horizontal.

Step 6: Tighten the Bolts

  • Tighten the Nuts: Use an adjustable wrench to tighten the nuts on the bolts that secure the toilet to the floor. Make sure the nuts are tightened evenly, but don't overtighten them, as this can crack the toilet.
  • Check the Level One More Time: After tightening the bolts, check the level of the toilet one more time to make sure it's still level. If the toilet has shifted, adjust the shims again until it's level.

Step 7: Connect the Water Supply Line

  • Reattach the Water Supply Line: Connect the water supply line to the bottom of the toilet tank, tightening the nut with an adjustable wrench. Make sure the connection is tight and that there are no leaks.
  • Turn on the Water Supply: Turn on the water supply valve behind the toilet to allow water to flow into the tank. Check for any leaks around the water supply line and the base of the toilet.

Step 8: Seal the Base of the Toilet

  • Apply Caulk: Use a putty knife to apply a bead of caulk around the base of the toilet, where it meets the floor. Make sure the caulk is evenly applied and that there are no gaps or bubbles.
  • Smooth the Caulk: Use a wet finger or a putty knife to smooth the caulk and create a neat finish. Wipe away any excess caulk with a damp cloth.

Step 9: Reinstall the Toilet Seat

  • Attach the Toilet Seat: Place the toilet seat on the bowl and align the holes in the seat with the bolts on the bowl. Insert the bolts through the holes and tighten the nuts with a screwdriver. Make sure the seat is securely attached and that it doesn't wobble.

Additional Tips for a Successful Installation

  • Read the Manufacturer's Instructions: Before installing the toilet, read the manufacturer's instructions carefully. Make sure you understand all the steps and that you have all the necessary tools and materials.
  • Take Your Time: Installing a toilet can be a time-consuming process, but it's important to take your time and do it right. Rushing through the installation can lead to mistakes and problems down the road.
  • Test the Toilet: Once the toilet is installed, test it by flushing it several times. Make sure the water drains properly and that there are no leaks.
  • Maintain the Toilet: To keep your soft-close toilet in good condition, it's important to maintain it regularly. Clean the toilet bowl and tank regularly, and check for any signs of wear or damage.

Conclusion

Leveling a soft-close toilet during installation is essential for its functionality, longevity, and overall user experience. By following the steps outlined in this blog, you can ensure that your toilet is installed correctly and that it will provide years of reliable service. If you have any questions or need further assistance, please don't hesitate to contact us. We're a leading supplier of high-quality soft-close toilets, including the White Panel Remote Control Toilet Seat, Multi-functional Remote Control Toilet Seat, and U Shape Remote Control Toilet Seat. We're here to help you find the perfect toilet for your needs and to provide you with the support and guidance you need to install it correctly.

References

  • Home Depot. (n.d.). How to Install a Toilet. Retrieved from https://www.homedepot.com/c/ah/how-to-install-a-toilet/9ba683603be9fa5395fab90379a9d87
  • Lowe's. (n.d.). Toilet Installation Guide. Retrieved from https://www.lowes.com/n/how-to/toilet-installation-guide
  • This Old House. (n.d.). How to Install a Toilet. Retrieved from https://www.thisoldhouse.com/plumbing/21014472/how-to-install-a-toilet
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