A low toilet flange can cause various plumbing issues, including leaks and improper waste drainage. Raising the toilet flange is a crucial task that ensures a proper and secure fit for your toilet. In this blog, we will provide a step-by-step guide on how to raise a low toilet flange, helping you prevent potential problems and maintain the functionality of your bathroom.

1. Gather the Necessary Tools and Materials

Before starting the process, gather the required tools and materials. You’ll need a wax ring, a toilet flange extender kit, a hacksaw or reciprocating saw, a screwdriver, a measuring tape, and a putty knife.

2. Turn Off the Water Supply

Locate the water shut-off valve near the toilet and turn off the water supply. Flush the toilet to empty the tank and bowl.

3. Remove the Toilet

Use a putty knife to remove the caulk or wax around the base of the toilet. Loosen the bolts securing the toilet to the floor and lift the toilet carefully, placing it on old towels or newspapers to avoid water spillage.

4. Inspect the Flange Height

Inspect the existing flange to determine how much it needs to be raised. A low flange may require an extension ring or an entire replacement with a taller flange.

5. Install the Flange Extender Kit

If your flange only requires a slight raise, use a flange extender kit. Follow the manufacturer’s instructions to attach the extender on top of the existing flange, ensuring a secure fit.

6. Replace the Wax Ring

Place a new wax ring on the raised flange or flange extender. The wax ring creates a watertight seal between the toilet and the flange.

7. Reinstall the Toilet

Carefully lower the toilet onto the wax ring and align it with the flange bolts. Press down firmly to compress the wax ring and create a secure seal.

8. Reattach the Toilet

Reattach the nuts and washers to the flange bolts and tighten them securely. Be cautious not to overtighten, as it may crack the toilet base.

9. Turn On the Water Supply and Test

Turn on the water supply and allow the tank to fill. Flush the toilet several times to ensure there are no leaks or issues with the raised flange.


Raising a low toilet flange is a manageable task that can prevent potential plumbing problems and ensure the proper functioning of your toilet. By following this step-by-step guide and using the right tools and materials, you can successfully raise the flange and have a leak-free and efficient bathroom.