Cracked Toilet Woes Step-by-Step Guide to Assessment and Repair

Cracked Toilet Woes: Step-by-Step Guide to Assessment and Repair


A cracked toilet can quickly turn your bathroom oasis into a nightmare. Not only can it lead to water wastage and inflated bills, but it can also damage your flooring and subfloor if left unaddressed. In this comprehensive guide, we will walk you through the step-by-step process of assessing and repairing a cracked toilet. By following these instructions carefully, you can save time, money, and stress, and restore peace to your bathroom.

Step 1: Gather Your Tools and Materials

Before you start the repair process, gather the necessary tools and materials. You will need:

  1. Adjustable wrench
  2. Screwdriver
  3. Toilet repair kit
  4. Toilet sealant
  5. Rubber gloves
  6. Safety goggles
  7. Old towels or rags
  8. Bucket

Step 2: Turn Off the Water Supply

Locate the shut-off valve behind the toilet and turn it clockwise to shut off the water supply. Flush the toilet to drain the remaining water in the tank and bowl. Use towels or rags to soak up any excess water.

Step 3: Remove the Toilet Tank

Start by disconnecting the water supply line from the bottom of the toilet tank using an adjustable wrench. Next, remove the bolts securing the tank to the bowl. Carefully lift the tank off and place it in a safe location.

Step 4: Inspect the Toilet Bowl

Examine the toilet bowl thoroughly to locate the crack. Cracks can occur on the inside or outside of the bowl. If the crack is small and on the inside, you might be able to repair it. If it’s significant or on the outside, you may need to replace the entire toilet bowl.

Step 5: Repairing Small Cracks

For small cracks on the inside of the bowl, you can use a toilet repair kit. Clean the cracked area and follow the kit instructions to apply the sealant or epoxy. Allow it to dry completely before proceeding to the next step.

Step 6: Replace the Wax Ring

Whether you repaired the crack or not, it’s advisable to replace the wax ring to ensure a proper seal between the toilet bowl and the floor. Remove the old wax ring and clean the flange thoroughly. Place the new wax ring in position, ensuring it is centered on the flange.

Step 7: Reinstall the Toilet

Carefully lower the toilet bowl onto the flange, ensuring the bolts pass through the mounting holes. Press down firmly to set the toilet in place. Tighten the nuts onto the bolts, but be cautious not to overtighten and crack the bowl. Reconnect the water supply line to the bottom of the tank.

Step 8: Reattach the Toilet Tank

Place the tank back onto the bowl and secure it with bolts. Reconnect the water supply line to the bottom of the tank. Tighten the connections, ensuring there are no leaks. Turn on the water supply and allow the tank to fill. Flush the toilet to check for any leaks around the base and connections.

Step 9: Test the Toilet

Flush the toilet multiple times to ensure there are no leaks and that the crack, if repaired, remains sealed. Check the area around the toilet for any signs of water seepage. If everything appears dry and functional, your repair is successful.


Dealing with a cracked toilet may seem daunting, but with the right tools, materials, and a systematic approach, you can assess the damage and carry out the necessary repairs. Remember, safety is paramount, so always wear protective gear and work in a well-ventilated area. By following this step-by-step guide, you can restore your toilet to its former glory and maintain a leak-free, functional bathroom for years to come.