Having a loose or rocking toilet can be annoying and compromise the function of your bathroom. Fortunately, fixing a loose toilet is an easy DIY project that usually only requires a few tools and steps. Here is a comprehensive guide on how to diagnose the problem and repair a loose or rocking toilet.
What Causes a Loose Toilet?
There are a few common reasons why a toilet may become loose or rock from side to side:
- The toilet mounting bolts that secure the toilet to the floor have become loose. Over time, the bolts can corrode or the nuts can loosen from repeated use.
- The wax ring seal between the toilet and drain pipe has failed. This ring creates a watertight seal that can weaken or become displaced over time.
- The floor anchors or flange that hold the bolts are damaged or broken. This is more common with tile floors.
- The subfloor underneath the toilet has rotted or is damaged. Pressure from weight or movement can cause the subfloor to weaken.
How to Diagnose the Problem
Start by visually inspecting the exterior base of the toilet for any cracks or damage. Then, see if the toilet rocks – try gently applying pressure from different sides to check for movement.
Next, remove the toilet tank lid and visually inspect the interior – check for any cracks, leaks, or water damage.
Finally, confirm that the floor anchors and mounting bolts are loose. Try tightening the bolts or nuts by hand first before taking further steps.
Significant movement, water damage, or inability to tighten the bolts indicates a bigger problem like a damaged flange or subfloor.
Gather the Necessary Materials
Before starting any repairs, gather the following materials:
- Adjustable wrench or pliers
- Screwdriver
- New toilet mounting bolts, washers, and nuts
- New wax ring seal
- Wood shims
- Grout (if re-setting floor flange)
- Gloves, bucket, and towels
Step-by-Step Instructions
Follow these steps to complete this toilet repair:
Turn off Water Supply and Empty Tank
Start by shutting off the water supply valve located behind the toilet. Flush to empty the tank and use a sponge to remove any remaining water.
Disconnect and Remove Toilet
Use a wrench or pliers to disconnect the flexible water supply line from the fill valve. Remove the mounting nuts and bolts. Rock the bowl gently side-to-side to break the wax seal. Carefully lift the old toilet off the anchor bolts and place it on newspapers or a towel.
Inspect Floor Anchors
Examine the floor flange and anchor bolts for any damage or deterioration. If the flange is loose or broken, it will need to be re-secured or replaced. Scrape off the old wax ring thoroughly.
Install New Wax Ring Seal
Place a new wax ring seal evenly around the toilet drain opening. You may also use a wax ring with a plastic funnel. Ensure the ring is fully seated flat on the floor.
Reposition and Re-Secure Toilet
Place the toilet back over the bolts and drain pipe. Press down firmly to adhere the wax ring while keeping the toilet level. Insert new washers and nuts over the anchor bolts and loosely tighten by hand.
Stabilize and Tighten Bolts
Insert shims between the base of the toilet and the floor to stabilize and prevent rocking. Take time to verify the toilet is level. Then use a wrench to alternately tighten the nuts until secure. Do not overtighten.
Reconnect Water Supply
Attach the flexible supply line back to the fill valve. Turn on the water supply and allow the tank to fill. Check for any leaks. Once full, flush the toilet to verify proper operation.
Clean Up
Remove rags, gloves, and other materials. Apply new caulk around the base if needed. Check for stability by gently rocking the toilet. The repair is complete!
FAQs About Fixing a Loose Toilet
How do I know if my toilet is loose?
Check for visual signs like water damage or cracks. Try rocking or lightly pushing the toilet from side to side. Any noticeable movement or rocking indicates a loose toilet.
What tools do I need to fix a loose toilet?
Basic tools like an adjustable wrench, screwdriver, putty knife, pliers, gloves, and a bucket. You may also need new bolts, wax ring, shims, and caulk. Turn off the water first.
Should I replace the flange if it is damaged?
Yes, it is best to replace a damaged or deteriorated floor flange. This may require temporarily removing the toilet to pry out the old flange and install a new one with anchor bolts.
How do I stop the rocking if shims don’t work?
You can try replacing the worn out mounting bolts and retightening the bolts alternatively. Make sure the nuts are equally tight. Apply extra caulk around the base. In worst cases, the subfloor may need repairs.
How do I calk around the toilet base?
Run a thin bead of tub and tile caulk around the entire toilet base where it meets the floor. Smooth with a finger or caulk tool. Let it fully dry for 24 hours before using the toilet.
Conclusion
A loose, rocking toilet is both a nuisance and a potential hazard. But with the right tools and proper technique, this repair can be completed by most DIYers in just an hour or two. The key steps include turning off the water, removing the toilet, checking the floor mounting, installing a new wax ring seal, re-securing the toilet with bolts and shims, and reconnecting the water. Patience and care is needed when handling the wax seal and alternately tightening the bolts. By following this guide, you can successfully stop your loose toilet from rocking and restore its function.
