In this plumbing video blog, we replaced an old toilet and fixed several hidden issues that often get overlooked. We installed a new wax ring, replaced the outdated push shutoff valve, and upgraded the supply line to a safer, serviceable setup. The toilet was reinstalled with new bolts and properly sealed for a clean, long-lasting result. This is how a professional toilet replacement should be done.
Removing the Old Toilet and Inspecting the Flange
After removing the old toilet, the first thing we checked was the toilet flange. In this case, the flange was in good condition – no cracks, no damage, and the height was correct. When the flange is solid, there’s no reason to replace it just for the sake of replacing parts.
Our plumber completely removed the old wax ring and cleaned the area to prepare for a proper seal. Reusing an old wax ring or stacking wax rings is a common mistake and often leads to leaks at the base of the toilet.
Proper Wax Ring Replacement
A new wax ring was installed to create a tight, leak-free seal between the toilet and the flange. This step is critical for preventing water damage and odors.
A failed wax seal can cause:
• leaks under the toilet
• water damage to the subfloor
• unpleasant sewer smells
• long-term structural issues
Even with a new toilet, a bad wax ring will eventually cause problems.
Why the Push-Style Shutoff Valve Had to Be Replaced
While working on the toilet supply, we found an old plastic push-style shutoff valve. These valves are very common in older installations and are known for failing over time.
In this setup, the shutoff valve and the supply line were made as a single piece. That means:
• the supply line cannot be replaced separately
• if the line fails, the entire valve must be replaced
• plastic push valves are less reliable than standard shutoff valves
Leaving this type of valve in place is a risk we don’t recommend.
Installing a New Shutoff Valve and Supply Line
We removed the push-style valve and installed a new, reliable shutoff valve with a separate flexible supply line. This setup is safer, easier to service, and much more durable.
With this configuration, future repairs are simple and don’t require tearing everything apart again. This is the standard approach for professional toilet installations.
Reinstalling the Toilet with New Hardware
Once all plumbing connections were updated, we reinstalled the toilet using:
• new closet bolts
• a new wax ring
• proper alignment and leveling
A toilet that isn’t set correctly can rock, loosen over time, or break the seal. We made sure the toilet was solid and secure before moving forward.
Final Sealing and Clean Finish
After testing everything for leaks, we applied silicone around the base of the toilet. This provides a clean, finished look and adds extra protection against moisture.
Everything was wiped down, tested, and inspected under normal use conditions.
The final result is exactly how it should be: solid, clean, properly sealed, and built to last.
Why These Details Matter
Many toilet replacements focus only on swapping the fixture. But small details like:
• the condition of the wax ring
• the type of shutoff valve
• the supply line setup
• proper sealing
make a big difference in preventing leaks and future repairs. Cutting corners on these parts often leads to costly problems later.
When a Full Toilet Upgrade Makes Sense
You should consider replacing more than just the toilet if:
• the shutoff valve is old or plastic
• the toilet leaks or rocks at the base
• the supply line cannot be replaced separately
• the toilet is already being removed
Doing everything at once usually saves time, money, and stress.
Materials Used in This Toilet Replacement
For this installation, we used proven, reliable plumbing materials that we trust on real jobs.
We installed a BrassCraft 1/4-turn compression angle shutoff valve, which provides a solid, durable connection and makes future servicing much easier compared to old push-style valves.
A new extra-thick toilet wax ring was used to create a proper seal between the toilet and the flange. This type of wax ring helps prevent leaks and sewer odors when installed correctly.
We also used Oatey Liquilock water-absorbing crystals during the process to safely absorb standing water and keep the work area clean while removing and reinstalling the toilet.
Using the right materials makes a real difference in how long the installation lasts and how reliable it is over time.
Need a Professional Toilet Replacement or a Local Plumber?
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We handle toilet replacements, emergency plumbing, and full repairs with attention to detail – not shortcuts. We’re available 24/7 for residential plumbing service.
How do I know it’s time to replace my toilet?
If your toilet is more than 10 years old and you’re dealing with leaks, cracks, rocking, or constant repairs, replacement usually makes more sense than fixing it again. Older toilets are less efficient and small issues often turn into bigger problems over ti
Should the shutoff valve be replaced when installing a new toilet?
In most cases, yes. Toilet replacements usually happen after many years, and the shutoff valve is often just as old. Valves can wear out, start leaking, or be outdated push-style valves. Replacing the shutoff valve during a toilet installation helps prevent future leaks and avoids another service call later.
Will replacing the toilet fix a clog?
Not necessarily. If a toilet keeps clogging, the issue is often in the drain line, not the toilet itself. In some cases, a simple toilet auger can solve the problem. Each situation should be checked individually before deciding on replacement.
Is a leaking toilet always caused by the wax ring?
Not always, but it’s very common. A failed wax ring can cause leaks at the base of the toilet and sewer odors. Other causes may include loose bolts, a damaged flange, or movement of the toilet over time. Proper inspection is needed to find the exact source.
Can I replace just the toilet without updating anything else?
You can, but it’s not always the best idea. If the shutoff valve, supply line, or sealing materials are old, replacing everything at once is usually safer and more cost-effective. Doing it properly the first time helps avoid future leaks and repeat repairs.
