Five-minute toilet check, room by room
Do this with a flashlight once or twice a year. It catches most problems before they leak.
- Look at the flexible connector from the wall valve to the tank. Fraying, rust spots or bulges mean replace it.
- Check the plastic nut at the tank end for hairline cracks.
- Turn the wall valve off and on. If it will not turn or drips at the stem, plan to have it replaced.
- Listen for the tank refilling on its own between flushes, a sign of a worn flapper or fill valve.
- Press gently on the bowl. Any rocking can break the wax seal and let water under the floor.
- Look at the ceiling directly under each upstairs toilet for faint rings.
How a small part becomes a big repair
Braided stainless connectors look sturdy, but the hose inside is rubber or plastic, and it ages. When one bursts, it does so at full line pressure, and an upstairs bathroom floor holds very little water before it starts running through the subfloor at the toilet flange and around the tub. The ceiling below often shows the first sign, and the water keeps flowing until someone closes a valve.
Plastic fill valves and tank nuts are a different kind of risk. A cracked coupling nut may hold for months and then let go. A fill valve that sticks open usually just overflows into the bowl, but a cracked valve body can spray inside the tank and over the lid.
In a house that is 25 to 40 years old, there may be original parts on one toilet and replacements of unknown age on another. Writing down when each part was changed removes the guesswork.
Parts, warning signs and who replaces them
| Part | Warning signs | Usually handled by |
|---|---|---|
| Flexible connector | Fraying, kinks, rust spots, age unknown | Handy owner or plumber |
| Wall shutoff valve | Stiff handle, drip at stem, will not fully close | Plumber, especially if the pipe behind is polybutylene |
| Fill valve | Constant refilling, hissing, water hammer | Handy owner or plumber |
| Tank-to-bowl gaskets | Drips under the tank after flushing | Plumber |
| Wax ring | Rocking toilet, stains near the base or on the ceiling below | Plumber |
When you find water at a toilet
- IfWater is spraying from the connector or valveThenClose the toilet valve or the main, then mop up and check the ceiling below.
- IfWater is clean but has been on the floor for hoursThenAssume the subfloor and ceiling below are wet; moisture readings will show how far.
- IfThe bowl overflowed with wasteThenTreat it as contaminated; porous materials it touched usually need to be removed, not dried.
- IfOnly a small stain below, no active waterThenCheck the wax ring and connectors, and have the ceiling read before repainting.
General information for Highlands Ranch, not a quote or professional advice. In an emergency, call 911.