Your last line of defense
Clogged floor drains
A floor drain is the safety valve for the room it sits in. When it is blocked, the next failure in that room becomes a flood instead of an inconvenience.
Floor drains rarely get used, so the trap underneath quietly fills with grit, detergent, lint and debris until it can only take a trickle. Nobody notices, because nothing is asking it to do anything, right up until a water heater lets go or a washer hose bursts.
They also sit at the lowest point in the building, which makes them the first place a main line backup surfaces. That is the single most useful thing to observe: clean water standing in a floor drain points at the floor drain, dirty water points at the main line.
Read the water
- Clean water standing: the floor drain itself is blocked
- Dirty water rising: the main line is backing up
- Water appearing when another fixture runs: main line
- Sewer smell with no water: the trap has dried out
- Debris visible at the grate: start with the trap
Keeping it working
- Pour a gallon of water down it monthly to reseal the trap
- Lift the grate twice a year and clear what you can reach
- Keep stored items off the floor around it
- Never cap or seal it to control an odor
Do not seal it
Capping a floor drain to stop a smell removes the only relief point in the room. The odor means a dried trap or a restricted line, and both are fixable. Sealing it just guarantees the next failure has nowhere to go.
Straight answers
Questions about clogged floor drains
Why does my floor drain smell when nothing is wrong?
A dried-out trap. The water seal that blocks sewer gas evaporates in a drain nothing runs into, and Florida heat accelerates that. A gallon of water fixes it. If the smell returns within a day, the line is restricted.
Dirty water came up my floor drain. What now?
Stop using water everywhere in the building and call us. That is a main line backup surfacing at the lowest opening, so every fixture you use adds to what already has nowhere to go.
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