What to Do About Smelly Floor Drains

If your business requires floor drains for regular drainage or just in case of overflow spills, you likely won’t be giving them much thought. Well, you won’t give them much thought until they demand it. One of the potential issues with floors drains is that sometimes they can grow quite smelly.

What to Do About Smelly Floor Drains

Interestingly enough, floor drains that have started to smell often aren’t caused by overuse, but rather are caused by underuse. Like many drains, a floor drain uses a U-shape P-trap in order to prevent any sewer gas from rising up from it. This P-trap is filled with water that physically blocks the release of sewer gas into the area above it.

The issue that can occur is that when you regularly have water flowing into the drain at intervals, the P-trap gets refilled. Yet, if the drain sits idle, the water in the P-trap will evaporate. With no drainage water to refill it, sewer gas can flow back up. This is what is likely causing your stinky floor drain. This issue happens a lot with floor drains that are meant to prevent overflow accidents. If they are only used in the event of a malfunction, they will not get enough water to keep the P-trap filled.

While clogs and a need for cleaning can also cause a smelly floor drain, you should always suspect the P-trap being dry first because it is an issue you can fix yourself. You simply need to use the drain. Every month or so, if the drain has not been used, you should dump a few gallons of water down the drain to ensure the P-trap is refilled.

While solving a dry P-trap is something you can very easily do yourself, if your issues are more serious than this, contact us today. Katy Commercial Plumbing is dedicated to helping businesses keep all their plumbing flowing perfectly.