How do basement floor drains work?

They’re built so that the concrete floor immediately surrounding the drain slopes inward so that water can collect in the drain and be carried away from the house. Most floor drains today direct water toward a collection pit where it is then pumped out to the surface of the property via a sump pump.

Where does the drain in the basement floor go?

What most people don’t know is that their home basement floor drains are usually directly tied to the sewer system of the whole house. In some houses, they even run directly into a sump pit from which the water is lifted to the exterior surface with a pump.

Does a basement floor drain have a trap?

The floor drain is considered a sanitary fixture. That means it functions just like a toilet or sink or shower. It has a trap inside of it just as those items do, and it holds water to seal away any foul odors trying to get into your basement.

Is basement floor drain connected to sewer?

Your basement floor drain is located at the lowest point of your basement, and its job is to direct any water safely away from the house and to the sewer system or municipal storm drain system. This keeps your basement floor dry and prevents flooding, which may damage personal belongings.

Should there be water in the basement floor drain?

Yes, floor drains should have water in them. They contain drain traps that keep them clean. Therefore, it is necessary to have a fixed volume of water in your drain. Ideally, many suggest maintaining the water level at least 2-3 inches below the drain.

Why Do basement floor drains back up?

Floor Drain

Since it is there to drain excess water in your basement, it typically stays pretty dry. However, clogs and excessive rain water may cause the drain to backup. In the case of a clog, the blockage could be located in the drain, the house trap or the sewer main.

Why is there poop in my basement?

What Causes a Sewage Backup? Clogs, buildups in pipes from grease, or improperly flushed items, such as paper towels or single-use wipes, are common causes of sewage backup. Damage to the sewer lines can also cause a sewage backup because it prevents water from flowing correctly.

Does a basement floor drain need a vent?

The floor drain trap will need it’s own vent, though once you are above floor level with the vent, you may make horizontal runs and tie into other vent pipes provided the sizing is appropriate. Some codes allow a mechanical venting device, which obviates the need to run the vent outside somehow.

How do I clear my basement floor drain?

Try a Plunger: A minor clog should clear after a few strong pumps with a plunger. Place the plunger cup so it completely covers the drain opening, and then go for it! Baking Soda &amp, Vinegar: Plunger didn’t do the trick? Try pouring baking soda down the drain, then chase it with a healthy amount of white vinegar.

Do all floor drains have traps?

All drains and gutters shall be installed with traps and vents approved by the Department.

Can you put Drano in basement drain?

Can you put Drano in a basement floor drain? Yes, Drano is safe to put down most drains. If one bottle does not clear the sewage backup you will need to use a plumber’s snake.

When I flush my toilet my basement floods?

If your basement floor drain backs up when the toilet is flushed, it’s caused by a blockage in your home’s sewer line. The most common source of these blockages is flushing items that aren’t meant to be flushed, but tree roots invading the sewer line can also cause blockages.

Why is my basement floor drain not draining?

The most common issue occurs when sediment or waste accumulates in the pipes over time and creates a clog large enough to slow down the flow of the water. Other possible causes include broken or damaged pipes, water flow issues, or even pipes that were installed incorrectly in the first place.

How do I stop water coming up my floor drain?

Install Check Valves to Prevent Flooding

Have a plumber install check valves on your floor drains and all of your basement plumbing fixtures. A check valve lets water run out of the drain as designed but prevents water from flowing back into the drain.

How do I stop my basement drain from backing up?

How to Prevent a Sewage Backup in the Basement

  1. Don’t pour grease down the drain. …
  2. Dispose of paper products properly. …
  3. Install a new plastic pipe or cut tree roots. …
  4. Install a backwater prevention valve. …
  5. Sewage pump maintenance.

How do you stop a floor drain from backing up?

If you do not have a backwater valve, plugs with backflow devices can be installed in floor drains. These plugs have a ball or float that will stop water or sewage from backing up into a home while permitting water to flow into the drain. These plugs can be left in place year-round.

Why does the basement smell like poop?

This odor is generally the result of a build-up of waste materials found in a septic system or public sewer system. It may be caused by a crack or clog in the plumbing system itself, or a crack or clog n the venting pipes. Sewer gas problems are generally extensive and can be very serious if not dealt with promptly.

What causes smell in basement?

Underground living spaces can’t hold moisture like the upper levels of your home. When the warmer air from above seeps into your basement, the moisture in the air condenses, and ends up on your dark basement walls and cold water pipes. Mold begins to form, and the unpleasant smell you can’t seem to shake is born.

Can a floor drain be wet vented?

909.2. 1 Horizontal wet vent. The dry-vent connection for a horizontal wet-vent system shall be an individual vent or a common vent for any bathroom group fixture, except an emergency floor drain.


Pipe Size (inches) Maximum Discharge from Upper Fixture Drain (dfu)
2 1/2 to 3 6

How do I know if my basement drain is vented?

You can check by running a large amount of water down the drain. If it’s not vented correctly, it will gurgle, bubble and pop. A new drain should run freely.

How do I know if my floor drain is vented?

If the outlet of the trap were down at the same level as the sanitary main and the piping was installed such that there was a wet vent or circuit vent, then the trap would be vented.

Can you plunge a floor drain?

Using a Plunger to Unclog Floor Drains

After the jelly is on, put a little elbow grease into plunging the floor drain. After you plunge, you should pour water down the drain to see if the clog is gone and if the water successful goes down the drain without backing up.

What size are basement floor drains?

The minimum size for a floor drain is 2 inches in diameter. It can be larger, but no smaller. The minimum size is intended to make sure that even running at full capacity, the pipe that the drain leads to will never be more than half full.

What does a drain trap look like?

How Do P-Traps Work? | Spec. Sense – YouTube

How do you unclog a main drain without a snake?

Combine 1 part baking soda and 1 part vinegar, then pour it into the sewer cleanout opening. Wait at least 1 hour before flushing it with hot water. The baking soda and vinegar will start reacting and fizzing immediately. Pour it into the pipe as quickly as possible.

How much does it cost to unclog a basement drain?

Most plumbers offer flat rates on basic drain cleaning, while unclogging severe drains is billed at $45 to $150 per hour plus parts.

Plumber Cost To Unclog Drain.

National Average Cost $216
Average Range $100 to $275

How do I stop my basement from flooding in heavy rain?

8 Tips for Flood-Proofing a Basement

  1. Install a Sump Pump. …
  2. Install a Backwater Valve. …
  3. Seal Your Basement. …
  4. Properly Grade Around the Foundation. …
  5. Install a French Drain. …
  6. Check Your Landscaping. …
  7. Use Downspout Extensions. …
  8. Keep Your Gutters Clean.

How do you get rid of sewer smell in basement after flood?

Use a Cleaning Solution

One easy way to keep your pipes clear and odor-free is to pour a one-quarter cup of baking soda down the drain, followed by one cup of vinegar. Seal the drain, wait 30 minutes, and then flush the drain with hot water.

Why does my basement toilet gurgle when I flush the upstairs toilet?

When a toilet gurgles, it indicates that negative air pressure (suction) is building up in the drain line, creating an airlock of sorts. … Gurgling indicates abnormal suction building in the line. The negative air pressure will eventually release, pushing air backward through the drainpipe and into the toilet bowl.