Basement Floor Drain P Trap

There is a p trap in the 4 cast iron under the basement slab.

Basement floor drain p trap.

Unclog basement floor drain without using a plumbing snake. The p trap is a u shaped section of pipe that is designed to hold water to block dangerous sewer gas from rising up and into the home. Water in any trap under unused drains will eventually evaporate. But if you have a shower that s been abandoned since the kids moved out or a floor drain that never gets used the water in the trap can eventually evaporate.

The waste stack runs to the basement and changes from 3 to 4 cast iron 3 feet above the basement concrete slab. Many basement floor drains tie directly to the home s sewer system but in some communities local building codes require floor drains to run to a sump pit where a pump lifts the water to the exterior surface of the house. Finding the source of the basement smell. Will your basement floor drain always remain clogged.

But what if you don t have an auger or plumbing snake. Start the process by turning on the backflow preventer and removing the cap of the trap. When the drain line gets clogged if the. Basement floor drains don t get a lot of attention until the sewer backs up or the basement smells like an outhouse.

It connects on one end to the drain such as a floor drain or the drain of a restroom fixture and on the other end to the line going to the sewer. This will re prime the. Usually you can fix a dried up p trap by taking a gallon of water and simply dumping it down into the drain. Here s what you need to do to 1.

That will re prime the p trap and block out that nasty sewer odor. I have a 1st story bathtub with a 1 1 2 pvc p trap connected within 18 to a 3 cast iron waste stack and vent. Most of the time the sewer smell is caused because the water in the p trap has dried up or evaporated. Shaped like the round end of a p or a u the p trap is the place in your drains that stops sewer gas odors from shooting back up your drains into your place of business.

The rest of the drain is always buried in the basement floor. You have a water trap under a floor drain laundry tub or wash basin that has dried out from lack of use. Take a gallon of tap water and dump it down the floor drain. That lets in stinky or even dangerous sewer gases.

If you notice a foul sewer smell in your house or basement here are the five possible causes in order of probability.