All plumbing fixtures—including washing machines—must be vented. Improperly vented drains can be sluggish and noisy, and can emit hazardous fumes.
Properly vented drains allow the P-trap to do its job: prevent sewer gases from escaping into your home. When they’re not vented correctly, significant volumes of water (such as that flowing from a washing machine) can create a siphoning effect, pulling the water—and noxious gases—out of the trap and into the air.
Several key factors must be addressed when venting a washing machine drain:
- size of the vent
- location of the vent on the drain
- distance between the washing machine and the vent
- connecting vents from other fixtures
- proper slope of horizontal vents
- vent pipe material (ABS, PVC, copper, steel, cast iron)
- pressure class of the vent pipe
Keep in mind that it’s not necessary to have a separate vent from your washing machine to your roof; in fact, most homeowners prefer to have a common vent stack. However, when combining several fixtures onto one vent, they’ll need to be connected above the flood-level rim of the highest fixture.
To ensure your washing machine is properly vented, it’s best to enlist the help of a professional. Competency, skill, and a tradition of excellence make Maplewood Plumbing and Sewer the best choice for your plumbing or remodeling needs. All of our plumbers are licensed professionals with extensive industry knowledge.
Maplewood Plumbing and Sewer has been venting laundry drains in St. Louis homes for more than 30 years. Contact us today at 314-645-6350 or here for more information or to request a bid.
We offer a one-year warranty on all parts and labor excluding washers.
We are also experts in Kitchen plumbing, basement plumbing, bathroom plumbing and tankless water heater installation. Give us a call at 314-645-6350 or fill out the contact form here to request a bid.