When your washing machine won’t drain properly, it can cause a serious backup—and a big mess in your laundry room. The good news? If the drain hose connects to a standpipe in the wall, it’s often something you can fix on your own. But in some setups, DIY can quickly turn dangerous.
Here’s how to tell the difference—and when it’s time to call a pro.
If You Have a Laundry Standpipe…
Many washing machines drain into a standpipe—a vertical pipe that’s connected to the home’s drain system and located behind or near the washer.
To clear a clog in a standpipe:
- Shut off the washing machine and remove the drain hose.
- Use a coat hanger or small plumbing snake to clear any visible blockages.
- Reattach the hose and run the machine on a drain cycle to check flow.
These clogs are often caused by lint, soap scum, and debris—and they’re relatively simple to fix.
If Your Drain Connects to the Roof Vent…
In some homes, especially older ones, the washing machine may drain through vent piping that runs up to the roof. This is a completely different scenario—and one you should never attempt on your own.
Why DIY isn’t safe here:
- Snakes often can’t reach the clog. The trap in the wall makes it nearly impossible to clear from the roof.
- It’s a major fall risk. Working on the roof is dangerous without the right safety equipment.
- You could damage your plumbing. Improper techniques can lead to expensive repairs or water damage.
Call the Pros for Roof Vent Drain Issues
If your washing machine backs up and you know it drains through a roof vent—or you’re not sure how it’s plumbed—don’t take the risk. A licensed plumber from Radiant can diagnose the clog, clear it safely, and inspect your system to make sure there aren’t any underlying issues.
Just Call Radiant.
From simple standpipe clogs to more complex drain line issues, we’ve got the tools and training to get your laundry back on track. Schedule online today.
