How to Prevent Your Washing Machine from Flooding

A flooded laundry room can cause serious water damage — and a lot of stress. Whether your washer is leaking or overflowing, you’ll need to act fast. Otherwise, you could face serious washing machine flooding that ruins your flooring and other possessions. This guide will explain what to do when your washing machine is flooded, how to prevent it, and why your washer leaves water all over the floor.

Why Do Washing Machines Flood?

Why has my washing machine flooded my floor? It could have happened for many reasons. Some of the most common causes of a washing machine flood include:

• Clogged drain lines can back up and overflow. 
• Worn-out hoses may burst or leak unexpectedly.
• Faulty water inlet valves can stick open and cause overflows.
• Improper detergent use leads to too many suds and can force water out of the drum.
• Accidentally washing items that can damage your washing machine.

Even a small leak can result in warped floors, mold, and costly repairs.

Signs Your Washing Machine May Be About to Leak or Flood

Now that you know why washing machines leak, you can keep an eye out for problematic signs. Catching problems early can save your floors. Watch for:

• Water pooling behind or beneath the washer
• Damp or moldy smells near the machine
• A bulging or cracking water hose
• Rust forming near hose connections or on the back panel
• Standing water in the drum after cycles

Even if your washer seems fine, it’s worth following a few basic washing machine maintenance tips to prevent problems before they start.

How to Prevent a Washing Machine Flood (Step-by-Step)

Here’s how to protect your laundry room from an unexpected deluge:

1. Inspect hoses regularly.
• Look for kinks, cracks, or rust around the fittings.
• Replace rubber hoses with braided stainless steel ones every 3 to 5 years.
2. Secure hose connections.
• Ensure all fittings are hand-tightened and not cross-threaded.
• Consider using thread seal tape for extra protection.
3. Clean your washer routinely.
• Run a cleaning cycle or use white vinegar and baking soda to break down the buildup.
• Learn more tips on how to clean your washing machine to keep it running efficiently.
4. Install a water shut-off valve.
• Add a lever-style shut-off or automatic shut-off valve between the wall and your washer.
• Keep the water flow turned off when the washer isn’t in use or if a leak is detected.
5. Use the right detergent.
• High-efficiency (HE) machines need HE-labeled detergent.
• Avoid non-laundry-rated cleaning products and chemicals that can harm your drains.
6. Avoid overloading the washer.
• Split bulky loads into two to prevent stress on seals and bearings.
• Follow your model’s manual for max load capacity.

Can Overloading a Washer Cause It to Leak?

Yes. Overloading a washer puts stress on the drum, bearings, and suspension system. This can throw the washer off balance and push water or suds out the sides or door. Always follow your user manual’s load size recommendations and wash heavy items like comforters separately.

What to Do If Your Washing Machine Floods the Floor

When you’re dealing with a washer that’s flooded, follow these steps immediately:

1. Shut off the power. Unplug the washer or flip the breaker. Don’t step in water if electrical connections are submerged.
2. Turn off the water supply. Use the shut-off valves behind the washer to cut off the flow.
3. Mop up standing water. Use towels, a wet/dry vacuum, or a mop to prevent damage from spreading.
4. Call a plumber. If you're unsure of the cause or the flooding is severe, bring in a pro.

Frequently Asked Questions

What causes washing machines to leak or overflow?

Washing machines can leak due to damaged hoses, loose connections, drain clogs, overloading, or using the wrong detergent. Overflow often results from suds buildup or a blocked standpipe that prevents water from draining properly.

Do I need to replace my washing machine hoses regularly?

Yes. Even if they look fine, most manufacturers recommend replacing washing machine hoses every 3 to 5 years to prevent failure.

Are certain hoses better at preventing leaks?

Braided stainless steel hoses are more durable than standard rubber ones and are less likely to burst under pressure. They’re widely recommended for long-term reliability.

Can a washing machine flood even when not running?

Surprisingly, yes. A hose can leak or burst while the washer is idle, especially if it’s always pressurized. Turn off the water supply valves if you’re leaving town or won’t use the machine for a while.

When to Call a Plumber for Washing Machine Leaks or Flooding

If you don’t know how to fix a flooded washing machine on your own, it’s best to call in a plumber for help. They can fix your leaking washing machine so it’s good as new — or recommend replacement if your washer has spun its last load.

Not sure who to call? Roto-Rooter is always here to help. We’re available 24/7/365 to help you with a washing machine that’s flooded your floor. We can even help with water damage cleanup and mold remediation. When you’re ready to get started, call one of our professional plumbing experts today.