How To Check & Remove Mould On Washing Machine Gasket

June 6, 2025
Doctor Appliance Blogs & Appliance Tips

Don’t let a simple mould escalate into a more serious problem. If you live in Ottawa and the surrounding areas and notice a mould on your washer gasket, immediately clean, or replace it if needed. Cleaning the gasket is easy and simple. In this blog, we will guide you through how to check for moulds, what to do about them, and who to call if the mould keeps coming back.

Here’s how to check for mould on your washing machine rubber gasket:

If your laundry smells off or your clothes aren’t coming out clean, it might be time to inspect the rubber gasket. Mould can form from leftover moisture, detergent residue, and poor ventilation. Here’s how to check it properly.

Turn Off the Washer

Unplug the appliance or turn it off completely before starting. This is an important step to stay safe while cleaning a washing machine.

Open the Washing Machine Door Wide

For a front load washer, the gasket is the rubber seal around the washing machine door. Gently pull it back to look inside.

Inspect the Inner Folds

This is where mould growth usually starts. Check for black or green patches, a slimy surface, or a strong musty odour. These are all signs of mould spores taking hold.

Check for Trapped Debris

Look carefully for lint, hair, or small items caught in the folds. These trap moisture and can lead to build-up and a mouldy smell.

Smell the Affected Area

Even if mould isn’t visible, a bad smell could mean it’s deeper inside. This is common when the gasket stays damp after every wash cycle. Leaving the door open after use helps prevent mould in a washing machine.

To get rid of mould, you may need a remover made with white vinegar, baking soda, or hydrogen peroxide. Spray it using a spray bottle, then scrub the area with a microfiber cloth or soft-bristled brush. After that, rinse with warm water and let it air dry. Always leave the door slightly open and clean the detergent drawer regularly to stay mould-free.

What to do if You Find Mould in Washing Machine Rubber Seal

If you spot mould on your washer’s rubber seal, act fast to stop it from spreading. Here’s a simple way to clean your washing machine and make it mould-free again.

Wear Gloves

Start by putting on rubber gloves. Many cleaning agents can irritate the skin during use.

Mix a Cleaning Solution

You’ve got a few options here:

Use white vinegar on its own
Mix 1 part bleach with 10 parts water to clean
Choose cleaning products made to kill mould in appliances

Scrub the Gasket

Open the washer door and pull back the rubber seal. Use a cloth soaked in your solution to wipe the inner folds. For tough spots, scrub gently with an old toothbrush. This helps remove hidden growth and mildew.

Rinse and Dry

After cleaning, rinse the gasket with a damp cloth to get rid of any leftover cleaner. Use a dry towel to make sure the area is fully dry. This step helps prevent mould growth.

Run a Cleaning Cycle

Run an empty hot cleaning process with 2 cups of vinegar or ½ cup of bleach. Never mix them as this can release a dangerous fume.

Leave the Door Open

Always keep the drawer open and washer door ajar after use. Good airflow helps keep moisture out.

Maintain Weekly

Wipe the gasket weekly, clean the dispenser and compartment, and run a drum cycle monthly. Avoid using too much fabric softener as it can lead to stain buildup from constant exposure.

If mould keeps coming back, it might be time to replace the gasket or contact our washer repair tech. Regular care is a great way to clean and protect your high-efficiency washer.

Cleaning Methods to Remove Mould in a Washing Machine

Once you check for mould on your washer gasket, it’s time to clean it properly. Different cleaning methods work for different levels of build-up. Here’s what to use:

Vinegar and Water

Mix equal parts white vinegar and water. Spray or apply it to the gasket and let it sit for a few minutes. Use a cloth or old toothbrush to scrub inside the folds. Rinse and dry completely.
Best for: Light mould and regular maintenance.

Bleach Solution

Mix 1 part bleach with 10 parts water. Wear gloves and make sure there’s airflow in the room. Apply with a sponge or cloth, scrub gently, then cleanse well to remove any leftover solution.
Best for: Heavy mould or strong smells. Avoid mixing with vinegar to prevent dangerous fumes.

Commercial Cleaners

Use products made for washers and follow all label directions. Skip anything abrasive so you don’t damage the rubber.
Best for: A deep clean when regular methods aren’t enough.

Hydrogen Peroxide

Spray 3% hydrogen peroxide directly onto the gasket. Let it sit, polish, then wash. This is an effective mould remover that doesn’t leave strong odours behind.
Best for: Killing mould without bleach or harsh chemicals.

Dish Soap and Warm Water

Mix dish soap with warm water. Wipe down the gasket after every wash. This helps remove fabric softener residue and stops build-up before it starts.
Best for: Daily upkeep.

Washer Cleaning Cycle

Use your washer’s drum or tub clean setting with vinegar or bleach. No clothes inside. Make sure to clean the drawer too, and check water temperature if needed.
Best for: A full-system refresh after you let mould build up.

In doing these simple cleaning techniques, you can ensure that your washing machine will be free of mould and odour. If you need a deep clean maintenance, contact Doctor Appliance Repair Ottawa and schedule a slot.

The Importance of Clean Gasket To Prevent Mould in Washing Machine

Our professional techs encourage homeowners in Ottawa that once you’ve learned how to check for mould on your washing machine gasket and clean it properly, it’s important to understand why regular upkeep matters. Here are some of the reasons:

Prevents Mould and Mildew

The gasket holds moisture after every wash. If left dirty, it creates the perfect space for mould and mildew to grow. That leads to a washing machine with bad smells and can even affect air quality in your laundry area.

Keeps Your Laundry Smelling Fresh

A mouldy gasket can leave clothes smelling off. You might notice a musty odour even after a fresh load. Keeping the seal clean helps make sure your laundry smells as it should.

Protects Washer Performance

Detergent buildup or debris stuck in the gasket can prevent the door from sealing properly. This can cause water leaks and mess with how the washer runs. Regular cleaning keeps it working as it should.

Extends the Life of Your Washer

A clean gasket stays flexible and does its job. If mould or grime builds up, it can break down the rubber over time. That means sooner repairs or even needing to replace the gasket. Wiping it down regularly helps avoid all that.

Saves You Money

Leaks and smells often lead to service calls or part replacements. A clean gasket lowers the risk of damage and cuts down on repair costs.

In short, don’t wait to let mould take over. A quick wipe after each load and a regular cleaning routine go a long way in keeping your washer running well and your clothes smelling clean.

When To Call a Professional Washing Machine Technician?

Call our professional washer repair technician in Ottawa if you’re facing these issues:

Even after cleaning the washing machine thoroughly, the mould keeps coming back.

There’s a strong smell that won’t seem to go away.

Mould has spread beyond the gasket, possibly inside the drum or hoses.

The gasket is damaged, cracked, or leaking.

In these cases, our technicians can inspect your entire washer, deep clean it, or change the gasket if needed be. Contact Doctor Appliance Repair Ottawa today to schedule a repair.