Why your washing machine's seal needs attention before summer laundry season

The seal problem no one talks about

Your washing machine's door seal is working overtime, especially after a damp Metro Vancouver winter. This rubber gasket—the ring that keeps water inside the drum—traps moisture, detergent buildup, and lint. By late spring, it becomes a breeding ground for mould and mildew. Unlike dramatic failures, a failing seal often goes unnoticed until water starts pooling on your laundry room floor.

What spring moisture does to your gasket

Coquitlam's humid climate means your seal never fully dries out between loads. Over four to five months of winter use, moisture seeps into the fold of the gasket where you can't see it. Detergent residue hardens in those creases, and mould colonises the damp rubber. By May, the gasket loses its flexibility and won't compress properly against the door. The result: small leaks that only show up when you run a heavy load.

How to inspect your seal in five minutes

Open the door fully and look at the rubber gasket running around the inside edge. Run your finger along the outer and inner folds—these are where problems hide. Look for black or pink spots (mould), white crusty deposits (mineral buildup), or visible cracks. Gently pull the outer lip away from the door frame; the rubber should feel firm but flexible, not cracked or hardened.

The vinegar fix for early-stage mould

If you spot surface mould or discolouration, a simple clean often solves the problem. Mix equal parts white vinegar and water in a spray bottle. Spray the entire gasket, paying close attention to the upper fold where water pools. Use a soft brush or old toothbrush to gently scrub the creases. Wipe dry with a clean cloth, then leave the door open for 24 hours. This removes trapped moisture and kills early mould before it spreads.

When to call a repair technician

If the seal shows deep cracks, permanent discolouration that doesn't clean away, or visible tears, replacement is needed. A damaged gasket will leak during the spin cycle, and no amount of vinegar will fix structural failure. Replacement gaskets are affordable, but delaying the repair risks water damage to your subfloor—especially important in older Coquitlam homes with wood-frame construction.

Prevention for the busy season ahead

Victoria Day weekend and summer entertaining mean your washing machine is about to work harder. Make it a habit to leave the door open between loads for at least an hour. This allows the gasket and drum to dry completely, preventing the moisture trap that leads to mould. If you notice any smell—that distinctive musty odour—coming from the machine, the seal is already compromised. Clean it immediately or have it inspected before you're dealing with laundry room water damage during a busy weekend.

A healthy seal is invisible work, but it's the difference between a washing machine that runs smoothly for years and one that costs you money in water damage and emergency repairs.