A Nearly New Washer, a Door Gasket Full of Mold
The LG WashTower was almost new, and the door boot still had to come out — how a closed door grows mold in the folds of the gasket, and the habit that prevents the whole repair.
In this guide
This LG WashTower is nearly new. It’s a stacked washer and dryer built into a cabinet, and we had the front panel off with a replacement door boot still sealed in the bag. The old gasket was full of mold, and the owners asked us to swap it. A machine this new shouldn’t need a door seal, and the reason this one did comes down to a habit.
Mold grows in the folds of the rubber
The door boot on a front-load washer is a rubber bellow with deep folds. After a wash, water sits in those folds. Shut the door right away and the rubber never dries; it stays damp, and damp rubber grows mold. That’s the whole story here: the door was kept closed after every cycle, and the gasket never got cleaned. The mold came from the routine around the machine.
The inner spring is the hard part
Swapping the boot itself is a straightforward job. The skill is in the inner spring, the ring that clamps the boot onto the tub deep behind the front panel. You stretch it on with a hook tool; there’s no doing it by hand. The area around the tub is crowded with protruding parts, and the spring catches on them as you work — which is exactly why this step separates a clean install from a struggle.
Two hooks for the outer spring
The outer spring goes on much more easily. Two hooks: one holds the spring from below so it can’t jump off, the other pulls it up and over and tucks it straight into the groove. You work your way around a little at a time so the boot doesn’t twist.
The check that decides whether it leaks
With both springs on, press the lip in by hand and check the seating. The spring should sit down in its groove the whole way around, with no high spots. Then the pull test: tug the boot all the way around. Uneven seating leaks; even seating holds. On this install, everything sat tight the whole way around.
Leave the door open after every cycle
The new boot will mold again if it stays wet. The prevention is free: leave the washer door open after every cycle so the folds air out and dry. Wiping the gasket dry now and then helps too. That’s the entire maintenance plan for this part, and it beats paying for the replacement.
Washer trouble at your place
We replace door boots and repair washers across Los Angeles, alongside washer repair and dryer repair on units of every configuration, including stacked machines built into cabinets. If your washer smells musty, leaks at the door, won’t drain, or is throwing an error code, we find the actual cause. Same-day on most calls, 30-day labor / 90-day parts warranty. Call or text (213) 205-2055, or book online.
FAQ
Why does mold grow in a front-load washer door gasket?
The door boot is a rubber bellow with deep folds, and water sits in those folds after a wash. When the door gets shut right after the cycle, the rubber stays damp, and damp rubber grows mold. On this LG WashTower the door was kept closed after every cycle and the gasket never got cleaned, so the boot filled with mold long before it wore out.
Does a moldy door gasket mean something is broken on the washer?
Not on this job. The machine is nearly new and nothing on it failed. The mold came from the routine around the washer: a closed door kept the rubber damp. The boot was replaced, and the habit that matters now is leaving the door open so the new one stays dry.
What's the hard part of replacing a washer door boot?
The inner spring. It clamps the boot onto the tub deep behind the front panel, and it has to be stretched on with a hook tool — there's no doing it by hand. The area around the tub is crowded with protruding parts the spring catches on, which is what makes this step the skill of the job.
How does the outer spring go on?
With two hooks. One holds the spring from below so it can't jump off, and the other pulls it up and over and tucks it into its groove. You work around a little at a time so the boot doesn't twist.
How do you check that a new door gasket won't leak?
Press the lip in by hand and confirm the spring sits down in its groove the whole way around with no high spots, then do a pull test: tug the boot all the way around. A boot that sits unevenly will leak; on this install everything held tight.
Do you replace washer door gaskets in Los Angeles?
Yes — door boot replacement and washer repair across Los Angeles, including stacked units like the LG WashTower built into cabinets. Same-day on most calls, with a 30-day labor and 90-day parts warranty on the work.
Got an appliance that needs fixing? We cover LA and the Valley.
Call (213) 205-2055 or text a photo of your appliance.