Pulling a clean load out of the dryer and finding dark streaks or grey smudges is maddening, and it can ruin good clothes. The cause is usually inside the dryer rather than the washer. Often it points to a worn part at the front or back of the drum. Sometimes it is just a pen or crayon that rode through the wash in a pocket.
It is a common complaint from Calgary customers, and the type of mark usually tells you where to look. Here is how to read the stains, what you can clean up yourself, and when a part needs replacing.
Match the mark to the cause
Before taking anything apart, look closely at the stains and where they sit on the clothes. This table covers the patterns we see most often.
| What the mark looks like | Likely cause | Who fixes it |
|---|---|---|
| Black or dark grey lines at the edges | Worn drum glides or felt seal | Technician |
| Grey, dusty smudges | Lint build-up or a dirty drum | DIY clean |
| Coloured or waxy spots on many items | Pen, crayon, lip balm or gum | DIY clean |
| Brown or rust-coloured spots | Chipped drum coating or rust | Technician |
| Greasy, dark blotches | Too much softener or dryer sheets | DIY, change habits |
| Tears or snags at the edges | Gap from a worn seal | Technician |
Worn drum glides and felt seals
Many dryers support the front of the drum on plastic or nylon pads called drum glides. A felt seal lines the front and back edges of the drum to stop air and clothes from slipping through the gap between the drum and the bulkheads. With years of use, glides wear thin and felt seals tear, harden or come unglued.
What happens when they wear
Once the glides are worn, the metal edge of the drum can rub against the bulkhead. That metal-on-metal contact makes fine black dust, and any clothing caught near the edge picks up dark lines. Small items like socks can even get pulled into the gap and torn.
Signs to look for
- A scraping or grinding noise as the drum turns.
- Black dust around the door opening or the lint screen housing.
- Clothes snagged or torn at the edges.
- Fine black specks along the front lip of the drum.
Worn glides and seals usually show up together with noise, so our post on a squeaking or squealing dryer may help too. Replacing them means taking the dryer apart, so it is a technician job.
Lint, residue and a dirty drum
Grey fluff from poor airflow
When lint is not leaving the dryer properly, because of a clogged screen or a restricted vent, it circulates and sticks to dark clothes as grey fluff. Towels and new fleece shed heavily, so drying them with dark clothing makes the problem worse even in a healthy dryer.
Softener and dryer sheet residue
Heavy use of fabric softener or dryer sheets leaves a waxy film on the drum. On a hot cycle that film softens and can transfer to fabric as darker, greasy-looking blotches, especially on polyester and athletic wear. Sheets can also stick to the inside of the drum and stain the item pressed against them.
To clear lint and residue problems:
- Wipe the drum and door seal with a damp cloth and a little dish soap.
- Wash the lint screen with warm soapy water if it looks glazed.
- Use less softener, or switch to wool dryer balls for a while.
- Check that air blows strongly at the outside vent hood.
A vent that has not been cleaned in years causes lint problems through the whole machine, and a professional dryer vent cleaning clears the full run. Our guide on how often to clean your dryer vent explains the schedule.
Pens, crayons and pocket surprises
Ink pens, crayons, lip balm and gum melt in the heat and smear across the drum. The next few loads then pick up the stain. If you see coloured or waxy spots, clean the drum before you dry anything else.
- Unplug the dryer and let the drum cool.
- Find the residue on the drum, the paddles and the door.
- For ink, wipe with a cloth dampened with rubbing alcohol, then follow with a damp cloth.
- For wax or crayon, use warm water and a little dish soap on a soft cloth.
- Leave the door open until the drum is completely dry.
- Tumble a load of old rags on a short cycle to pick up any leftover residue.
Avoid harsh solvents, and never put anything flammable in the drum. Checking pockets before washing is the best prevention.
Stains already set into clothes need treating before they go back in the dryer, because heat sets them further. Rubbing alcohol on a cotton pad lifts most ballpoint ink from cotton, and a dull knife plus a warm iron over a paper towel draws melted crayon or wax out of fabric. Test any treatment on a hidden seam first, then wash the item normally and let it air dry until the mark is gone.
Rust and a chipped drum
Older dryers with painted or coated drums can chip, especially if heavy items like shoes, work boots or anything with metal buckles are dried often. Bare metal then rusts and leaves brown spots on light clothes. Newer dryers usually have stainless steel drums that do not rust, so this is mostly a problem on older machines.
Small chips can sometimes be sealed, but a rusted-through drum usually means a drum replacement or a new dryer. Our post on whether to repair or replace a dryer helps with that decision.
Safe checks before you call
Always unplug the dryer before looking inside or cleaning the drum. On a gas dryer, leave the burner area and gas line alone, and if you smell gas, leave the house and call ATCO Gas emergency at 1-800-511-3447.
- Run your hand slowly around the front and back drum edges. Feel for torn felt, rough spots or bare metal.
- Look for black dust near the door opening and the lint screen.
- Check the drum surface for chipped coating or rust.
- Turn the drum by hand and listen for scraping.
Do not glue a loose felt seal back with household glue. The wrong adhesive fails under heat or gives off fumes.
Protect your clothes until it is fixed
If you have to keep using the dryer for a few days, turn good clothes inside out, put small items in a mesh laundry bag so they cannot slip into the drum gap, and dry delicate or dark pieces on a rack. Keep an eye out for new tears, and stop using the dryer if the scraping gets louder.
When to call a technician
If you find torn felt, worn glides, black dust or a scraping noise, book a repair before the drum damages more clothes or wears into the bulkhead. In most cases a technician can replace glides, seals and rollers in one visit. If the drum is also struggling to turn, our dryer not spinning page explains what is involved.
Fast Appliance Repair works on gas and electric dryers of every brand across Calgary, Chestermere, High River and nearby towns, usually the same day. Call (587) 779-6919 to book. You get a flat diagnostic fee, a full quote before work starts and a 90-day parts and labour warranty.