Curtains are among the dustiest textiles in a house and among the least often cleaned, largely because taking them down feels like a project. It is less of one than it looks, provided you know which of yours can go in a machine — and provided you never put them in a dryer.
Check the type first
This is the only genuinely important decision. Unlined cotton, polyester and linen panels are straightforward. Lined and interlined curtains are not, because the face fabric and the lining shrink at different rates and a washed lined curtain frequently comes out puckered.
Triple-weave blackout curtains, which achieve opacity through dense weaving rather than a coating, wash normally. If you are unsure which you own, look at the back: a coated panel has a visibly different, slightly rubbery surface.
The method
- Shake or vacuum them first. Curtains hold a startling amount of dust, and washing it in makes a grey job of a clean one.
- Remove every hook, ring and weight. Metal hooks tear fabric in a drum and mark the machine.
- Cold water, gentle cycle, mild detergent at half the usual dose. Curtains are bulky and rinse poorly, so detergent residue is a real risk.
- Wash one pair at a time. An overloaded drum does not clean and creases far more.
Drying: rehang them damp
This is the part that saves an afternoon of ironing. Take the curtains out while still slightly damp, put them straight back on the rail, and close them fully. Curtains are heavy, and their own weight pulls the creases out as they dry — far more evenly than an iron would.
The corollary is that shrinkage is almost entirely a drying problem, not a washing one. A cold gentle wash rarely shrinks anything; twenty minutes of dryer heat routinely does.
How often
Every six to twelve months for most rooms, and every three to six for a kitchen, where curtains collect airborne grease as well as dust. If anyone smokes, or a pet sits at the window, quarterly.
Vacuuming with a brush attachment twice a year does most of the work between washes, and takes five minutes per window.
Coated blackout, done by hand
Cool water in a bath, a capful of mild detergent, submerge and press gently. Never wring or twist. Press the water out against the side of the bath, then rehang while genuinely wet with a towel underneath — they dry flat and crease-free on the rail.
A few specifics
| Problem | What to do |
|---|---|
| Mildew spots at the hem | Cold wash with white vinegar; treat the condensation causing it |
| Sun-faded panels | Not reversible — rotate panels left to right to even it out |
| Musty smell but no marks | Air outdoors on a dry day; often enough without washing |
| Puckered lining after washing | Rehang damp and let the weight pull it; otherwise dry clean next time |
| Grease film in a kitchen | Warm wash with a degreasing detergent, only if unlined and uncoated |
The short version
- Unlined cotton, linen and polyester: cold, gentle, mild detergent.
- Coated blackout: hand wash or spot clean only — heat cracks the coating.
- Lined, interlined, velvet and silk: dry clean.
- Never tumble dry. That is where shrinkage comes from.
- Rehang damp and close them; gravity replaces ironing.
- Vacuum twice a year, full wash every six to twelve months.
If washing has left you rehanging everything anyway, it is a good moment to fix the mounting — how high to hang curtains covers the height and width that make the biggest difference.
