Here is a test worth doing right now. Walk over to your curtains, open out one of the folds near the top, and compare the fabric that has been hidden inside the pleat with the face that has been on show. In most homes there is a visible difference in tone.
That gap is the answer to how often curtains should be cleaned, because it is dust and light damage that accumulated so gradually your eye adjusted along with it. Nobody looks at their curtains and thinks they are dirty. They just quietly stop looking new.
The schedule, by room
Two different jobs, running at very different intervals. The monthly one is what keeps the yearly one rare.
| Room or situation | Vacuum | Deep clean |
|---|---|---|
| Living room, average | Monthly | Every 1 to 2 years |
| Bedroom | Monthly | Every 1 to 2 years |
| Kitchen or diner | Monthly | Every 6 to 12 months |
| Nets and voiles | Monthly | Every 3 to 6 months |
| On a busy road, window often open | Fortnightly | Annually |
| Smokers, pets, or an open fire | Fortnightly | Every 6 to 12 months |
| Allergy or asthma household | Fortnightly | Annually |
| Spare room, rarely used | Quarterly | Every 2 to 3 years |
Deep clean here means washing or professional cleaning, depending on what your curtains will tolerate. Check that before booking anything, because plenty of curtains cannot be washed at all.
Why kitchens are the outlier
Kitchen curtains get dirty roughly twice as fast as anywhere else, and the reason is grease rather than dust. Cooking puts a fine aerosol of fat into the air, it settles on the fabric, and from then on the curtain is slightly tacky. Dust that would otherwise drift past sticks to it instead. That is why kitchen curtains go from fine to visibly grey in what feels like no time, and why an extractor fan you actually switch on is more useful than any cleaning product.
Bedrooms are dustier than people think
People assume the living room is the dirty one because that is where life happens. In practice bedroom curtains often collect more, because making a bed throws a considerable amount of fibre and skin cell dust into the air, and it has nowhere to go but onto the nearest large vertical surface. If anyone in the house has hay fever or asthma, that matters, because opening and closing the curtains puts it straight back into the air you sleep in.
Five signs they are overdue
- The fold test shows a clear difference between hidden and exposed fabric.
- The top 30cm looks darker than the rest. Dust settles heaviest at the heading.
- You can smell them when you draw them, particularly in a kitchen or a smoking household.
- Dust puffs out visibly in sunlight when you close them.
- The hem is grey. The bottom edge sweeps the sill or floor and picks up everything there.
The five-minute monthly job
This is the entire routine, and doing it is the difference between deep cleaning every year and deep cleaning every three.
- Draw the curtains fully closed so the whole face is exposed and flat.
- Vacuum top to bottom with the upholstery brush, in overlapping vertical strokes.
- Go over the heading and the top third twice. That is where most of it sits.
- Do the hem, and the back of the hem, which sweeps the sill.
- Open and close them a few times to shake out what is left, ideally with a window open.
Before you plan any deep clean, check whether your curtains can actually be washed. Lined, interlined, blackout and silk curtains generally cannot, and finding that out afterwards is expensive. Our guide to washing curtains at home walks through the three checks that take about a minute.
A note on fading
Worth being straight about this: some of what you see when you do the fold test is not dirt at all, it is UV fading, and no amount of cleaning brings that back. What cleaning does is stop the two compounding each other, because dust sitting on fabric in strong sunlight accelerates the damage underneath it. Rotating a pair of curtains end for end once a year, so the leading edge changes sides, evens out the wear surprisingly well and costs nothing.
Where this advice comes from
We work to the standards below, and we have pointed you to them directly so you can check anything here yourself rather than taking our word for it.
- Allergy UK — Guidance on reducing house dust mite reservoirs in soft furnishings, which is the main health reason to keep on top of curtains.
- Textile Services Association — Background on professional textile care and which fabrics need solvent rather than water cleaning.
- Which? cleaning advice — Independent testing on vacuums and steamers, which are the two tools that do most of the work here.
What we would actually buy
Almost nothing here is a cleaning product. Curtains are a dust problem, and dust is solved with a vacuum attachment.
The upholstery brush on your vacuum
The whole routine, really. Top to bottom, overlapping strokes, twice over the heading. Do this and the deep clean interval stretches by years.
A handheld garment steamer
Freshens fabric and drops creases while the curtains stay on the rail. Particularly good on lined curtains that you would rather never wash.
A degreasing spray, used on the window frame not the curtain
Slightly sideways advice: airborne grease is what makes kitchen curtains dirty. Wiping the surrounding frame and sill regularly reduces what transfers across.
A mesh laundry bag
A couple of pounds, and it stops thin voile snagging or twisting round the drum. Wash cool, hang damp, and they usually need no ironing at all.
Nobody pays us to list these and there are no affiliate links on this page. They are simply what we have found works, and in several cases the cheapest option genuinely is the best one. Whatever you use, patch-test it somewhere hidden first.
The Carpetix Team
We are a carpet, upholstery and rug cleaning team based in Leytonstone, East London. We write these guides from what we run into on actual jobs, which is why you will find us telling you when to leave something alone or handle it yourself rather than call anyone out. If a guide here saves you a call, it has done its job.
Last reviewed and updated 31 July 2026
