Curtains are the last thing most households think about cleaning and the first thing a visitor notices when the light comes through them. Years of dust, cooking residue and settled pollen dull the colour so gradually that nobody registers it until a curtain is cleaned and hung next to one that has not been.
The reason they get left is practical. Taking down heavy lined curtains, cleaning them safely and getting them back up is a real job, and a domestic wash often ruins them.
Why washing curtains at home goes wrong
Most made to measure curtains are constructed from more than one material. The face fabric, the lining and often an interlining all behave differently when wet, and they shrink at different rates. The result is puckered seams, a lining that hangs shorter than the fabric, and pleats that never sit the same way again.
Heavy curtains also become extremely heavy when wet, which strains the heading tape and the hooks. Add potential dye bleed on strong colours and the risk starts to outweigh the saving.
- Face fabric and lining shrink at different rates in a wash.
- Interlining can bunch permanently once soaked.
- Wet weight strains heading tape and pinch pleats.
- Strong dyes can bleed into paler linings.
- Rehanging heavy curtains is awkward and often needs two people.
How the in situ method works
On site cleaning treats the curtains where they hang. The process is methodical rather than quick, and most of the skill is in fabric identification and moisture control rather than in the cleaning itself.
We start by testing the fabric in a concealed area, usually inside the hem or behind the leading edge, to check colour fastness and how the fibre responds. Only then does anything else happen.
- Dry soil removal first, working the full drop including the hem and header.
- A hidden area test for colour fastness and fibre response.
- Application of a solution matched to the fabric, applied evenly and lightly.
- Gentle agitation to release soil from the weave.
- Controlled extraction so the fabric is left damp, never wet.
- The curtains are dressed back into their pleats while drying.
Which fabrics suit it
Most conventional curtain fabrics respond well: cotton, cotton blends, polyester, many jacquards and most standard linings. Heavy interlined curtains are often the best candidates precisely because taking them down is the riskiest option.
Silk, viscose and some loose weave linens need more caution. They can watermark, and viscose in particular loses strength when wet, which is the same behaviour that makes viscose rugs difficult. We test first and will say honestly if a fabric is not suitable for in situ work.
What it will and will not fix
In situ cleaning removes dust, airborne grease from kitchens, general dulling and a good deal of settled pollen. Colours lift noticeably and the fabric smells fresh again. Smoke odour usually improves substantially.
It does not repair sun damage. Where a leading edge has faded from years of direct light, that is dye loss in the fibre and no cleaning restores it. It also will not fix rotted linings, where the lining has degraded from heat and light and begins to shred, which is a replacement job.
- Fixes: dust, general dulling, cooking grease, pollen, stale odour.
- Improves: smoke smell, pet smell, light watermarks along the sill line.
- Cannot fix: sun fading, dye loss, perished linings, moth damage.
Drying and access on the day
Because moisture is controlled, curtains are usually dry within a few hours in a ventilated room. We ask that the windows can be opened and that there is space to work at the full drop, which sometimes means moving a sofa or a bed away from the window for the visit.
The room stays usable throughout. There is no wet floor and nothing is taken away, which is why this suits occupied homes, offices and places of worship where curtains cannot be missing for days.
Blinds, voiles and pelmets
Roman blinds can often be cleaned in place, with care around the rod pockets and cords. Vertical and roller blinds vary a great deal by material and are assessed individually. Voiles are usually better taken down and hand washed, since they are light and easy to rehang.
Pelmets and tie backs are worth doing at the same time. They collect the same dust and they sit right next to fabric that has just been cleaned, so the difference shows if they are left.