How to clean a PVC banner
Mild soap, a soft sponge and clean water: the safe way to wash a PVC banner, what never to use, stubborn marks, and cleaning mesh, boards and flags.
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How to clean a PVC banner is simple: lay it flat, wash it with lukewarm water and a little mild washing-up liquid on a soft sponge or cloth, rinse with clean water, and let it dry completely before rolling it up. No solvents, no scouring pads and no pressure washer. That removes most dirt without harming the print, and the same gentle approach works for mesh, rigid signs and flags with a few differences covered below.
Why gentle cleaning matters #
A printed banner has a thin layer of ink on the surface of the PVC. Strong chemicals can dissolve or dull that ink, abrasive pads scratch it, and a jet of high-pressure water can lift it at the edges or force water into the hems. The whole point of learning how to clean a PVC banner properly is to lift the dirt off the surface without rubbing the print away with it.
Our PVC banners are printed on 440gsm PVC, and our PVC-free banners on a 400gsm material. Treat both the same way.
What you need #
- A bucket of lukewarm water with a few drops of mild washing-up liquid.
- A soft sponge or microfibre cloth, and a soft brush for textured dirt.
- A second bucket or a hose on a gentle setting for rinsing.
- Clean towels, and a clean, smooth surface to lay the banner on.
Avoid: white spirit, thinners, acetone, bleach, household sprays with solvents, cream cleaners, scouring pads, stiff brushes and pressure washers.
How to clean a PVC banner step by step #
- Take it down if you can. Cleaning a banner flat on the ground is safer and gentler than scrubbing one still tied to a railing, and it stops dirty water running behind the ties.
- Brush off loose dirt. Sweep off dust, leaves and dried mud with a soft brush or dry cloth first, so you are not grinding grit into the print when you wash.
- Test a corner. Wipe a small area near the edge with your soapy water and check the cloth. If colour comes off, stop and use plain water only.
- Wash in sections. Work across the banner a section at a time with the soapy sponge, using light circular movements. Let the water do the work; do not scrub hard.
- Rinse well. Rinse each section with clean water so no soap film is left to attract dirt.
- Clean the back. Turn it over and wash the back too. Dirt on the back transfers to the print when the banner is rolled.
- Dry it completely. Pat it with towels and leave it flat or hanging in the shade until both sides are fully dry. Only then roll it, print side out.
How to clean a PVC banner with stubborn marks
- Bird droppings and tree sap: soften them first with a wet cloth laid on for a few minutes, then wipe away. Do not pick at them with a nail or blade.
- Black streaks from traffic: repeated gentle washing works better than one hard scrub.
- Mould spots on a banner stored damp: wash with mild soapy water and dry thoroughly in the fresh air. If the mould has stained the print, it may not come out completely.
- Marker pen, paint and graffiti: these usually need solvent that will also damage the print. Test any product on a hidden corner first and accept that a replacement may be the better answer.
Cable tie marks and creases #
Cable ties that were pulled very tight can leave dents or scuffs around the eyelets. Scuffs usually wipe off with the soapy water. Dents and light creases in PVC often relax if the banner is laid flat in a warm room for a day or two. Do not iron PVC or use a heat gun on it; direct heat can melt or distort it. To avoid tie marks next time, see our guide on how to hang a banner with even tension.
Mesh banners, rigid signs and flags #
Knowing how to clean a PVC banner covers most other materials too, with small changes:
| Material | How to clean it |
|---|---|
| Mesh banners (260gsm) | Same soapy water, but use a soft brush to reach into the open weave and rinse with a gentle hose. Mud along the bottom edge on site fencing comes off easily this way. |
| Foamex boards | Soft damp cloth only. Foamex has a softer surface that marks easily; a laminated finish (gloss or matt, chosen when you order) stands up to wiping better. |
| Dibond signs | Soft cloth and soapy water. The aluminium composite face is hard wearing, but the print on it still scratches under abrasive cleaners. |
| Correx boards | Soapy water and a sponge. Keep water out of the open flutes at the edges if you can, and dry the board before stacking. |
| Flags | Follow any care label on the flag. If there is none, a gentle hand wash in cool water with mild detergent is the safe choice. Do not tumble dry or iron the print; hang the flag to dry fully. |
Keeping cleaning to a minimum #
The easier routine is to stop dirt building up. Once you know how to clean a PVC banner, a quick wipe after each event and before it goes away takes minutes. Hang outdoor banners clear of the ground so rain does not splash mud up the bottom edge, and keep them away from trees that drip sap. Store them clean and dry; our guide on how to store banners has the details.
If you use a cleaning product stronger than washing-up liquid, read its label and handle it safely; the HSE explains the basics of working with hazardous substances (COSHH).
When cleaning is not enough #
A banner that has faded in strong sun, split at the eyelets or been stained beyond cleaning is ready to be replaced. Sun, wind and how firmly it was fixed all affect how long a banner looks its best. When you reorder, outdoor banners can be ordered with hemmed edges and metal eyelets for longer outdoor use. Before you throw the old one away, read can PVC banners be recycled for ways to reuse it.
