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Guide

Cleaning and Maintaining Coated Graphics

A liquid laminate gives a print a washable surface, but how that surface is cleaned decides how long it keeps looking right. Gentle, regular cleaning with the right cloth and cleaner protects the coating; harsh products and scrubbing can wear it away. This guide sets out a sensible care routine for coated graphics indoors, outdoors and on vehicles.

Which Finish Resists Cleaning Chemicals Best?

Wait for full cure before the first clean

A coating can feel dry well before it reaches its final resistance. Water-based liquid laminates need enough drying and curing time before they are packed, installed or wiped, and temperature, airflow, humidity and coating thickness all affect how long that takes. UV-curable coatings cure under the lamp, but only if lamp output, line speed and coat weight are right.

Putting a newly coated graphic into a demanding cleaning routine too soon can cause failures that are really down to incomplete cure. Check the product data sheet for cure guidance and pass it on to whoever is installing or maintaining the work. Our guide to drying and curing liquid laminates explains the difference in more detail.

A basic routine that suits most coated prints

Landor’s own FAQ recommends a simple starting point for liquid-laminated graphics:

  • Use a soft cloth or sponge dipped in warm water with a mild detergent.
  • For a canvas print, plain water should usually be enough.
  • Where more is needed, diluted alcohol or a surface cleaner can be used.
  • Test a small, discreet area first to check the cleaner suits the surface.
  • Avoid stronger chemicals. Cleaning products made for babies tend to work well because they are so mild.

Wipe with light, even pressure rather than scrubbing. Abrasive pads and heavy rubbing can damage the liquid lamination and leave the surface more porous, so that dirt builds up more easily afterwards.

Clean regularly, especially outdoors

All printed and coated graphics benefit from regular cleaning. Dirt left to build up over time can work its way into the surface, just as it does with film laminates. This matters most for exterior signs, hoardings and vehicle graphics, which collect road film, pollution and weather residue.

For vehicles and fleet livery, avoid aggressive car washes. A gentle hand wash with a mild cleaner is kinder to the coating than high-pressure brushes. Pay attention to edges, seams and cut-outs, where cleaning fluid can collect, and avoid leaving liquid pooled at joins.

Disinfectants and high-touch areas

In clinics, schools, gyms and public venues, coated graphics may be disinfected many times a day. “Disinfectant” covers a wide range of chemistries, including alcohol-based products, quaternary ammonium compounds, hydrogen peroxide and chlorine-based cleaners, and they do not all affect coatings in the same way. Concentration, contact time and cleaning frequency all change the outcome.

  • Use the disinfectant at the manufacturer’s stated dilution and contact time.
  • Apply it to a clean, soft cloth where the protocol allows, rather than soaking the graphic.
  • Do not mix cleaning chemicals.
  • If a stronger product is introduced later, check compatibility again before it becomes routine.

Anti-microbial coatings such as ColourShield Safetouch do not replace routine cleaning. Landor’s anti-microbial coatings are tested to ISO 22196, but chemical resistance and anti-microbial performance are separate properties. See Do coatings resist disinfectants? for what to check before specifying.

Finish makes a difference to care

Gloss, satin and matt describe how a surface looks, not how chemically resistant it is, but they do change how cleaning shows. Landor notes that its gloss liquid laminates give the best abrasion resistance, satin still gives good abrasion resistance with less glare, and matt may show some abrasion marks while still preserving the print.

Matt surfaces deserve the gentlest treatment. Aggressive scrubbing can burnish a low-sheen finish, leaving a polished patch even when the coating itself is intact. Wallpaper Matt and other low-sheen coatings are designed to give a wipe-clean surface, so a soft cloth and a light touch are usually all that is needed. For more on choosing between finishes, see gloss, satin or matt.

Write the care instructions down

Vague advice such as “wipe clean” is a common cause of damage. When you hand over a coated job, give the facilities or cleaning team a short written note that states:

  • the approved cleaning method and cloth type;
  • the cleaner and its dilution;
  • any chemicals or tools to avoid, such as scouring pads, solvents or abrasive powders;
  • how long after installation the first clean can take place.

A clear note protects the client’s investment and gives the cleaning team a surface they can maintain with confidence.

FAQs

Questions we’re often asked

Start with a soft cloth or sponge and warm water with a mild detergent. Test a small area first and avoid strong chemicals and abrasive scrubbing. For canvas, water alone is usually enough.

Landor advises avoiding aggressive car washes. Regular, gentle hand washing helps stop dirt building up without wearing the coating.

Heavy rubbing can burnish a low-sheen surface. Use lighter pressure and a soft, non-abrasive cloth, and make sure cleaning staff know that matt finishes need a gentle touch.

No. An anti-microbial coating is designed to support hygiene, not replace routine cleaning. Keep to the site’s normal cleaning protocol.

Talk to us or get your next project started

Call +44 1252 624411 or email info@liquid-lamination.co.uk for advice, samples and pricing.