Everything you wanted to know about laser cleaning

Laser cleaning is a dry, contact-free way to strip dirt and coatings off a surface using a focused beam of light. The beam delivers short, intense pulses of energy. The contamination on top - rust, paint or grime - soaks up that energy, heats up in a fraction of a second and lifts away as vapour or fine particles. The base material sits underneath untouched, because it reflects the beam or needs far more energy to react. The result is a clean surface with no scrubbing, no abrasive grit and no solvents.

Laser ablation is the physical effect behind the whole process. It is the moment a thin layer of material absorbs the laser pulse and is removed from the surface, either by vaporising or by being thrown off as tiny fragments. In laser cleaning we tune the parameters so that ablation only affects the unwanted layer and stops right at the original surface. That control is what makes the method so selective.

Most professional cleaning is done with a pulsed fibre laser. Fibre lasers are reliable, energy efficient and easy to move between job sites. The pulsed mode matters a lot: instead of a constant beam, the laser fires very short bursts of light. Each pulse removes a sliver of contamination and then stops before heat can build up in the base material. By changing pulse length, power and scan speed we adapt the same machine to delicate stone or to heavy industrial rust.

Very precise. The beam can be focused down to a small spot and steered with great accuracy, so we can clean a defined area and leave everything around it as it was. When the settings are dialled in correctly, the laser takes off a coating layer by layer and stops at the surface below. That is why the method is trusted on historical monuments, detailed restoration work and sensitive components where a rougher technique would cause damage.

The list is long. Laser cleaning handles rust and corrosion, oxide and mill scale, old paint, lacquer and other coatings, glue and adhesive residue, oil, grease and production films, soot and fire damage, mould, surface discolouration and light limescale. It also strips release agents and oxidation from welds. In short, if something sits on top of a surface and you want it gone without touching the material underneath, laser cleaning is usually a strong option.

Yes, laser rust removal is one of the most common jobs we do. The beam targets the iron oxide and lifts it off without grinding into the healthy metal. There is no grit to clean up afterwards and no risk of warping thin sheet from aggressive mechanical work. On finer parts the laser can take the rust back to bare, sound metal that is ready for inspection, welding or a fresh coating.

It can. Laser paint removal works by heating the coating until it breaks its bond with the surface and flakes away. You can take a part down to bare substrate, or stop at an intermediate layer if only the top coat needs to go. Because there is no chemical stripper involved, there is no hazardous sludge to dispose of and the surface stays dry and ready for the next step.

Yes. Laser oxide removal and descaling are a natural fit for the technology. The beam clears mill scale, heat scale and oxide films from steel and other metals, which is exactly what you need before welding, coating or quality checks. The surface is left clean and dry, with the base metal intact and no abrasive residue trapped in the texture.

It can, and it is a popular choice for it. Laser weld cleaning removes the dark oxidation and discolouration that appear next to a weld seam, especially on stainless steel. The seam comes out bright and even, the corrosion resistance of the steel is restored, and there is no acid pickling paste to handle or neutralise.

Yes. The laser heats and destroys mould growth and the staining it leaves behind, which makes it a clean option for mould remediation on surfaces such as wood, stone and masonry. Because the process is dry, you do not add moisture back into a material that already had a damp problem. We always pair this work with proper extraction so spores are captured rather than spread around.

It can. Laser graffiti removal lifts spray paint off facades, stone and metal without the high pressure water, harsh chemicals or sandblasting that often leave a shadow or scour the surface. The beam targets the paint and leaves the material beneath it, which is a real advantage on historic or textured stonework.

Yes, this is one of its strongest industrial uses. Laser surface preparation removes oxide, oil, old paint and other films so the next process has a clean, sound surface to bond to. A welded joint is stronger on properly cleaned metal, and paint, powder coating or adhesive holds far better. The whole step is dry and leaves no grit behind to contaminate the result.

Yes. Soot, smoke staining and charred surface layers respond very well to laser ablation, on materials including brick, concrete, stone and wood. Because the process is dry and non-abrasive, it removes the visible fire damage without scrubbing pigment deeper into porous masonry or eroding the surface - which matters when the structure is being kept rather than rebuilt.

Laser cleaning works across a wide range of materials. On metals it suits steel, stainless steel, aluminium, copper, brass and titanium. On mineral surfaces it handles natural stone, concrete, brick and plaster. Laser cleaning of wood is also possible, and so is work on composites such as carbon and glass fibre. Each material gets its own set of parameters, so the same machine moves from a tough steel structure to a delicate stone carving with only a settings change.

Not when the parameters are set correctly. The beam is tuned so it only has enough energy to lift the dirt or coating, not to mark the material below. On wood the grain, patina and any veneer are kept; on artwork and restoration pieces the original surface is preserved while only the soiling is removed. Sensitive items like electronic boards can be cleaned too, with low power settings and careful testing. We always run a small test patch first so you can see the result before we treat the whole piece.

Yes. On stainless steel the right settings clean the surface while keeping the passive layer that gives the steel its corrosion resistance. That makes the method a good fit for food production and pharmaceutical environments, where it can be matched to hygiene and GMP requirements. The process is dry and adds no chemicals, so there is nothing extra to rinse off afterwards.

Sandblasting throws a stream of abrasive grit at the surface. It works, but it creates dust and spent media that have to be collected and disposed of, and it can leave the original material covered in fine scratches. Laser cleaning uses a beam of light instead of grit. There is no abrasive, no water and no chemical solvent, the process is far more precise, and you can clean a defined spot without touching the area next to it. For most jobs that means a cleaner site, less rework and a better finish.

Dry ice blasting is gentler than sand but still needs a steady supply of dry ice pellets and a compressor, and it struggles with firmly bonded rust or coatings. Chemical cleaning is effective but produces hazardous waste, calls for protective handling and often needs rinsing and drying afterwards. Laser cleaning needs no consumable media and no chemicals, leaves the surface dry, and gives you tight control over how much is removed. It usually wins on running cost and on the amount of waste left behind.

Yes. We run every job to a SUVA compliant safety plan. That includes a Class 4 laser enclosure or curtain, warning lights, a marked and restricted work zone, and full personal protective equipment for the operators, including laser safety eyewear. The safety setup is part of how we plan the job, not an afterthought.

You can see the technology in action during a short test area, from a safe distance and with protective eyewear we provide. Once the main work starts, the treatment zone has to be cordoned off and only the trained operators stay inside it, because a Class 4 laser requires a controlled area. We are happy to walk you through the results at each stage.

For work on private property you normally do not. If the job is in a public space, for example a facade on a street or a listed building, there can be local permit requirements. We take care of arranging the site permissions and the laser safety zone, so this is handled for you rather than left on your desk.

Depending on what is being removed, the process can release particles or vapour. Old paint, coatings and similar layers in particular need to be captured properly. We use a mobile extraction unit with HEPA filtration that pulls the emissions away right at the point of work, so the air around the job stays clean and the residue is collected for correct disposal.

We keep the process simple. First, a short consultation where we discuss the surface, the contamination and your goal. Second, a sample test on a small area so you can see the result and we can lock in the right parameters. Third, a clear, project specific quote. Fourth, the cleaning itself, carried out on a scheduled date. Fifth, a handover with documentation, including process notes and before and after photos when you need them.

Both options are available. Our equipment is fully mobile, so for most jobs we bring the laser to you anywhere in Switzerland. Mobile laser cleaning suits facades, structures, machinery and anything that cannot easily be moved. For smaller items it can be simpler to bring the parts to our workshop. We will recommend whichever route is more practical for your project.

Yes. Industrial laser cleaning is a core part of our service. We work with manufacturing plants, workshops and maintenance teams on tasks such as descaling, weld cleaning, mould and tooling cleaning, paint removal and surface preparation before coating. The work can be done on your site and scheduled around your production so downtime stays low.

It depends on the surface area, the type and thickness of the contamination and how accessible the surface is. A small part can be finished in well under an hour, while a large facade or a heavily corroded structure may take a full day or more. Once we have seen the job or run a sample test, we can give you a realistic time estimate alongside the quote.

Yes. We can come to your site in Switzerland and run a free demonstration on your own surface. It is the clearest way to see how well laser cleaning performs on your specific material and contamination before you commit to the full job.

There is no single fixed rate, because the laser cleaning price depends on the job. The main factors are the type and amount of contamination, the surface area, how easy the surface is to reach and how precise the result needs to be. To keep the laser cleaning cost fair and accurate we look at the project first, then give you a transparent, project specific quote with no hidden extras.

In many cases it is, once you look at the full picture. There is no abrasive or chemical media to buy and dispose of, very little waste to handle, and no rework to repair a substrate damaged by aggressive cleaning. Setup and clean up are quick because the process is dry. On recurring industrial work especially, those savings add up and often make laser cleaning the more economical choice.

Yes. It uses no solvents, no chemicals and no abrasive grit, so there is no chemical sludge or spent media to send away as waste. The only material removed is the contamination itself, which is captured by the extraction system. Because the process is gentle on the base material, parts and structures last longer instead of being worn down by repeated harsh cleaning.

Yes. The way we work is in line with Swiss environmental standards. Airborne particles and vapour are captured at source by HEPA filtered extraction, and the collected residue is disposed of correctly. Since the process avoids solvents and abrasives in the first place, it keeps the environmental footprint of the job low.