Green film on stone
Shaded terraces turn green over the season. Algae, moss, lichen — looks harmless, turns slippery when wet. Falls happen exactly there.
We clean terraces, stairs, cobblestones, concrete and ground-floor façades with professional Kärcher gear. Pressure tuned to the material. Step by step. Rust and oil we deliberately don't take on — there are specialists with more time for that.
Shaded terraces turn green over the season. Algae, moss, lichen — looks harmless, turns slippery when wet. Falls happen exactly there.
Outdoor stairs collect everything: road salt in winter, pollen in spring, soil from shoes all year. Step by step the stone darkens.
Ground-floor façades, plinth areas, porches: airborne soot, pollen, cobwebs in corners. What looks different from move-in day — usually dirt, not age.
Over the years rain washes out the joint sand and weeds grow through. High pressure exposes it — the re-jointing itself is construction work, someone else does that.
Large areas get the rotating attachment. Stairs we do step by step by hand — no attachment reaches there. Façade low down with reduced pressure, because plaster is sensitive.
Rotating Kärcher attachment for terrace, forecourt, driveway. Even result, no streaks, clearly faster than a spot jet.
On stairs the surface cleaner doesn't fit. There we work manually with a targeted jet. Takes longer, but every edge gets clean.
Plinth, ground-floor walls, porches: targeted jet at reduced pressure. Plaster must not chip — so we test first on an inconspicuous spot.
Stone by stone. Step by step. Clean again.
Concrete takes a different pressure than natural stone. Sandstone different from granite. When in doubt, test on a corner first, then the whole surface.
Kärcher with the right bar pressure and nozzle. Too much pressure erodes — that wouldn't be cleaning any more, that would be damage.
Large surfaces get the rotating attachment. Stairs, edges and corners we go over by hand with a spot jet — otherwise dirt rings remain.
Each step: top, front, edge. Road-salt residue sits exactly where the shoe lands. More work — but that's the job.
Water plus dissolved dirt has to go — not into joints, not under door thresholds, not onto the neighbour's property. We rinse off in a controlled way.
What stays we tell you on site. No sugar-coating. If jointing clearly needs redoing — we say so, but we don't do it ourselves.
You get in touch with surface, material and condition. A photo via WhatsApp helps us give a first estimate.
On site we check material, access, water connection and drainage. Fixed price in writing, honestly priced.
High pressure tuned to the material, surface cleaner for large areas, spot treatment for stains. If something can't be solved, we tell you on site.
Contact us for a non-binding audit. Within 24 hours you receive a tailored analysis of your property.
“No bot. No hold queue.”