Roof and facade cleaning and coating in Northern Germany, Sweden and Denmark

Our work starts where weather leaves its mark on a house. On roofs we remove moss, algae and lichen, and on worn concrete or clay tiles we apply a protective roof coating that closes the surface and gives the roof a fresh, even colour. On facades we remove green growth and dirt streaks from render and brick, and we recoat exterior walls with breathable, algae-inhibiting paint systems.

Alongside this core work we clean natural stone, paving, driveways and patios, and we offer sealing (impregnation) for porous surfaces so that water and dirt soak in less quickly. Each service has its own page with details on method, suitable materials and limits:

We are based in Germany, so work in Sweden and Denmark is organised differently from a job around the corner. Our team travels from Rostock by ferry – to Trelleborg for southern Sweden or to Gedser for Denmark – and works on site for the duration of the job. These are planned assignments, scheduled in advance together with you, not same-week call-outs.

The first step is always photos. Send us pictures of the roof or facade via WhatsApp or email: the whole surface, a few close-ups of the tiles or render, and the area around the house. Tell us roughly where the property is located. From the photos we can usually say whether the job suits our services and what it is likely to involve.

If it does, we agree the next steps with you – whether an on-site visit is needed before a written quote, and which time window works for travel and weather. You receive a written quote before any work begins, and the job ends with a joint handover. We communicate with you in English or German throughout; we do not speak Swedish or Danish.

Houses along the Baltic coast deal with the same conditions on both sides of the water: high humidity, frequent rain, wind and long, damp winters. Surfaces that stay wet for long periods are ideal for algae and moss. North-facing roof slopes, shaded walls under trees and houses near the sea or lakes are usually affected first.

Growth is more than a cosmetic problem. Moss holds water like a sponge, and when that water freezes in the pores of a tile, repeated frost cycles can make the surface flake. Thick moss cushions can also block the overlaps between tiles and clog gutters. On facades, algae keep render damp, and insulated walls are particularly prone because their thin render cools quickly at night and collects condensation.

Regular cleaning and, where the surface is already worn, a suitable coating slow this process down considerably. They do not replace repairs: broken tiles, a leaking roof or damp rising from the ground need a roofer or another specialist first – and we tell you openly when that is the case.

We concentrate on roofs and facades instead of offering everything. That focus shows in how we work: we match the pressure to the material, use low pressure on sensitive surfaces and remove moss by hand where a jet would do damage. Coatings are only applied to clean, dry and sound surfaces, because preparation decides how long the result lasts.

CTN Oberflächen-Design is entered in the German register of craft businesses (Handwerksrolle) and works with Brillux as its partner for paints and coatings. Our customers rate us 5.0 stars on Google (as of October 2026). You receive a written quote that lists the work in clear terms before anything starts.

We would rather advise against a job than sell something that will not last. If your roof needs a roofer rather than a coating, or your facade only needs cleaning instead of paint, you will hear that from us – in plain English or German.