Balcony algae treatment at Kanalhusene
A dull balcony covered in green algae became clean and inviting again in less than a day.
We treated and cleaned a wooden balcony of approx. 6 m² (range approx. 4-8 m²) at Kanalhusene in Aarhus Ø. The wood had turned grey, with algae growth and discolouration. We completed the work without sanding or oiling, leaving the surface visibly brighter and more even in less than a day.
- Location
- Kanalhusene, Aarhus Ø
- Service
- Algae treatment
- Surface area
- approx. 6 m²
- Duration
- less than 1 day (2-4 hours)
- Treatment
- Gentle algae treatment and cleaning of a wooden balcony
See the transformation


The task
Over time, the balcony decking had become dry and grey, with algae and surface discolouration. The lifeless-looking wood affected the appearance of the whole balcony. The customer wanted to refresh it without sanding or oiling.
The solution
- Gentle algae treatment adapted to the wood type
- Thorough rinse and light wash without the use of high pressure
- Care to preserve the wood's natural patina and grain
- Entire task completed in less than one day
The result
The surface became visibly brighter and more even, with the algae and discolouration removed. The balcony looked clean and inviting again, with the wood's natural grain preserved. The customer was very pleased with the result.
Vores altan var begyndt at se lidt trist og grøn ud, men efter algebehandlingen ser den ren og lækker ud igen. Det hele blev ordnet hurtigt og uden bøvl, og de var super nemme at snakke med. Vi er virkelig glade for resultatet!Katrine M., Aarhus Ø
Customer review, shown in the original Danish.
Read more about our algae treatment and paving cleaning, or see the guide on grey wooden decks and how to restore their colour.