How do you get rid of green algae on a balcony?

For a wooden balcony, use a dedicated cleaner such as Osmo Terrasreiniger. We advise against products such as cleaning vinegar, as repeated use can damage the surface.

How do you clean a concrete balcony?

Clean a concrete balcony with a cleaner that is suitable for stone and concrete. Osmo Terrasreiniger is intended for wood only. Use a sturdy brush, such as the Osmo Terrasborstel, and rinse thoroughly.

How do you make your balcony clean and green?

For a clean and attractive balcony with a natural look, you can add wooden garden furniture and plants. Make sure there is good water drainage to prevent green algae.

What is the best way to remove green algae?

The best approach is a combination of regular cleaning, an effective cleaner such as Osmo Terrasreiniger and a protective follow-up treatment with Osmo Terras-Olie or Osmo Steen en Terracotta Olie.

How do I remove green growth from my balcony?

Use a stiff brush and a suitable cleaner such as Osmo Terrasreiniger. Make sure the surface dries properly after cleaning to prevent new green algae.

Removing green algae from a balcony: handy tips and step-by-step plan

Green algae on a balcony can be slippery and dangerous. Read how to remove it safely.

Roof terrace with wooden decking, lounger and plants

What you need for this tutorial;

Struggling with green algae on your balcony? This problem is caused by moisture, little sunlight and splashing water. As a result, algae and moss can settle on tiles, wooden boards and concrete, making your balcony slippery and untidy.

With Osmo Terrasreiniger you can easily remove green algae from a wooden balcony without damaging the wood. This special cleaner works deep into the dirt and leaves your balcony clean. Follow the step-by-step plan below to make your balcony look like new again!

Video: Removing green algae from a balcony

In this video you will see how to remove green algae from wood.

Groene aanslag verwijderen: hoe verwijder ik groene aanslag?

Step-by-step plan: removing green algae from your balcony

Ready to remove the green algae from your balcony? Here is a handy step-by-step plan so you can get started right away.

Remove loose dirt

Start by clearing your balcony. Remove furniture, plants and other obstacles so you have enough room to work. Sweep the balcony with a broom to remove loose leaves, sand and dirt.

Choose the right cleaner

Fill a bucket with warm water and add Osmo Terrasreiniger. The ratio depends on how dirty the surface is:

Light growth: mix 1 part Terrasreiniger with 25 parts water.
Heavy growth: mix 1 part Terrasreiniger with 1 part water.

Stir the mixture well.

Apply the cleaner

Use an Osmo Terrasborstel with a telescopic handle to apply the cleaning mixture to the balcony in the direction of the wood grain. Let the product work for a few minutes, but do not let it dry.

Scrub and rinse

Scrub stubborn spots with the deck brush. Then rinse the balcony thoroughly with clean water. Use a garden hose or a watering can, but avoid using a pressure washer, as it can damage the surface.

Let it dry and enjoy your clean balcony

Let the balcony dry completely. Then put your furniture and plants back and enjoy a clean, fresh balcony.

Follow-up treatment: protection against new growth

Want your balcony to stay clean for longer? Treat the surface with the right protective coat after cleaning:

For wooden balconies: use Osmo Terras-Olie to saturate the wood and reduce moisture absorption.

For stone and tiles: apply Osmo Steen en Terracotta Olie to give dirt and moisture less of a chance.

Note: only treat a completely dry surface for the best result!

Benefits of Osmo Terrasreiniger

Clean a wooden balcony with Osmo Terrasreiniger. Osmo Terrasreiniger has been specially developed to remove green algae from wooden balconies, decks and other outdoor wooden surfaces. This product is:

Ideal for periodic cleaning

Removes dirt and growth quickly and effectively.

Deep-acting cleaning power

Works into the pores of the wood

High coverage

1 liter of Terrasreiniger is enough for 30 to 100 m².

Easy to use

Mix it with water and scrub the surface clean.

Gentle on wood

Does not damage the material when used correctly.

Supplies

In addition to these products, you will also need a bucket of water.

Color examples

After cleaning and treating your balcony, its natural look is preserved. Osmo Terras-Olie helps wooden boards keep their warm tones, while Osmo Steen en Terracotta Olie preserves the original color of tiles and concrete.

Terras-Olie: for horizontal wooden surfaces

Maintenance advice

Keep your balcony clean easily by sweeping it regularly and scrubbing it with warm water. Use Osmo Terrasreiniger 2 to 4 times a year for a deeper clean. Avoid aggressive cleaners such as chlorine and pressure washers, as they can damage the protective coat.