Removing green algae with soda: pros, cons and alternatives
Soda is often used against green algae, but is that always a good idea? Read what soda does and what you need to watch out for.
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Removing green algae with soda is a popular method, because soda is a natural and biodegradable product. Still, besides the advantages there are also some important disadvantages you need to keep in mind.
Advantages and disadvantages of soda
Advantages
- Natural product
Soda is biodegradable and safe for the environment.
- Easy to find
Washing soda or baking soda is cheap and available in almost every store.
- Less harmful than chemical products
Soda does not contain aggressive cleaning agents, which makes it suitable for many surfaces.
Disadvantages
- Less effective against stubborn algae
Soda can fall short, especially with stubborn algae and moss.
- Risk of discoloration
With intensive use, soda can discolor light surfaces such as natural stone.
- Limited preventive effect
Soda removes existing algae, but does not offer long-lasting protection against new growth.
Osmo Terrasreiniger: a better alternative
For a thorough and long-lasting approach to green algae on wood, we recommend Osmo Terrasreiniger. This product has been specially developed to remove green algae, moss and other growth effectively without damaging the surface. The cleaner is suitable for untreated and oiled wood, such as decks, fences and garden furniture.
With Osmo Terrasreiniger you can clean your wooden deck, garden furniture and fences in an environmentally friendly way.
Video: Removing green algae with soda
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 with Osmo Terrasreiniger
Ready to get started? We are happy to help you on your way with a step-by-step plan.
Preparation
Clean the surface with a stiff broom. Remove dirt, leaves and moss so they do not interfere with the cleaning process. Pay extra attention to damp and shady spots, as that is where green algae usually appear most.
Mix Osmo Terrasreiniger
Mix Osmo Terrasreiniger with lukewarm water in a bucket. Adjust the ratio to the amount of soiling:
- Light green algae: mix 1 part cleaner with 25 parts water (1:25).
- Stubborn green algae: use a 1:1 ratio for extra cleaning power.
Apply the cleaner
Apply the mixture evenly with a brush or garden sprayer. Work in the direction of the wood grain. Let the mixture soak in for 10 to 15 minutes, but do not let it dry out.
Scrub thoroughly
Use a stiff brush to scrub the surface thoroughly. Pay extra attention to stubborn spots and green stains. If the surface is heavily soiled, you can repeat the treatment.
Rinse the surface
Rinse the surface thoroughly with clean water, for example with a garden hose. Do not use a pressure washer, to avoid damaging the surface. Damaged surfaces are more susceptible to new growth.
Check the result
Check whether all green algae have been removed. For stubborn growth you can carry out a second treatment if needed. Make sure the surface is completely dry before you move on to a follow-up treatment.
Benefits of Osmo Terrasreiniger
- Suitable for wooden surfaces
Untreated and oiled wood, such as decks, fences and garden furniture.
- Gentle on the top layer
Removes growth without affecting the surface.
- Biodegradable
An environmentally conscious solution for cleaning wood.
- Very economical
With 1 liter of cleaner you can clean up to 100 m² (about 1,075 sq ft), depending on the dilution.
Tips for lasting protection
- Clean your wooden deck or wooden garden furniture twice a year (spring and autumn).
- Make sure the surface gets enough sunlight and avoid standing water to limit new growth of algae and moss.
- Remove dirt and leaves regularly to keep the surface clean.
Frequently asked questions about removing green algae
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