Timely facade renovation to prevent algae and fungus infestation

If you are a homeowner, you can certainly sing a song about it: Especially in our part of the world, algae and fungus infestation often causes ugly discoloration and spoils the outer walls. The once beautiful look of the house is gone. But what can you do about it? Ask MVM - we will help you to renovate your facade.

Infestation with algae and fungi - how it comes about

In many parts of the world, algae and fungus infestation is not an issue. These pests have little chance of spreading, especially in Mediterranean or hot climates. Above all, they need moisture, light and air to feel good. Our climes with their rainy, foggy autumn months and cold, wet winters are ideal for this. The microorganisms find good conditions here. They spread and attach themselves to facades. The whole thing is favored if the house is on a body of water or is densely covered with plants. Under these conditions, algae and fungi enter into a symbiosis. The resulting greenish to brown spots are annoying. However, you do not need to be afraid to have the substance of your outer walls. The algae and fungus infestation only stick to the surface. 

Algae and fungus infestation - renovate the facade without full thermal insulation

If you are renovating your facade, please bear in mind that conventional full thermal insulation is not optimal with regard to infestation with algae and fungi. Although it does not only occur on fully insulated walls, it is on them that it is observed most frequently. The cause is quickly explained: Due to the thermal insulation, the internal temperature does not penetrate outside. The surface of the facade remains cool and condensation water is more difficult to dry off.

Protective measures against algae and fungal attack

In order to protect your external walls from algae and fungus infestation or to renovate the facade, the following methods are possible:

1. Prevent algae and fungus infestation with biocides

Biocides are chemicals or microorganisms that are commonly used to control pests. As a measure to prevent fungus and algae, you can apply these agents prophylactically. Be aware, however, that they are potentially dangerous to humans, animals and the environment. In addition, rain can wash them out over time.

You better try to renovate and protect the facade with this alternative.

2. Hydroactive, two-layer facade coating

To do this, apply a mineral coating to a biocide-free capillary-active plaster layer. This protective layer binds moisture briefly. Without forming dew drops, it then releases them back into the environment.

Renovate the facade in the event of extensive algae and fungus infestation

Do you want to free the house wall from a large-scale infestation and the Then renovate the facade, it is best to discuss this with an MVM specialist. He will look at the damage on site and make you an offer free of charge. If you agree, we first remove the infestation with a steam or high-pressure jet that is compatible with the material. To this end, we work together with the SPZ AG, which specializes in blasting work. We then disinfect your facade, prime it and apply an algae and fungus-repellent top coat. Both (primer and top coat) are of course compatible with the substrate.

Conclusion

Algae and fungus infestation on the house wall is not a pretty sight. The best way to do this is to ask an expert at MVM AG how you can remove it and renovate the facade. Please do not wait too long to avoid being left with a major damage later. Take it now Contact contact us and arrange a free consultation!

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