What is fungi on my roofing?

What is fungi on my roofing?

The black or green spots, which sometimes appear on the tiles of a house’s roofing, are nothing more than fungi and algae, i.e microorganisms, that grow on the porous surface of the tiles.

The reason that fungi appear has to do with the presence of fungal agents in the atmosphere (fungus seeds) and the natural structure of the tiles as they have pores in which the fungus grows.

Resources, however, are essential and are a quality element that makes clay tiles stand out from all other roofing materials. With their porous structure, the tiles breathe, naturally emitting water vapor, balancing the humidity of the house and contributing to the creation of a pleasant micro-climate, under the roof. In addition, by absorbing moisture at night and evaporating by day during the summer months, they achieve a natural cooling of the tiled roof.

Therefore, tile pores are something we need, and it is wrong to prefer tiles and materials that do not breathe.

Gikas Roofing Roofers in New Jersey, thanks to the careful selection of the materials they choose, have an ideal porosity that, while providing all the benefits of perspiration and evaporation of moisture, is particularly resistant to the appearance of fungi.

However, due to their physical structure, and under the influence of aggravating exogenous factors such as:

  • continuous shading of the roof,
  • environment with developed vegetation,
  • high moisture content of the area, etc.,

Fungi might appear on the tile roof

This is something that the owner should not worry about in the first place, as on the one hand, apart from the aesthetics, it does not affect the quality of the tiles (in fact, there are several owners and architects looking for tiles that have fungus spots on their surface, to achieve an aged result), on the other hand is something that is very easy to deal with.

As these spots are fungi, we can apply a special anti-fungal – anti-mold medicine to the tiles with a cooler, which can be obtained from stores of building materials and paints (there are many companies that have similar medicines on the market).

Depending on the mode of action of each drug, the fungus that has developed is killed within 1-2 days, and then removed even with rainwater, or with a light rinse, where it will clean the tile in depth. In case of pressure flushing, care must be taken not to cause the tiles to move / break due to excessive water pressure.

The high strength (the largest in the domestic market) and the excellent application of the tiles, allow the execution of these works on the roof even by a non-specialist, without the fear of causing damage to the roof, as long as proper attention is paid.

In fact, there are materials on the market that have a protective effect, as after eradicating the fungus, they retain their anti-fungal properties by protecting the tiles for some more years.

In any case, we suggest not to use and not to prefer roof materials that while advertised as protection against mold and fungi, in fact contain sealing materials, which clog the pores and make the tile not breathable, while they can even cause damage long-term (sealing the pores of the tiles in any way, e.g painting, varnishing, etc., should be avoided and is a violation of the terms of the warranty).

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