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Treatment and protection of facades

The surface of a facade (or a pinion), whether it presents materials that are not covered because they are decorative or, on the contrary, only a painted or non-painted plaster, is always the object of the attacks of humidity. On the sunless faces, cryptogammic agents develop and the most visible leave black and red streaks on these vertical surfaces. The presence of these parasites can quickly lead to the degradation of the walls they have colonized by cracks, infiltrations, swelling and swelling. It is therefore essential to carry out treatments that will restore the facades, their original appearance and protect them durably new attacks.

Necessary material

  • Sprayer
  • Putty gun
  • Scraper
  • Paint bucket
  • Mask
  • Glasses
  • Paint roller
  • Strong household gloves

Treatment and protection of facades: treatment

1. Before starting any treatment on a facade, it is recommended to check the condition. It is therefore necessary to auscultate the elements to identify the state of the joints, cracks, leaks, detachments or breaks in continuity. Treat these disorders with appropriate sealants or coatings before starting any treatment.

Treatment and protection of facades: protection

2. The treatment of a spotted facade of red or black streaks identified as cryptogam, moss or lichen, will be performed with an anti-foam to pass with a sprayer. Generally used pure, the product is at the same time preventive, curative and water-repellent. It offers excellent resistance to atmospheric agents and aging. Being microporous, it lets the support breathe and does not trap moisture in the walls. Totally translucent, the product is not film-forming and keeps the decorative facades, their natural appearance, without altering the colors.

Treatment and protection of facades: facade

3. In case of thick foams, it is recommended to scrape and brush the substrate before starting the spray. Work from the bottom to the top to avoid drips and get a regular look. Do not rinse but leave to act between 6 am and 5 days depending on the elements of the site and the density of the foams. A second spray can be performed in the case of particularly resistant species because encrusted for a long time.

Treatment and protection of facades: facade

4. A more complete product has been developed. It is a non-film forming water repellent, reinforced with broad spectrum fungicides. It allows, with the same product, both to treat greenings, mosses, lichens and fungi and to make these surfaces impermeable but nevertheless breathable because the product is microporous.

Treatment and protection of facades: protection

5. In the case of rough, non-decorative or unprotected walls such as blocks, it is essential to treat these surfaces. Their porosity is a refuge for moisture that allows them to thrive parasites.

Treatment and protection of facades: protection

6. On a rough block wall or a bare plaster, but treated water repellent, two layers of paint for facades can be applied if we want to give the wall a better appearance and add to its protection.

(photos / visuals: © Dip waterproof, except special mention)

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