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WHICH PRODUCTS TO CHOOSE TO CLEAN THE EXTERIOR WALLS OF YOUR HOUSE?

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Are the exterior walls of your house dirty? It’s time to clean up, but not with just any product! MaisonSûr explains the different products and techniques used to clean your walls as well as the importance of a water-repellent facade treatment .

A FACADE THAT BLACKENS, THE DIFFERENT POSSIBLE CAUSES

The presence of black streaks or streaks on your exterior walls indicates that they have blackened. The blackening of the exterior walls of the facade of your house can have different origins.

Pollution is the most common cause, especially if your property is located in an urban area . Indeed, the exhaust pipes of vehicles (cars, scooters, motorcycles, buses) cause the blackening of your facade .

Humidity and rain are natural causes that promote the development of microorganisms (moss, lichens, fungus) on the exterior walls of your home. The presence of trees or plants near the walls also promotes the development of algae .

PRODUCTS FOR CLEANING THE EXTERIOR WALLS OF YOUR HOME

In order to clean the exterior walls of your home, there are several products and different possible techniques.SODA CRYSTALS

They have the appearance of white grains and are obtained from the mixture of salt and chalk . You can dilute 1 coffee cup of crystals in 1 litre of hot water then, using a push broom, clean your walls . Soda crystals are safe for the vegetation in your garden. However, this type of manual cleaning requires time and significant physical effort .

FACADE HYDROGUMMING

It is a mixture of sand and water that is projected at low pressure on the facade of a house. The nature of the powder depends on the material that constitutes your facade. This technique eliminates black stains while limiting the production of dust . However, hydrogumming can fade the colour of your walls and cause halos on the facade.

THE HIGH PRESSURE CLEANER

The high pressure cleaner (NHP) is used to strip the walls and eradicate the moss, algae and dirt present on the surfaces. The use of this tool requires good technical skills in order not to damage the facade cladding.

BLEACH, A PRODUCT TO AVOID

Although very inexpensive, bleach is a product that should be avoided at all costs when cleaning the exterior walls of your home. Indeed, this product is dangerous and causes the death of plants and plants that are located near your facades. In addition, bleach is not biodegradable and will damage the surface of your walls .

DON’T FORGET THE FACADE WATER REPELLENT!

Simply cleaning the exterior walls is not enough to protect them against external aggressions in the long term. In order to ensure good protection and watertightness , it is recommended to carry out Water repellent (or facade paint) is a product that has anti-pollution properties , which lets surfaces breathe and protects them against the risk of cracks . 

A facade treatment with water repellent also makes it possible to ensure good sealing of the latter. Indeed, this waterproofing and colourless product will prevent the penetration of water into the walls while letting them breathe.

Thus, the application of this treatment has many advantages:

Fight against the appearance of moulds , mosses and lichens,

Protect walls against atmospheric pollution,

Avoid detachment of the facade covering material ,

Preserve the aesthetics of the facade.

Choosing the right product and the appropriate technique for cleaning the exterior walls of your home is essential in order not to damage the coating of your walls and to preserve the plants and plants in your garden. Cleaning is not enough to protect your facade in the long term, it is therefore recommended to carry out a water-repellent treatment for optimal waterproofing.