How to refresh house render?

Facade renovation is a procedure you need to perform once every few years. Render, wooden or stone cladding – all other different materials get dirty and damaged, so at some point, instead of decorating residential buildings, they start to disfigure them. Check out how to renovate your house render!

Why do facades become dirty?

Various factors influence the dirtiness of the facade, while one of the main ones is the building location. Buildings near a busy or unpaved road, forests, or bodies of water are more prone to staining and physical damage.

The type of material used for our render finish is also a crucial factor. Most often outdoor walls are finished with porous render, which faster settles dirt and is more difficult to remove without using an appropriate cleaning agent.

How to renovate an exterior render?

Rendering or cladding is one of the most common methods of finishing the building facade, so it is important to consider how to take care of the exterior render.

Washing the render

In most cases, it could be enough to refresh the render. For this purpose, we can use a fungicide and algicide, which contains high-quality biocides, penetrates the substrate and protects and preserves the substrate. Washing the facade regularly will help avoid renovations and keep the house looking aesthetically for longer.

Removal of algae and algae

Facade renovation in this regard will be necessary if such efflorescence appears at all. Indeed, a better solution is to prevent the development of green infestations, using a special preparation. It is also worth knowing that some facade renders, such as silicone renders, are characterized by increased resistance to the appearance of algae and algae.

Exterior painting

When washing fails, the appropriate step in the exterior render’s renovation is painting. You can achieve a fresh look of wall or choose a new render to give your home a whole new character.

Render repair

Sometimes, it may be necessary to repair defects in the render. It includes all kinds of cracks, scratches, or dents, but the most important thing is to deal with the damage that extends to the building insulation.

How to fix small cracks in exterior walls?

If it turns out that small cracks – microcracks – have formed on the surface of the house render, and the remaining layers are in good condition, then the outdoor wall’s repair will not be very complicated. It is best to measure the thickness of the cracks with a crack gauge (it does not exceed 0.5 mm). Then, we prime the surface with a special crack-filling primer. We can do it with a paint roller. Such a primer, reinforced with fibers, will cover the cracks and fill even the slightest damage to the facade. Then, after drying, we can paint the wall with paint adapted to the render type.

How to fill large cracks in a wall?

What about when the cracks are more than 0.5 mm thick? If the texture layer – render, or possibly the reinforced layer of the facade – is damaged, then the arsenal of measures needs to be strengthened.

After washing and drying the wall, you still need to remove all the loose render fragments. We can’t always see them¬†with the unaided eye, so it’s worth carefully cleaning the cracks with a spatula. Then, using a toothed trowel, apply adhesive mortar, sink a fiberglass mesh into it and trowel the whole thing with the same mortar. The next step is to prime the substrate, and when the surface thus prepared dries, we can apply decorative render.

More damage and defects are worth removing in spring and summer, not only because it is the construction season. The point is also to prevent moisture from penetrating deep into the plaster in autumn and winter, which leads to rapid deterioration of the facade.

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