Example of facade renovation project by Leroy Merlin.
- 1 Peeling or poor condition of the support, the facade needs to be renewed every 15 years and allows the house to keep a nice appearance. Before you jump into the work, take advice from pro to renovate your facade!
Peeling or poor condition of the support, the facade needs to be renewed every 15 years and allows the house to keep a nice appearance. Before you jump into the work, take advice from pro to renovate your facade!
The facade is the first bulwark of the house facing the mud, humidity, pollution, etc. Over time, it gets tired and deep, with greater or lesser speed. Approximately every 10 years, a first cleaning of the facade will update the status of the holder. Small cracks or foam are a sign of a need of renovation. To realize oneself or done by a professional, renovation of the facade requires some discipline and knowledge, as is often the work of a home. Using Stephanie Desplechin products Painting Manager at Leroy Merlin and Hélène Heintz, facade renovation product manager at St. GobainWeber, discover the steps and the indications given to renovate a facade in the rules of art.
1. Recognize a shabby facade
Although there are many kinds of facade, with their own characteristics, some signs are identical in all media. "The foam on a facade is a sign of deterioration and humidity"Warns Stéphanie Desplechin, Product Painting at Leroy Merlin. When the facade is covered with paint, it may disintegrate, flour and wear over time. "The exterior paint with a lifetime limited in time, there may be areas where the paint peels off the wall below"Says Stéphanie Desplechin.
Another sign, more worryingly, the crack demand some attention. It may cause infiltration problems in the coating. "Between 0 and 2 mm, a crack can be treated with a waterproof coating, said Hélène Heintz, facade renovation product manager at Saint-Gobain Weber. Beyond 2 mm, it is estimated that the crack requires more careful repair: bridge, patching mortar". More important work and professional intervention are then expected.
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2. Preparing the front of the renovated
"Cleaning the front is more or less light according to the state of the support, said Hélène Heintz. The idea is to make it clean and healthy support before applying a coating or paint." The first step is to unclog the facade and wash thoroughly. "Using a high-pressure cleaner or a brush and a water jet, remove any imperfections (mud, pollution, etc). Loose material must be removed"Says Stéphanie Desplechin.
Once the clean surface, imperfections or disorders may appear, such as rising damp or cracks. These are the sign of a building in motion and should be be treated and stabilized before proceeding with the installation of a new façade cladding.
Think also of the application (highly recommended by professionals), an anti-foam or water repellent by following to the letter the manufacturer. "Few owners think about buying in the renovation of the facade, but the anti-foam really protects against moisture and infiltration, defends Stéphanie Desplechin. The facade needs this protection to have a tougher time with painting."
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3. Check with the mayor's paperwork
Like all outdoor work, the renovation of the facade request a consultation with the council. Before choosing the material or the color of your new facade, ask for specific conditions stipulated by the PLU (local development plan) or POS (Plan land use) of your place of residence. "In some municipalities, colors are recommended or required for the facade"Says Stéphanie Desplechin. Some rules are specific to each city or town. A DP (Prior declaration) then sufficient in most cases before the implementation of the work.
Also remember to inquire about the formalities for the installation of scaffolding. "If the house is located next to a historic building, a permit may be needed"Warns Stéphanie Desplechin.
The large choice of color.
4. Determine the existing facade of my carrier
Step often overlooked key to the renovation of the facade, it is important to know what this support on the front panel to choose its future material. At the risk of having a coating that does not adhere. "The choice of coating for the renovation of the facade will depend on the existing support, supports Hélène Heintz. If one is a little curious, we will put the question to the former owners when buying the house. If one is a bit technical, we try to determine the coating on the front with clues. For example, whether the carrier is organic or inorganic, one approach a flame near the front. If it is an organic material, the support softens. With an inorganic material, no."
The organic paint, consisting usually of a synthetic resin and known for its waterproof qualities, can be applied on a wall already covered with an inorganic paint, composed of natural elements such as lime. But the reverse is not possible. "The mineral paint will not adhere to a facade covered with organic paint, says Hélène Heintz. The paint will not do its grip."
5. Select the type of coating for my facade
Above the base material such as stone, brick or concrete, plaster protects the house, the uniform and can determine its style. He chooses carefully, taking into account the already present support. "The main idea for the renovation of the facade is to respect and support the house, Helen recommends Heintz. The Wall regulates gas exchange, respiration good pledge for habitation." The coating selected also contributes to the comfort inside the home.
Side composition, you have the choice between a coated organic or inorganic material. "There are many types of coatings, says Hélène Heintz. The mineral coatings, thin or thick coatings, organo inorganic or organic mineral plasters ... better respect the old building of the house. Some arise by using a trowel or brush, such as whitewash. There are also deployable products, rather reserved for professionals equipped with a machine. Organic coatings are generally applied with a trowel and also offer several types of finish. The choice of technique will depend on the desired result."
The renovation of the facade often requires a new paint finish. "A new paint is applied with different rolls for different styles made, said Stéphanie Desplechin. For example, to render smooth, thoroughly mix the paint. Start by painting the corners and corners with a brush. Then apply the paint handsomely without dilution up and down and crossing passes. The last transition is made without reloading the roller, painting from top to bottom. Be vigilant, an outdoor pan is painted in one go to prevent spotting."
Embodiment Weber Saint-Gobain