paint application rules

Today in the article we will talk about how to properly paint the facade of the house, what colors are better to use. We draw your attention to how to choose the paintwork material, how to properly apply it to the wall surface.

What paint to choose for facade decoration

We begin our story with a choice of facade paints, because in the modern building materials market this product is represented by a huge range. The first choice should be made on the basis of the material on which the paint will be applied. For example:

• If this is a concrete wall, then any paints , except are suitable for painting it vinyl and on a lime basis.

• A house built from a ceramic brick, you cannot decorate a vinyl or polysilicate paint.

• If the wall is painted with silicate brick, then it is best to paint it with silicate or polysilicate paints.

• Plastered surfaces (with cement plaster or lime) can only be made with silicate or polysilicate paints .

• If silicate plaster was used, that is, based on liquid glass, then there are no restrictions in applying paints, you can use any.

• If the plaster was made on organic resins , then the best option is silicone and acrylic paints.

In general, with plastered surfaces, everything is simple - what a plaster, such it is applied and paint. For example, if a plaster based on cement or lime was used, then mineral paint is applied to it.

An important moment is the pollution of the facades. This applies especially to those houses that are located on roads with heavy traffic. The best option is to buy paint with self-cleaning properties. That is, after applying it to the wall, a moisture-proof film is formed on the surface. Dust and dirt are washed away even by rain or washed with water under pressure. For example, from a hose connected to a tap.

This category of “self-cleaning” coatings includes acrylic, silicone and silicate materials. Please note that the latter must be modified with silicone polymer compositions. And one more thing, the more organic resins in the composition of the material, the higher its self-cleaning properties. Unfortunately, manufacturers do not indicate on the packaging how much of these resins are in the paint product.

The next selection criterion is paint, with which you can paint small cracks. If the width of the wall defect does not exceed 0.5 mm, then acrylic, acryl-silicone and polysilicate compositions can be used to cover it. But they must necessarily include additives from polymer fibers. Their number, the manufacturer must indicate on the packaging in the "composition". Such paints have a thick consistency. Today, manufacturers offer colorful materials, which include nanoparticles. They can also close the small flaws of the facade walls.

Next is the choice of the degree of protection against mold and mildew. There are no equal silicate models, but, firstly, they can be applied only on lime plasters or silicate bricks. Secondly, a very poor color palette.

Today, manufacturers offer acrylic paints, which contain antiseptics. This is also a good option. But there is a simpler technology so that no colonies of harmful microorganisms form on the walls. To do this, the front wall of the house should be treated with a primer, which includes antiseptic additives. And already on the treated surface can be applied to any facade paint.

Permeability

We have specifically selected this parameter in a separate chapter articles, because he is responsible for the quality of the walls of the house and the microclimate inside it. There are paints on the market that form a film on the surface that does not allow air to pass through. And there are those who pass the air. This is important because moisture comes out with the air. The absence of the last in the wall is a guarantee of its long-term operation.

Therefore, on the packaging manufacturers indicate this parameter is mandatory. But here everyone shows his version of the parameter. Here are three of them:

• How many grams of moisture or condensate can penetrate through 1 m² wall surface at during the day (24 hours).For example: 150 g / m² day. High vapor permeability , that is, it is good, not less than 130.

• Here, on the contrary, the parameter is given to the thickness of the air layer , which is equal to vapor permeability applied paint. Denoted by this factor - " Sd ". Here it is: the less it is, the higher the vapor permeability of the applied layer. Paints with high vapor permeability have Sd equal to 0.05-0.11.

• On some packages indicate the diffusion of water vapor . It is denoted by the letter " m ". For good colors, this coefficient will be equal to 1400-1500 .

And one more important moment. Today, a large number of vendors on the market offer the so-called insulating facade paint. Sometimes it is called liquid thermal insulation. We must pay tribute to advertising, which introduces into ignorance of many consumers and even sellers. No paint, even with a thick layer, can reduce heating costs. This is a lie.

Paint consumption on the facade

Painting the facade of a private house is primarily a monetary cost. And they depend primarily on how much paint material will be used to decorate the walls. Therefore, on the package you can always find the information you need. But manufacturers indicate this characteristic differently:

• Quantity , measured in liters or kilograms , by which covered 1 m² wall. That is, the unit of measure is: l / m ² or kg / m² .

• The area covered by the colorful composition using one liter material. That is - m² / l .

Usually the flow rate is indicated in a certain range. For example, 0.1-0.2 l / m². So the first indicator is if smooth, smooth walls are covered with paint. Second, if the wall is rough, textured or not primed. And at once one more nuance - front paints are applied in two layers.

Therefore, knowing all the parameters, you can easily calculate the required amount of paint and varnish material. For this you need:

• area of walls intended for painting , m²;

• material consumption , l / m²;

• two layers of coating , i.e. "2";

• the so-called safety factor - 1.1.

This multiplies and produces the required amount of paint to decorate the facade of the house.

The video specialist talks about how to choose the right facade paint:

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Technology of painting the facade

The high quality of the final result, and accordingly the long-term operation of painting, depends on how the foundation was prepared.

Preparing the wall for painting

First of all, the surface of the wall should be cleaned from dust and dirt. This is usually done with water pressure. Additionally, you can go with a brush, it will simply increase the quality of washing. Special attention to places that are covered with fungi, mold and moss. It will even require an iron brush, and it is better to dismantle the plaster layer to the material from which the house was erected.

If there are places of detachment of plaster, then it is recommended to get rid of them, and then tap the entire surface of the wall with a mallet or wooden hammer handle. A dull sound will confirm that there are voids in this place under the plaster. That is, the plaster is peeled off from the base. Such areas must be cleaned of plaster completely.

If these areas were also infected with mosses and mold, they must be treated with a primer, which includes antiseptic additives. And when the applied liquid dries, carry out repairs, that is, the delaminated areas are filled with plaster mortar and aligned in the plane of the wall. After the repaired areas have dried up, the entire area of ​​the wall is primed, preferably in two layers.

If it is necessary to paint the walls of a house that has just been erected, it doesn’t matter if the walls are plastered with it or it is just brickwork, they must be covered with a primer before painting. It is recommended to paint the brickwork as quickly as possible. Because after a certain time, vysola will appear on it, which will have to be removed before decorating.

A few words about the primer. Using it, you can:

• reduce the consumption of paint by reducing the absorbency of the wall ;

• water absorption decreases wall surface

• increases adhesive properties;

• reinforcement of the upper layer of the wall surface due to bonding between each other of the material particles.

On our site you can find contacts of construction companies that own full cycle of own production, provide services without prepayment , provide a loan or installments for the construction , and also take into account the funds of maternity capital . Directly to communicate with representatives, you can visit the exhibition of houses "Low-rise Country".

We add that the primer is usually chosen by the one recommended by the paint manufacturer. Today, a lot of companies producing paint products, and offer a primer. Usually, primers are colorless or cloudy milky. To increase the effect of the paint, it is necessary to add a pigment (color) to the primer that matches the palette with the color of the paint. Often, instead of the primer, the facade paint itself is used, which is simply diluted with water in proportions of 1: 1.

The better to apply paint on the facade

Here the choice is small - a brush, a roller and an airbrush. The choice itself will depend on the thickness of the paint, on the quality of the surface of the wall, on the qualifications of the worker performing the painting.

If the wall has a smooth surface, then you can use a roller or brush. The first tool is the optimal solution, because in this way the paint consumption is almost halved. Yes, and the process of applying it faster.

It is better to paint the brickwork with a brush with a length of bristles. The same applies to the facade with textured plaster. But the spray gun can paint any walls.

I would like to elaborate a bit on how to paint the facade of the house with a roller.

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Roller for painting

Let's start with foam rubber. Immediately make a reservation that it can not be used for painting facades. But for the primer is ideal.

Roller made of fur. This tool evenly distributes paintwork material, applying it with one thickness. Fur is also good if you need to paint the walls with embossed plaster. They are well closed minor defects of the wall: cracks, potholes, chips and other.

Roller with velor fur coat. This tool has exactly the same characteristics as the fur one. But we must give him his due, paint applied to the wall to go more evenly. In general, it is believed that this is a professional tool.

Thread Roller. It is better to use it if the priority is the speed of dyeing, and not high quality.

Now, about how long the pile should be.

• Rollers with a long pile are best used if there is a need to paint a textured wall.

• If the surface is smooth , then it is better to a medium length pile.

In the video, an expert tells you what to look for when choosing a paint roller:

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Painting the facade

So, everything is ready, you can paint the facade of the house. What you need to pay attention to:

• Paint the facade only at a temperature not lower than + 5С, if no rain and strong wind.

• Windows and doors are closed with plastic wrap.

• The first layer of paint is applied without long breaks . It is impossible to allow one part of the wall to already dry, and another part to it. At the junction there is a clearly defined border .

• The second layer is applied after a certain time. Usually this term manufacturer indicates on the package. Requirements for painting are the same as the first layer.

In the video, an expert shows how to paint the facade of a house with a high quality result, in which places a roller should be used, in which a brush, how to save time and so on:

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Conclusion on the topic

Painting of facades is one of the most popular options for decorating them.In addition, it is the cheapest, but at the same time with a huge variety of decorative filling. Of course, the best professional painters with this process is better not to cope. Therefore, our advice - use the services of masters. They will be able to guarantee the high quality of the final result.