In order to paint a new house or update the facade of an old one, it is not necessary to invite a team of professionals. It is enough to take a few correct steps and have the appropriate tool - and you can give beauty to the house yourself. This is designed to help facade paint for outdoor work. How to choose it and calculate the required amount, we will consider in this article.
Types of facade paints
In composition, facade paints are divided into two types: water-soluble (latex, acrylic) and based on organic solvents (oil, alkyd). In latex, most of it is water, and the liquid in oil paints consists of petroleum distillates and other organic solvents. There are also a number of environmentally friendly mineral paints that are made from lime and cement.
By the type of reflective surface formed, they are divided into matte, semi-gloss and shiny (glossy) paints. Everything in its composition contains a pigment additive, plasticizers and binders. Depending on the filler, water-soluble paints are divided into latex (based on acrylic resin), silicone (on silicone resins) and silicate (on "liquid glass").
Not only the walls of houses, but also other elements need care: fences, benches, fences. Facade paint is also suitable for staining them. The price for it is slightly higher than for the material for internal work, as it contains more resin (for moisture resistance and durability) and more pigment (for color) in its composition.
The choice of facade coatings
One of the main differences between paints for indoor and outdoor use is that the latter should be applied to a strictly defined type of surface.
The range of exterior surfaces includes materials such as lining, metal siding, wood, brick, concrete blocks, plaster and, of course, old paint. On many homes you can find a combination of these surfaces. For each such material, a specific facade paint is needed for exterior work. How to choose it correctly? After all, the material for outdoor work should be resistant to atmospheric influences, have long lightfastness and vapor tightness.
To avoid problems, old paint should be coated in the same way. But if there is no exact confidence in the type of the old layer, then it is safer to paint with alkyd-based pigment. In the ideal case, an obsolete or damaged paint layer needs to be removed, sanded, sanded and primed. Depending on the thickness of the paint, it is placed in one (thick) or two layers (more liquid).
Facade paint: technical specifications
| A type | Specifications | Features |
| Latex, Acrylic | Excesses are easily removed, durable, dry quickly, can be applied even on wet surfaces, are incompatible with the previous oil-based finish, and are elastic. Virtually no smell. Water-soluble, are used for processing wood, masonry, plaster and properly primed metal surfaces. | Do not dilute, with careful work you can get a uniform thin layer. Over time, do not crack. These are breathable paints that are resistant to fading in the sun. |
| Oil, alkyd | They dry very slowly (from 12 to 48 hours), smell strongly, are difficult to clean, but are durable and have good adhesion, especially on whitewashed surfaces. They are painted in one layer, cleaned with a solvent. Created on the basis of synthetic resin, they fit well on old multilayer alkyd coatings and chalk, have excellent hiding power. Do not paint galvanized iron and fresh masonry. | The thick consistency makes application more difficult, but this paint lays down better than latex. The coating must be protected from rain until it dries completely. In direct sunlight, the paint burns out, over time, it may crack due to oxidation. |
Get any shade? Easy!
A wide variety of colors, bright colors and muted shades, shine and dullness - the fulfillment of any desires. All this is a facade paint for outdoor work. Sales consultants will always advise how to choose a color for decoration, this is done using a special palette. This color range is provided for each specific type of paint. In the departments for the sale of coatings are special tinting machines, which by mixing various pigments will help to get the desired shade.
How much paint do you need
The consumption of facade paint is directly affected by the size of the surface to be painted, its condition, type of coating, age. For example, siding, tiles, masonry, or plastered walls may require 10-50 percent more paint than smooth flat walls. Also, twice as much consumption can occur when using airless spray guns that cover the surface in the equivalent of two layers of paint. High consumption requires paint on concrete because of the structure of the surface to be painted.
Calculation of the required volume
In order to calculate the consumption of facade paint for a house, it is necessary to calculate the area of the surface to be painted by multiplying the perimeter of the structure by the distance from the foundation to the cornice. Then, for each pediment, you should measure the distance from the cornice to the peak, multiply by the width from the middle to the wall. Multiply the resulting number by two, and divide the result by half. For greater clarity, the diagram is shown in the figure. From the resulting final figure, it is necessary to subtract the area of the door and window openings.
If the house has a siding trim, then another 10 percent must be added to the result. In case of painting a textured surface, an additional 20 percent is added to the consumption. Well, if the wall is porous (brick or plaster), then it can absorb 50 percent more paint. The paint on concrete will take a little less.
After calculating the required volume of material, you need to add another jar for insurance, especially when buying in advance, since then you may not find the right shade. The remaining paint can be used for other works.
Gloss Level Selection
The time has come when the calculation has been made and the facade paint for outdoor works has been selected. How to choose what is suitable: matte, shiny or half gloss?
Matte paint is widely used to cover the walls of houses. This is a porous layer, poorly hiding irregularities, so the surface should be well prepared for painting.
The choice of an ideal level of gloss is dictated by both aesthetic and practical considerations. From an aesthetic point of view, a glossy or shiny surface causes increased visual interest, although it is more suitable for indoor use. On the practical side, such a coating, due to its reflective ability, can hide minor surface imperfections, so it can be used to decorate facades and paint doors and windows. In care, the glossy layer is much simpler than the matte one, since it does not have a porous layer.
The third variety includes coatings that combine the properties of the other two - these are semi-gloss facade paints. Customer reviews say that these materials are in great demand because of their versatility.
Preparation for painting
Before painting, it is necessary to remove all external elements: flower pots, drawers, furniture, lamps. That which cannot be removed must be covered with a protective film. Next, prepare the surface: close the cracks, sand and clean from old layers, primed. After the primer has dried, you need to thoroughly mix the paint and you can begin to stain. For this operation, use rollers (for large areas) and brushes (for corners, decoration, relief and more).
Price for facade paints
In the domestic market of paints and varnishes is very popular and is represented by a wide range of "Tikkurila" - Finnish facade paint. The price of this product is in the high price range, but the excellent quality of the material justifies it.
Domestic paints are about three times cheaper than imported paints, the price of them is very different from different sellers. But this does not mean that they are of poor quality and not worthy of attention. If you need to save money, you need to read reviews and consult with specialists before buying.
In recent years, Russian paint of the Tikkurila Euro brand has gained popularity - a safe, eco-friendly material that is suitable for painting almost any surface. According to the technical characteristics, it is not inferior to that made by the Finns, but it costs much cheaper.