Overview of the marching of the dirt-repellent facade paints: the properties and functions of the material, silicone self-cleaning compositions, the principle of operation.
Definition and resistance to oblique rain. Apply at t not lower than 5 s
System"
The silicone paint Lotusan with the "lotus effect" is used to protect new and old structures, in the systems of facade insulation. It is applied to all types of mineral bases, polymer and silicate foundations, any plaster
Silicone soil Putsgrund (Beckers) - designed for soft sandy plasters. The average operating period of coating, 20 years, even in the conditions of adverse effects of air containing salts, chemical reagents, dirt
When a tinting of facade paints, you should choose the dyes particularly resistant to UV radiation that have a special labeling
Dirt, dust, acid rains destroy the substrate and create conditions for the development of microorganisms in cracks and on the surface of the facades, which leads to biological damage
Due to neglect of considerations of practicality in favor of beauty and style painted walls are often exposed to strong atmospheric influences
High permeability for water vapor and carbon dioxide
"Self-cleaning, or dirt-repellent, facade paints" ... it sounds tempting. What is actually hiding behind this new term? High-tech compositions that give the surfaces of the walls a pronounced property of water and dirt rejection, like never a lotus wedge leaves, or a thin marketing calculation?
Opinion of a specialist
With a reasonable approach to separate the advertified products from really high-tech is not so difficult. Self-cleaning silicone or silicone modified acrylate facade paints will regularly perform their functions only subject to certain conditions that, however, will help extend the service life of any paint.
First, by the time of staining, the house should survive the heating season. After all, immediately after the construction of the building, the water content in the brickwork is 20-25%, while the regulatory humidity at which you can start to color, 5% (by SNU). Capance of heating water in the form of a pair begins to go out. Adlay of the enclosing structure with a density of 1.7-2T / m3 Even extra 10% humidity is 17 buckets of water! And no matter how good and vapor permeable, neither the facade paint - it will certainly cover with bubbles and squeeze. In addition, it is advisable to finish plastering inside the house, since due to them, the moisture content in the walls is also increasing.
Secondly, the roof of the building should be good, with sufficient sink, and the scene and the base-made with such a calculation so that the splashes do not fall into painted walls during the rain. No matter how you convince you that all pollution from walls covered with self-cleaning paints are easy to flush, the constant exposure to water will very quickly destroy the thin film of the colorful layer, the thickness of which is 200-300 mk.
Konstantin Prasolov,
Leading Specialist CJSC "Finnkolor", Concern Tikkurila
Water stone sticks
What can threaten stone facades? The main destroying factors for them are water, water vapor and chemical corrosion. Water penetrates inside the design at atmospheric precipitation, and water vapors are formed as a result of human life: cooking, taking baths IT.P. The temperature differences, and, consequently, periodic freezing and thawing water in the pores of the material, as well as a masonry composition reduce the strength of the walls, lead to the formation of microcracks and gradual destruction. The increased moisture content of the supporting structure increases the heat loss of the building (especially in winter), contributes to the formation of microorganisms, fungi and mold.Obviously, high-quality facade paints must have hydrophobic properties in order to prevent moisture penetration inside the stone walls, but at the same time do not prevent her out out in the form of steam. No less important coating resistance to ultraviolet radiation and an aggressive chemical environment. It is they who cause the process of aging paint, which is expressed in the color change and the "challenge" of the surface (the appearance of a white laid). The same exquisite mountaineering or well-kept English lawn is unlikely to organically look at the house with the plane irradiated on the walls. The accumulated facade will increase the image attractiveness of the building. Therefore, it is quite clear to the owner's desire to acquire paint, capable of not only to protect and decorate his victob, but also to keep these qualities as long as possible.
Opinion of a specialist
The ability to self-charge to one degree or another possess all silicone paints. Water droplets do not spread through the plane painted with them, but rolled through it, taking with them particles of dust and dirt, not having a clutch with a colorful layer. It should not be forgotten that the quality and beauty of the facade coating is 80% dependent on the proper surface preparation and only 20% - from the paint itself. Video Mineral base should be purified from dust, fat and previous paintwork materials. In one case, if it is not possible to completely consider the old coating, you need to make the surface with a homogeneous and be sure to progress.
A typical error is the use of inexpensive domestic moisture insulators as soil. These materials are indispensable when finishing the walls and floors of bathrooms, pools, but on the stone facades their use is unacceptable. They block the output of vapors from the inside. The moisture remaining in the walls gradually tears them and destroys or accumulates under the colorful layer, which leads to the formation of bubbles and disruption of the integrity of the coating. There will be no problems if under the paint with high vapor permeability pick up a soil with a similar property.
Sergey Polev,
Executive Director of ZERO RUSSIA
Colorful Likbez
It would seem that the task is clear - it remains only to go to the store and choose a suitable product. However, here the potential buyer faces an abundance of strangers: acrylic, acrylate, siloxane, silicone, dispersion, water-emulsion paints, and immediately lost. In fact, everything is not so difficult. Paints or paint materials consist of several main parts.
Binders. These are solid or liquid polymers whose task is to associate all components of paint and ensure its adhesion with the substrate.
Pigments and fillers. The first are crushed dyes and are responsible for shelterness and color, the second adjust the viscosity, hardness, shine, and also give paint certain physicomechanical and chemical properties.
Solvents. They dissolve binders and at the same time reduce the viscosity of the composition.
Additives. Their small amount improves the various properties of paints and varnishes.
Most often, the name of the paint depends on the type of binder. For example, silicone resins perform in silicone in this role, in silicate-liquid potash glass. A binder, which represents small emulsion particles of the polymer in water, is called dispersion, and paints such as dispersion. It is they who are included in the list of the most sought-after processing of mineral surfaces, due to the high quality, efficiency and environmental purity.
Alligator.
Important properties of facade paints: a - protection of the surface from fungi and greens; b - high C2-permeability required for curing the basics with a high content of lime and giving strength to the base; B - high vapor permeability, allowing moisture easy to evaporate.
We are looking for a benefit
Each facade paint independently of the composition should regularly perform its functions, that is, being an atmospheric and heat-resistant, immune to UV radiation, steam-resistant, elastic. Avota is how long it will save useful and decorative properties - depends on several factors: competent surface preparation, knowledge of applying and qualifying masters, paint quality.Some are ready to buy cheap compositions and every 2-3 years to update the cracked paint, following the well-known saying of builders: "I passed the object on" excellent "- left without work." Others are engaged in this issue. Hanging: acquire expensive materials and hire professionals as a result. Receiving beautiful, reliably protected walls remaining unchanged for at least a decade. It is this approach that turns out to be more economically more profitable, because the aggregate cost of periodicals for repainting the facade is quite quickly overlapsing and without that considerable initial investments. It is especially noticeable for the example of two- and Three-storey houses where additional costs for vertical "transport" are required.
For paints, designed to serve for a long time, in addition to others, the properties of dirt-repelle or self-cleaning are becoming important.
Opinion of a specialist
Silicone paints, including self-cleaning, is a high-tech quality product. They are easy to use, harmless and can serve 15-20 years old, with proper preparing the foundation. Their properties largely ensures silicone resin, which does not give to form a solid film on the wall surface. The layer of paint is a plurality of small scheels separated by micropores, thus coating becomes hydrophobic. Water in liquid state can not pass through the pores, and in the form of a pair easily penetrates through the protective colorful layer.
These materials are ideally suited for lime plasters, old weakened bases or brick surfaces. But, let's say, the house from concrete blocks is not worse than protecting acrylic paints. They have as low water absorption and very democratic at the price. Of course, if, after several years after processing, compare the facades of buildings covered with the composition with the "lotus effect" and paint that does not have such a property, the first will undoubtedly be cleaner, and therefore more attractive. But this does not mean that there will be no contaminants at all.
Andrei Schukin,
Lead Technical Specialist MEFFERT Representative Office
Lotus effect
In nature, a phenomenon characteristic of lotus leaves is noticed: they never wet. After the rain or complete immersion in the water, their surface is dry and clean. Water forms drop-balls on it, which roll out, removing foreign particles on the sheet. This principle, many firms as the development of innovative paints with self-cleaning effects.
It is worth noting that the unequivocal recognition of such properties by specialists from companies offering paints and varnishes. Some consider it by ordinary advertising statements, others adhere to the opinions that targeted work on the creation of materials with special qualities. The pod of the consumer, it would be quite good to paint a country house once, and then rejoice at his age, looking at his bright and clean facade. But miracles does not happen. However, the fact that the dirt-repellent compositions simplify the process of cleaning facades cannot but rejoice. After all, if you have a dilemma - to wash the house or repaint, the solution is quite obvious.
Scheme of self-cleaning facade coatings: A- Organic and inorganic dirt settles on the walls; Basin light activates special pigments that are cleaned by organic dirt particles; Unable to secure the mud and rain on the surface of the microparticles.
The largest group of self-cleaning paints form silicone. They have high strength, elasticity, good hydrophobic properties and vapor permeability, are resistant to alkalis. These compositions are suitable for various mineral surfaces, with the exception of concrete, are compatible with almost all facade paints. In our market, self-cleaning silicone paints represent ATLAS (Poland), Caparol, Haering (TM Baucolor), MEFFERT, STO AG, ZERO (all Germany), Tikkurila (Finland).
Silicate facade paints are distinguished by high vapor permeability, but less pronounced hydrophobicity. Due to the low plasticity, it is desirable to apply to a stable, not subject to shrinkage, on which they form a protective layer extremely resistant to mechanical damage. These compositions are used on various mineral surfaces, but once using, only silicate or silicone paint can be updated (without complete purification). Self-cleaning silicate paint releases Alligator (Germany).
Opinion of a specialist
To make the facades are beautiful, you need an optimal combination of protection and cleansing functions. Most leading manufacturers of paints and varnishes work on the creation of durable coatings, paying special attention to the problems of reducing their "sensitivity" to pollution. The specialists of our company abandoned the use of thermo- or hydroplastic components in the recipe of such paints and plasters. Due to this, high temperature and humidity do not cause softening or swelling of the coating, and the particles of the dirt are not glued to its surface. Another cleansing mechanism is based on the use of photocatalysis principles. Sunlight activates special pigments optimized on nanotechnology. Under the action of UV rays, the energy absorbed by them is released and splits organic particles of dirt. Destroyed microparticles are not held on the surface of the walls and are easily removed by the wind and rain.
Sergey Shibayev,
Technical Director of Kaparol
It should be remembered that various types of paints and soils may be incompatible with each other. Exclude unpleasant surprises will help the purchase of all the necessary materials (soil, paint, solvent, clarifying additives) of one company or brand.
Paints with self-cleaning property
| Manufacturer (country) | Name | Consumption, l / m2 | Packing volume, l | price, rub. |
|---|---|---|---|---|
| Alligator (Germany) | Kieselit-fusion | 0,3. | 12.5 | 6212. |
| Atlas (Poland) | Atlas Arkol N. | 0.15-0.25 | 10 | 2100-3700 |
| Beckers (Sweden) | Putsfrg. | 0.13-0.2 | 10 | 4500. |
| Caparol (Germany) | Amphisilan-Plus. | 0.15-0,2 | 2.5 / 5/10 | 857/1495/2960 |
| Haering (Germany) TM Baucolor | Unisil. | 0.22. | fifteen | 4800. |
| MEFFERT (Germany) | Perlosan D110 | 0.15 | 10 | 2800. |
| STO AG (Germany) | Lotusan. | 0.2-0.4 | 12.5 | 4350. |
| Teknos (Finland) | Siloksan. | 0.16-0.25 | 10/20 | 3000/5660. |
| Tikkurila (Finland) | Kivisil. | 0.16-0.25 | nine | 3470. |
| Zero (Germany) | Renotop. | 0.12. | 2.5 / 12.5 | 1000/4655 |
The editors thanks the company "Design Intercrass", "Cayman", "Kaparol", "Tykkurila", "Templesystem", Zero Russia, MEFFERT representation for help in preparing the material.