The surface of the homemade parquet or laminate, wooden furniture or even concrete from time to time is exposed to different strength tests. Whether it is spilled tea or coffee, acute dishes and other items that harm expensive coating. Qualitative and reliable protection in this case is capable of providing a varnish on a polyurethane basis, which is easily applied, quickly dries and has high strength.
Content
Description of material
Fashion on the tree is returned and gaining by former popularity. Wood products are practical, convenient for processing and spectacular, from aesthetic point of view. Paul from the parquet board emphasizes the nobility of the interior, it continues to be used as owners of country houses and residents of the metropolis. However, the tree has its drawbacks, such as high susceptibility: to moisture, technical and chemical fluids, as well as changing climatic conditions.
You can minimize unpleasant consequences using high-quality coverage, and in this case we are talking about polyurethane varnish for wood. It is easy to apply for any details of absolutely different forms, it forms a solid, glossy protective film.
In order for wood not destroyed under mechanical and atmospheric influence, parquet lacquer on a polyurethane basis is able to provide not only warranty strength, but also easy to care for the parquet board.
Anhydrous varnish is better and stronger sticks to the surface and at the same time is resistant to the effects of chemicals. It is best to use such a varnish in rooms with constant movements by sex and the use of aggressive cleansing drugs.
Concrete and other mineral surfaces deeply absorb polyurethane varnish, and it makes them stronger. The sealing of surfaces occurs, their strength to blow and wear increases.
The use of varnish is the final stage of the finishing work process. In the construction industry there is a huge number of mixtures forming a film. They are mainly of polymers with water or solvent and resin. Among the spectrum of different means on an oil, alkyd and epoxy basis, polyurethane varnish can be bought almost in any building materials store.
A feature of polyurethane varnish is its ability to create a protective layer with high resistance to any damage, high and low temperatures, solar rays and moisture. Due to its elasticity on the floor, such a coating does not allow the appearance of deformations and cracks. Taking into account numerous advantages and features, there is a polyurethane varnish relatively inexpensive, its price for 5 liters begins from 3,500 rubles.
Purpose Polyurethane Purpose
Polyurethane lacquer, as a rule, is used for such purposes:
- to protect the surfaces of the floor, walls, ceilings, various wooden products from mechanical and chemical damage;
- for impregnation of concrete, brick, slate, tiles and to create a transparent film;
- has the property of a wet stone;
- it is used indoors, under hinged structures;
- polyurethane varnish for concrete and stone are used as the main protection of materials from rust on residential, administrative buildings, warehouses, industrial workshops and decorative products.
If it is necessary to protect mineral materials from corrosion, this type of coating is used.
Types of polyurethane varnishes
By type of manifestation on the surface, this coating is divided into:
- glossy;
- semi-men;
- matte;
- half-one
By the number of components:
- single-component varnishes. Form simultaneously solid, but elastic film. This coating should not be additionally prepared and mixed with the solvent before operation;
- polyurethane lacquer is a two-component and consists of a thickener and the foundation, which among themselves must be combined before applying. A special stirring device is averaged for 15 minutes until the mixture becomes homogeneous and air bubbles will disappear. Two-component are divided into: aqueous, based on synthetic oily resin and based on formaldehyde resin.
Additionally, the varnishes are also: self-leveling and no.
Advantages and disadvantages
The advantages of varnish on a polyurethane basis:
- With proper application, the varnish is not peeled from any surfaces and even sticks well to the metal.
- Covers wooden products of the most complex configurations without forming cracks.
- Wear-resistant.
- Protects surfaces from the effects of natural, mineral and synthetic oils.
- Easy to apply.
- Applies additional aesthetic attractiveness with decorative products.
- After complete drying does not have odors.
- Is a durable coating.
- In its composition does not contain organic solvents.
Disadvantages of varnish on a polyurethane basis:
- It is not recommended to apply for the cover of children's furniture, in particular the bed.
- Over time, the coating turns yellow.
- In the open state, only about 8 hours is suitable. Then dries out.
Technology of Polyurethane Laca
Before the procedure for coating a wooden surface, prepare it with a proper way:
- skill and clean out of contamination. If necessary, treat synthetic impregnation, which will prevent the further appearance of fungus and mold;
- apply a varnish with brush, roller or sprayer. It is important that the tool you use moved along the tree fibers. If you use a two-component varnish, then mix it strictly as indicated in the instructions. Otherwise, the composition will be either too viscous, or liquid, which will significantly slow down the process of sinking or, on the contrary, the lacquer hardens in the process of work;
- polyurethane varnish for the floor. Apply a minimum of two layers. By giving dry the first layer, inhibit it using sandpaper. Then apply the second layer. The finishing coating should dry for 8 hours.
The use of water-based polyurethane varnish
The peculiarity of such a coating is that on the surface it looks absolutely colorless and transparent. In this case, the natural beauty of the tree or stone is only additionally emphasized. It is also important that the aqueous polyurethane varnish does not give wood of yellowness, it does not cause allergic manifestations, and not toxic. Wire resistance of water-based varnish is slightly lower than ordinary varnish coatings. However, the film dries very quickly and besides, it has fire protection properties.
In order for the film as quickly as possible on the surface being processed, the varnish should be applied in several layers. At the same time, only the coating time is taken into account. To dry the film in 3 layers will be longer than usual. The frequency of application of each layer is 2-3 hours.
It is better to work with a polyurethane varnish at ambient temperature in 20-23 C. Unwanted temperature + 13 and + 30 S. But in high humidity conditions, the film will dry longer. Perfect environmental humidity - 55-60%.
Polyurethane lacquer
Very often, the floor with a bulk surface can be seen in the pool, in any storage room, a medical institution, and so on. The advantage of the bulk sex is not only an attractive appearance, but also a long service life, increased resistance to various loads, ease of care, smooth and high-quality coating.
Polyurethane floor can be both glossy and matte. It is remarkably withstanding temperature fluctuations, vibrations, loads and moisture.
When applying a liquid polyurethane coating, such rules should be followed:
- The treated surface must be dried, degreased and clean from dust. Otherwise, the coating will feel bad.
- If after applying a varnish on its surface accidentally hit the garbage, do not despair and regret the work done. After drying the floor, it is enough to lose this place with sandpaper.
- The mixture solidifies very quickly, so it is necessary to work with liquid floors.
- Fresh coating may have an unpleasant chemical smell, but after a couple of hours it will completely disappear.
Tips when working with polyurethane varnish:
- Specialists recommend thoroughly clean the surfaces from dirt and fat thoroughly before starting work, otherwise the coating simply does not fall on a dirty surface.
- So that the varnish does not froze in the process of work, it should be stirred and shaking the container with a mixture.
- It is necessary to apply the coating with a thin layer. And it is better to make it better and faster with the paint sprayer.
- In order not to spoil the expensive furniture or the product, to start, test the polyurethane varnish on any other surface.
- When purchasing a polyurethane two-component varnish, it is necessary to take into account the class of its strength. This indicator is usually specified on the package. For use in the apartment, lacquer with a normal load is suitable, and, for example, in cinemas, shopping centers and gyms it is better to use a means with an increased load.
