All kinds of paintwork materials on sale today there is a huge amount. One of the most popular representatives of this variety is alkyd-urethane varnish. This tool is simply excellent performance and also has a very wide scope.
general description
Initially, builders used alkyd varnishes when carrying out repairs. As a basis for their manufacture, special resins obtained from linseed and wood oils were used. The composition of such funds also included fatty acids. Later, various kinds of polymer additives began to mix in alkyd varnishes, which significantly improved their operational characteristics. Today, when performing repair work, only such high-quality tools are mainly used. Many companies, both domestic and foreign, produce alkyd-urethane varnishes.
Benefits
The advantages of alkyd-urethane varnishes include:
- resistance to temperature extremes;
- ease of use;
- moisture resistance;
- lack of adhesive properties;
- aesthetic appearance of the formed film;
- resistance to mold and mildew.
Among other things, paintwork materials of this modified group are characterized by high abrasion resistance and a very long service life.
Cons of varnish
Of course, alkyd-urethane varnish has some disadvantages. These include, first of all:
- unpleasant odor;
- flammability.
The disadvantages of old alkyd varnishes, among other things, include a long drying time. It takes about 24 hours to wait for the film to harden completely. Alkyd-urethane varnishes of this minus are deprived. The toluene diisocyanate in their composition gives the resin an additional molecular weight. Therefore, the solvent from such products evaporates just instantly, and therefore, they dry much faster (6-16 hours). But urethane varnishes are also more expensive.
Varieties of use
Most often, this tool is used for painting wooden surfaces. There are only two main varieties of alkyd-urethane varnish:
- The yacht. They color the vessels above the level of the waterline.
- Parquet. It is used mainly for painting wooden floors.
Of course, both of these varieties can be used for processing any other wooden surfaces. Alkyd-urethane yacht varnish is more suitable for outdoor use. Very often, for example, it is used to process wooden arbors, verandas, and other small architectural forms. Parquet varnish is most often used indoors. In addition to floors, it is well suited for painting furniture, frames, railings, stairs, doors, etc.
The composition of such a varnish can be one or two components. The second variety is more expensive, but it also differs in greater wear resistance. Also, the funds of this group are classified into matte, semi-gloss and glossy. The first group of varnishes is mainly used on highly contaminated surfaces during operation. The fact is that the matte film is very easy to clean. Alkyd-urethane gloss varnish reflects a lot of light. Therefore, it is advisable to use it in dark rooms or on small elegant decor items.
Where else can the agent be used
In addition to wooden surfaces, alkyd-urethane varnishes can be used for painting metal and stone. Also, sometimes they are used for processing glass. However, before using this type of paintwork for painting surfaces of this type, you should read the instruction manual. Some brands of alkyd-urethane varnishes are intended for painting exclusively wood.
Manufacturers
The most popular among domestic owners of houses and apartments are alkyd-urethane products of such brands as:
- Parade;
- White house;
- "Boron".
Parade alkyd-urethane varnish is characterized by increased elasticity. The film formed by him does not crack with time and does not wear out for a long time. In addition, Parade products perfectly emphasize the natural structure of wood. This manufacturer produces alkyd-urethane varnishes intended for use both on the street and indoors.
The main advantage of White house brand products is their low cost and low odor. Like Parade, the coatings of this manufacturer are characterized by high wear resistance, dry quickly and preserve the natural color of wood. White house alkyd-urethane varnish can be used for painting any wooden surfaces outdoors or indoors.
Domestic funds "Bor" also have good performance characteristics. They dry out in just 4 hours. The film formed by them is resistant to the effects of any household cleaning products.
Processing technique
The yacht alkyd-urethane varnish is applied in exactly the same way as parquet, using the following technology:
- The surface is thoroughly cleaned of dust and dirt. If necessary, the old coating is removed from it.
- The wood is polished and leveled. Before staining the metal, it is necessary to remove the scale from it and clean off the rust.
- Alkyd-urethane varnish is applied to the surface with a roller, brush or spray gun.
- After the agent has completely dried, the surface is covered with its second layer (perpendicular to the first).
Use alkyd-urethane varnish is allowed at a temperature of +5 g. Before starting work, gloves and a respirator should be worn. If the varnish gets on the skin during staining, it must be immediately removed with warm water and soap. Spatter that appears on surrounding objects is easy to remove with white spirit.
Parquet alkyd-urethane varnish can be operated with exact observance of the technology of its application can 7-10 years. The same applies to the yacht variety of this tool. For comparison: the film formed by conventional varnishes intended for the treatment of wooden surfaces has to be renewed every 2-3 years.
What can be diluted
During long-term storage, alkyd-urethane varnishes can change the texture to a thicker one due to drying out. In this case, the product should be diluted with solvent before use. Manufacturers are advised to use the special SENTETIK TINER composition for this purpose. But it is allowed to breed alkyd-urethane varnishes and white spirit (imported).
Applying the final coat of paint with a diluted product is highly discouraged. Therefore, it is still advisable to use such a varnish immediately after purchase, preventing it from drying out.
Since alkyd-urethane varnish is quite expensive, some owners of apartments and houses recommend that new wooden surfaces be primed before use. This can significantly reduce the cost of funds. In this case, as a primer, you can use the varnish itself, diluted with water in a proportion of 4x1.
Alkyd-urethane varnish: consumer reviews
In quality, this modern product with polymer additives is significantly superior to many others. And therefore, reviews about it are mostly only good. The advantages of such varnishes, among other things, include ease of use and a long service life. Many owners of apartments and houses also note the fact that when using this type of paintwork, mold or moss never appears on the tree. Also, these varnishes are praised for the fact that after their application, the surfaces acquire a very presentable beautiful appearance.
How much are varnishes
Since the funds in this group are of good quality, the price is usually quite high. So, varnishes Parade cost about 1300 rubles for 2.5 liters. For a can of White House of the same volume, you will have to pay about 750-800 rubles. Alkyd-urethane varnish “Bor” costs about 900-1000 rubles. for 2.5 liters.