To make a house outwardly beautiful and at the same time durable, a varnish for bricks will help - a universal tool for solving the problem of preserving masonry walls and the aesthetic appeal of a building.
The properties
To process brick walls with varnish began relatively recently. Previously, few asked themselves the question of whether it is worth covering the walls of the house with additional protection. Today we can safely say: it is necessary. Lacquered brick retains its properties for much longer, and the building itself does not require repair for a long time. The walls, not treated with varnish, do not look so beautiful, and the service life of such a brick is much lower.
Even well-made masonry eventually loses its properties and crumbles. This is due to climatic conditions existing in our country. Temperature changes, wind and high humidity in the autumn-winter period lead to the gradual destruction of bricks and cement.
What is varnish for?
Brick, which is varnished, is more resistant to climate change:
- varnish protects against moisture;
- masonry, mixing with the components of the varnish, becomes more durable;
- the brick is resistant to chemical influences (solvents);
- Does not change color under the sun;
- resistant to both low and high temperatures;
- It looks aesthetically more beautiful;
- not susceptible to infection by fungi and mold;
- repels dirt.
Depending on the chosen varnish, the walls can be matte, glossy or with the effect of wet stone.
The advantages of varnishing brick
LKM (paints and varnishes) for brick is currently the most widely used. All thanks to their properties. They can be used outside the house and inside it for processing vertical, horizontal and inclined surfaces. In its own way, LKM for brick is universal - it is not only widely used, but also does not cause difficulties in application. Also, it does not roll and does not deform.
Under the influence of moisture, a brick that has not been varnished quickly loses its properties and begins to collapse. This affects mainly the walls outside the house. Using the varnish for bricks, you can several times reduce the negative impact of snow, rain, hail on the facade of the house, thereby extending the life of the brick, and avoid overhauling the walls.
Another noticeable advantage of the varnish coating of bricks is its resistance to high temperatures. This is especially noticeable on fireplaces and masonry stoves. Heat-resistant brick varnish is used to cover them.
A fireplace or stove treated with varnish takes on a completely different look and looks very beautiful.
Varnish is also able to protect the house from the appearance of stains of salt and dust. Having processed the facade of the house or the fence with varnish for bricks, you can be one hundred percent sure of their protection from such untidy phenomena as salt, dust and fungus.
The variety of coatings is very wide. Varnishes with enhanced shine will effectively emphasize the facade of the house against the background of other buildings or simply make it look like a tower from a fairy tale. Walls treated with varnish look very impressive.
disadvantages
There is only one drawback in coating LKM walls - the toxicity of varnish. During its application, it is always necessary to protect the respiratory tract from exposure to harmful fumes. After drying, it becomes completely harmless.
Types and classification
There are types of varnishes for bricks in accordance with their composition:
- acrylic;
- polymer;
- chimney (stove);
- solvent.
Acrylic lacquer
This is a varnish for bricks for interior wall decoration. Its composition is multicomponent and includes organic mixtures and solvents. Acrylic-based coatings protect the walls from cracks, salt stains and damage. They are non-toxic and meet the standards that are put forward for paintwork for interior decoration.
Polymer varnishes
The composition of polymer varnishes includes acrylic polymers and alkyd resins. Also in the composition are organic and inorganic additives. Each component of the polymer-based paintwork is responsible for a specific property of the varnish: resistance to weather conditions, durability.
Fireplace (stove) varnishes
The most resistant to high temperatures are fireplace or stove paints and varnishes. They relate to refractory and heat-resistant coatings and are used as varnish for a brick oven. Such a coating gives the fireplace an attractive appearance and at the same time reliably keeps the brick from exposure to high temperatures. Heat-resistant brick varnish for bricks is its main feature, but often builders use it to paint building facades and fences.
Solvent varnishes
They are made on the basis of silicone resins. Resin-based brick varnish for outdoor works is a very reliable tool, it does not spread when applied. Its minus is only that it is very flammable and requires compliance with safety precautions for use.
Varnishes can be purchased in cans or in aerosol cans, which allow you to apply them on the surface in the most convenient way.
Classification
Classify varnishes based on their composition and scope. Designate the chemical composition of the film-forming substance:
- PF - pentaphthalic. Pentaphthalic resin and vegetable oils in the composition.
- UR - polyurethane. According to TU 6-21-14-90, the semi-finished varnish consists of oil (tung, linseed), resin (alkyd and epoxy) and hardener.
- VA - polyvinyl acetate. Emulsion of polyvinyl acetate.
- EF - epoxy ether. Suitable for covering the facade, as it is resistant to environmental influences (TU 6-10-1442-79).
- XB - perchlorovinyl (suspension of perchlorovinyl resins). Varnishes have a high degree of adhesion, which allows you to keep the brick from moisture for a long time. PVC film reliably protects the surface in adverse weather conditions. Available in accordance with GOST 25129-82.
- EP - epoxy. Basis - epoxy, dianovye resins. Resistant to mechanical damage and temperature changes.
Rating of the best manufacturers of varnishes for brick coating
The builders received the greatest trust in varnishes Pufas (Germany) and Petri made in the USA. The cost of these materials is about the same. But still, the consumers of our country liked German varnishes more, because thanks to them they manage to get the effect of wet stone.
Also on the market of paints and varnishes there is the Russian brand Neomid, which produces varnishes for interior decoration. They are absolutely non-toxic and are in great demand.
Another Russian manufacturer is the Chief Technologist. It produces varnish for stone and brick based on raw materials from foreign suppliers.
Coating features
Varnishing of facades, walls and fireplaces is no different from painting. First you need to clean the walls of dirt and dust, putty cracks, remove excess, bulging cement. Previously, it is worth completely removing the old paint layer from the surface. Aligned walls must be sanded with emery coarse paper, then washed. You can use any detergent for this. A clean, dry surface is primed. Additional materials, such as a primer, should be chosen by the same manufacturer as the varnish.
The choice of varnish, its quality and durability
Choose a varnish based on which surface they plan to apply it to. For the decoration of external walls, it is better to purchase a paint and varnish material that forms a water-repellent film. This is the main parameter. His opposition to the sun should be high. It should also match the decor.
Acrylic and silicone based varnishes are best suited for interior decoration. They will preserve the original appearance of the walls and reliably protect them from the effects of steam, mechanical damage, etc.
For fireplaces and stoves, only heat-resistant, non-toxic varnishes are suitable.
The durability of this material will primarily depend on its type, as well as on the preliminary processing of the walls. The preparation of facades for varnishing should always be carried out in dry, warm weather. This stage should be given special attention.
Caring for the interior walls is very simple, just wash them every six months with soap and water.
Lucky should be purchased only from trusted manufacturers and be sure to pay attention to compliance with their technical standards of the country.
It is better to purchase varnishes for brick and stone in construction supermarkets, employees who can present a quality certificate on paintwork materials and issue a check. In construction stores and supermarkets you can always get comprehensive information about the manufacturer of this type of product and its characteristics. Before buying, it also makes sense to consult a specialist in this field.