Brick walls are the most versatile exterior decoration technology for both exterior and interior walls. Modern designers advise to make imitation of brick walls on various materials used for construction and decoration, this gives buildings a prestigious look.
Options for painting bricks
Painting natural brick walls and architectural elements must be approached very carefully. When is it advisable to paint the bricks?
There are paints that do not allow moisture to penetrate deep into the bricks, they do not increase humidity and do not collapse during periodic freezing / thawing. But you need to choose such paints very carefully. In addition, the base must be prepared with great care. We will explain how this is done in the article below.
Old brickwork that can be restored
Quite an unpleasant phenomenon, it is found on poor-quality brick, for the manufacture of which clay with a high salt content was used. Removing salt crystals from the surface of bricks is not a problem, it is difficult to eliminate the cause of white stains. In these cases, you cannot do without special construction measures and complete painting.
Efflorescences on the walls
Separate decorative zones are created on the walls above window or door openings, imitation of columns, arches, etc. is made.
What criteria are used to select materials - there will be a separate section on this topic.
Brick chimneys are also decorated with paint
Experienced builders strongly do not recommend painting new walls, let them stand for about a year , during this time all the shortcomings will appear. Keep in mind that removing old paint is a laborious and time-consuming process, you will have to use special equipment, you cannot do such work manually. To these problems should be added the estimated cost of the work.
The operating conditions of the facade walls are difficult.
The surface is negatively affected by precipitation, climatic temperature conditions, and solar radiation. Accordingly, paints must withstand these factors for a long time, the maximum time not to deteriorate their original characteristics.
Choosing facade paints
What criteria should be used to choose facade paints?
|Parameter name||Brief description|
|Resistance to alkalis|| Many bricks give off alkali , this feature is due to the presence of chemical compounds in the clay. Depending on their percentage, the release of alkalis can be visible (called efflorescence) or invisible. But they are always there.
Paint should not flake off on such surfaces.
|Resistance to fading||The sun's rays have a negative effect on the paint, over time it can change color. If you use low-quality materials, then the walls of the building will eventually become multi-colored. On the south side, they will brighten, and on the north, they will retain their original shade.|
|Resistance to atmospheric precipitation|| The coating must reliably protect the brick and mortar in the joints from moisture penetration.
Wet materials expand during freezing, ice crystals appear on the surface and damage the paint. As a result, it exfoliates, it will have to be repaired.
|Vapor permeability||A brick wall does not "breathe" well, if the paint further reduces vapor permeability, it worsens the indoor climate, negatively affects the stability of architectural structures.|
|Mechanical strength||The paint should not be scratched, withstand not only one-time mechanical loads, but also prolonged exposure to abrasive dust.|
|Adhesion values || The strength of adhesion to the surface must ensure a long operating time.
Moreover, good adhesion should be not only with a brick, but also with a cement-sand mortar.
|Plasticity||As the wall heats up, it expands. The coating should compensate for thermal linear expansion without problems.|
|Processability|| The paint should be easy to apply with simple devices and dry relatively quickly. Do not require the use of personal protective equipment for the respiratory system and skin.
The list of special requirements is long, as a result, the price of materials with such properties cannot be low. And the last thing. The lifespan of paint depends on the brand and manufacturer, but rarely exceeds 10 years. At the end of this period, repairs will have to be done. Keep this in mind when making your final decision to paint your façade brick walls.
For interior works, other requirements are imposed on paints. In addition to the above properties, security is added. The paint cannot contain hazardous chemical compounds, it is advisable to use water-based brands. As for the resistance to sunlight and moisture permeability, the indicators are not so tough.
Balcony with painted brick wall
Brick stoves and fireplaces are heated to high temperatures.
An additional requirement for materials is heat resistance. Ordinary paints in such conditions quickly fade, peel off. Before buying paint, carefully study the instructions for use, manufacturers specifically indicate possible places of use.
We cannot list all types of materials, we will focus only on the most commonly used ones. The listed paints have earned positive reviews not only from users, but also from professional painters.
|Name||Properties and recommended places of use||Approximate cost|
|Water-dispersive, acrylic. Has a high resistance to alkalis. Can be used for painting bricks, concrete, cement-sand plaster.||From 320 rub.|
| It has silicone additives to improve performance. |
Possesses increased elasticity and resistance to harsh UV rays. Does not allow moisture to pass through, does not fade, the surface inhibits the growth of mosses. Does not require a lot of time for periodic cleaning, can be easily cleaned with ordinary water with a garden hose.
|From 430 rub.|
| Acrylic water-dispersion, facade, resistant to alkalis. |
It does not fade for a long time, does not crack from changes in the linear dimensions of surfaces.
|From 770 rub.|
|One of the newest developments, universal application, differs increased operational performance. Does not change shade, is not afraid of mechanical stress.|| From 1520 rub.
|Self-cleaning, dust is washed off by natural precipitation, with a lotus effect , the surface does not get wet, the rain drops slide off. One of the most expensive and high quality.||From 1650 rub.|
Professionals do not recommend saving too much and buying paints of dubious quality. It must be remembered that premature repairs in cost always far exceed the savings on the cost of the material.
The quality of paint affects the durability of the coating of brick walls by no more than 50%, everything else depends on the thoroughness of surface preparation and the accuracy of adherence to technology. Take your time, follow all the recommendations. Any correction of a marriage requires not only additional money, but also a lot of time.The painting process itself is divided into two stages of equal importance: surface preparation and material application. Let's consider these operations in detail.
So you've decided to paint your brick facade walls.
Step 1. Take measurements of surfaces minus the area of door and window openings. There is nothing complicated here, there is no need to tell in detail.
Consumption of facade paint for 1m2
Take measurements and write down the results in table
How to calculate the area of the walls
Select the brand and color of paint. Study the instructions for use, determine the amount according to the recommendations. We strongly recommend stocking approximately 10% of the paint. Why? First, you can work more calmly. Secondly, no manufacturer can know the exact characteristics of the surfaces of your walls, and it depends on them how much paint is absorbed and how much will be needed to complete the work.
Thirdly, a small supply of paint will always come in handy if you need to urgently repair a damaged section of the front wall.
Shades of colors
Step 3 . Examine the surface of the wall, determine the method of its preparation, depending on the origin and intensity of dirt and the condition of the brick. This is a very demanding job, mistakes made are difficult to correct. What to look for during the revision of the condition of the wall?
Assess the condition of the brick wall surface
Step 4. Prepare the brick wall surface for painting .
.. To do this, you will need a metal brush or drill, a spatula, acetic acid, rags, a broom, and a compressor. If you can do soft blasting, great. We will tell you what it is and how it is done in the course of the article.
Preparation of the wall is divided into several stages.
Remove adhered mortar from the wall. Use a trowel, putty knife and wire brushes. The mortar adheres firmly to the brick - you can chop it down with a chisel. Examine surfaces carefully, remove dust.
Cleaning the wall with a brush
If crumbling bricks are found on the wall, be sure to fix it. Dig out the bad brick as deeply as possible, you should get to a solid body. Next, you need to fill the depression with a solution. Large pit depths - throw in several openings, let each layer harden and dry a little, otherwise deep cracks will appear on the surface.
Do not wait until the cement is completely cured.
It is advisable in an hour and a half to make a jointing under the brick seam in the sketched solution, if the solution hardens completely, then the work will become more complicated. Use wooden sticks or any materials at hand; the width and depth of the new joint should not differ from the size of the old one. After painting the surface of the wall, the repaired area is no different from the neighboring areas.
Use a handy tool to join.
Check the condition of the seams.
The biggest problem - during the laying of the walls, the craftsmen did not adhere to the technology for making the mortar, they gave very little cement. Such a solution crumbles a little in the seams, the paint does not stick in these places. The situation is very unpleasant. What to do? There are two ways out, but both are time consuming.
Deepen the seam by 3-4 millimeters, make a new high-quality mass and carefully correct all the seams. Immediately you need to remove fresh mortar that has fallen on the front of the brick.
The primer should be deep penetrating.
Deep penetration primer
Apply primer to seams with a brush masonry
If there is efflorescence, then they must be thoroughly cleaned. You can wash it with a vinegar solution, but this has little effect. The fact is that this is not surface pollution, but protruding salts from bricks. Efflorescences will appear again until all the brine comes out of the bricks.
You can paint the surface only after new crystals have ceased to appear, only white spots are painted over. The work of removing efflorescence is very difficult and time-consuming. Unfortunately, even great efforts do not always lead to a positive result; you have to look for other methods to eliminate the problem. Modern materials and technologies make it possible to solve them much faster and easier than painting. We advise you to think carefully before trying to paint over the areas of efflorescence.
How to remove efflorescence on brick
After the walls are prepared, give them time to dry completely, it will take at least a week of good warm and dry weather. Only then can you start painting. Close windows and doors immediately to prevent paint spills. Cover them with plastic wrap and tape. Make sure that the tape holds firmly, it is difficult to clean windows and doors from the trapped paint.
If it is possible to clean a brick wall with soft blasting, great. The work is not only accelerated, but the quality is improved. In addition, this is one of the few ways to remove graffiti or other inscriptions, soot, soot, and the smell of burning from the surface of brick walls. The technology allows you to completely remove contaminants without affecting the safety of the top layer. For cleaning, soda (sodium bicarbonate) and chalk (calcium carbonate) are used.
Water jet cleaning
The components are conveyed through a calibrated nozzle to the surfaces to be cleaned with a high-pressure air jet. Modern devices reduce material consumption by about 30% and at the same time increase labor productivity just as much. The cost of cleaning is reduced by at least 20%, all work can be done in one work shift. The disadvantage is the high cost of the device.
Deep penetration primers
Can be painted with brushes, rollers and pneumatic spray guns.
Depending on the painting method, the paint requirements vary slightly. For a brush and roller, it may be slightly thicker; for a spray bottle, it should be diluted with solvent.
Important. After cooking, pour paint for the spray gun into the container only through a special sieve.
Painting the facade with a spray gun
What are the features of working with a spray gun?
From the nozzle, the jet escapes in different directions and at different speeds, a lot of material goes "nowhere".
A properly adjusted modern spray gun can save up to 10% of paint and improve the quality of staining.
Microparticles of paint with great force hit the surface of the brick, penetrate all the cracks. Another important advantage of spray guns is that there is no need to re-correct the surface after them.
Paint on brick wall
Traditional method painting various surfaces. With a roller, work goes faster than with a brush, but the kvask does not get into the deep seams. You have to go through the wall again with a brush.
In addition to low labor productivity and high labor intensity, these methods have another significant drawback. During work, grains of cement-sand mortar adhere to them, remain on the front surfaces of the bricks and become noticeable. The appearance of the painted wall deteriorates significantly.
Application of paint on the wall using a roller
As we have already mentioned, there can be no harmful chemical compounds in the composition of paints for interior work. The paint is applied in most cases with a roller or brush.
There are options for painting the surface of bricks and joints with different colors.
Before starting work, take measures to protect the flooring from paint.Cover them with heavyweight paper or plastic wrap. Free up the workspace, put the paint container in a convenient place. Work carefully, do not spill paint on the floor.
Practical advice. The roller should move at a moderate speed. Rotating too fast may cause paint splatters to fly long distances and onto other objects.
The second layer is applied after the first one has partially dried; to improve adhesion, do not let it dry completely. How to check the standing of the first layer? Gently brush over the surface with your fingertips, if they stick a little, then you can apply a second coat of paint.
Each brick can be painted in its own color
Last time, country style comes into fashion, and it involves the use of the maximum number of traditional rustic elements in the design of the premises. The most traditional element of ancient dwellings is the Russian stove. Today it is presented not only as an element of decor, but also as an acting one. The surface temperature can exceed one hundred degrees, not every paint will withstand such harsh operating conditions. Previously, stoves were painted with lime - cheap, hygienic, reliable and fast.
Disadvantage - every year it was necessary to renew the painting, the lime was quickly erased.
Currently, almost no one uses lime, it has been replaced by water-based paints, resistant to high temperatures and safe for residents. Before purchasing, be sure to pay attention to the manufacturer's recommendations for use, buy only materials that are resistant to high temperatures. The technology for painting surfaces is no different from the above.
Heat resistant paint
Brick stove in a modern interior
With fireplaces it is a little easier.
The design of fireplaces does not provide for a large heating of surfaces, their efficiency is the lowest among all heating devices. For the most part, a fireplace is placed for prestige and beauty; it is warm around it only when the wood is burning. The fire has gone out - you need to look for another place for comfortable heating. Such design features facilitate the choice of a specific paint, in addition to safety for others, no additional conditions are imposed.
Heat Resistant Ink
You will have to paint in at least two layers.
If the paint is light in color, then two coats may not be enough. Buy paint based on the number of coats.
We recommend using a primer. It greatly increases the adhesion of the compounds, reduces material consumption. At cost, the primer is much cheaper than paint, which increases the economic efficiency of its use.
Apply primer to the wall before painting
When choosing rollers, choose soft options. Hard ones leave many gaps on uneven surfaces.
Paste over the joints of brick walls or elements with other structures with masking tape. If you have little practical skills, do not glue anything, and in the joints, finish the remaining unpainted surfaces with a brush. If you work carefully, then the abutment line will be even, you will not have to correct or clean up anything.
Painting a brick wall
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