Lime is a material widely used for whitewashing wall surfaces with disinfecting properties and is resistant to the formation of mold and mildew. It is a mixture, the components of which are obtained by burning limestone rocks.
As a rule, there are two types of lime on sale: slaked fluff and quicklime lump mixture. To whitewash with lime, it is necessary not only to properly prepare the base, but also to dilute the mixture. Otherwise, the work done will not bring the desired result, and all efforts will be reduced to zero.
Benefits of lime
The material is not highly decorative, but it has many positive qualities, which contributed to its wide spread:
- Hygiene. Any microorganisms that enter the lime die. No other type of finish can boast of this property. Fungal and moldy formations do not appear on lime-coated surfaces.
- Moisture resistance and high strength. When the whitened surface dries, a special film is formed on it that is resistant to mechanical damage and abrasion.
- Cheapness. Unlike other materials, lime is one of the most economically profitable ways finishing.
All these advantages are main reason the fact that lime has not lost its relevance with the advent of more modern finishes.
Where is lime whitening used?
The antiseptic properties of the material have made it most popular for use in kindergartens, medical institutions, and strength - in public buildings with high traffic. The moisture resistance of lime allows the mixture to be used for finishing walls in swimming pools, baths, and showers. Low cost makes lime profitable solution for areas such as garages, closets, basements and so on.
Whitewashing remains relevant not only for public places. It is actively used to carry out inexpensive cosmetic repairs V office premises, commercial properties, city apartments, private houses and country houses. It is used wherever inexpensive and high-quality wall decoration is needed.
Disadvantages of lime
The mixture has not only positive characteristics, but also disadvantages. Lime is a caustic material. This imposes certain requirements to safety measures both during preparation and application. It is best to work in old clothes, which you can simply throw away later. It is necessary to protect the mucous membranes of the eyes, respiratory tract, skin of the face and hands - wear gloves, special glasses, and a respirator.
If you do not observe the proportions in preparing whitewash, or do the mixing incorrectly, then stripes, bubbles, and stains will appear on the surface being treated. A solution that is too thick will not only bubble during drying, but also fall off, while a solution that is too thin will not allow you to obtain the desired shade on the wall. To avoid poor-quality whitewashing, you need to dilute lime in strict proportions, follow the instructions and recommendations.
Lime consumption and proportions
The slaked mixture is diluted in proportions of 1 to 3. Take 1 kilogram of powder or batter for 3 liters of water. The solution mixed in this way allows you to get approximately 8 kilograms of whitewash. This amount is enough to cover an area of 12 square meters.
Exists alternative way calculating the initial proportion. It depends on the quadrature. The wall is calmed down, divided into “sections” of 2.5 square meters, for each of which 750 ml of water and 500 grams of lime are taken.
Lime consumption depends on the material from which the surface is made. If it whitens brickwork, then a similar volume of solution will be enough for no more than 10 square meters. How much material will be spent depends on the quality of surface preparation, as well as the tools used to apply whitewash.
Do not use a roller for application. It is recommended to apply the solution with a special brush. When whitewashing is carried out on a brick surface, the bristles of the tool should be natural. The spray gun allows you to achieve maximum savings on the mixture. It is more convenient to use hand-held devices with a long hose rather than electric ones.
How to dilute slaked lime correctly?
The process of preparing whitewash is not complicated, but requires following certain recommendations:
- You need to mix the lime in small portions. At a time, you need to dilute no more than 2 kg of powder or batter per 1 liter of water.
- It is better to pour the mixture cold water, since the chemical reaction that occurs when mixing produces heat.
- The first portion is thoroughly mixed, poured with a liter of water, and stirred again. Repeat this step until the required amount of water has been used.
- The resulting solution is left for a day.
After 24 hours, the whitewash is completely ready for application.
Alternative cooking method
After the whitewash dries on the walls, it leaves marks on hands and clothes. To avoid this, you should add a saline solution to the mixture, prepared by completely dissolving 2 kilograms of salt in 1 liter of water. Using this method of mixing whitewash, the preparation procedure is not limited to infusion for 24 hours.
A day later, a saline solution is introduced into the lime. Mix everything thoroughly. If it turns out too thick, add a little water to achieve the desired consistency. The mixture is stirred again and left for 24 hours again. Main feature This method is that the salt solution must be prepared before direct mixing. Otherwise, the salt in the water will precipitate.
If whitewashing is planned to be carried out in a closet or other place, then you can limit yourself to ordinary kneading. When work is carried out in high-traffic areas, it is better to immediately prepare a mixture with a saline solution, which will prevent white lime marks from leaving on clothes.
Quicklime
Used as a binder for cement mortars, various types plasters. It increases adhesion between coatings and the treated base, gives plasticity to the materials, but is absolutely not suitable for whitewashing wall surfaces. If for some reason there is no ready-made fluff in the form of dough or powder, the lime is slaked.
On an industrial scale, lime is slaked in large special pits, into which the mixture is poured and water is poured. You can carry out the extinguishing procedure at home. The amount of water is calculated depending on what consistency the material needs to be obtained - thick or milky. In both small and large quantities, the extinguishing process takes 36 hours. You can reduce it to a day, but this will affect the quality of the resulting whitewash.
During the slaking process, the lime boils and splashes in different directions, but requires constant stirring. The mixture exhibits activity from 5 to 30 minutes, during which it must be stirred. To prevent the caustic solution from getting on the skin and mucous membranes, it is necessary to use personal protective equipment and a long object for mixing.
How to slak lime correctly?
It is recommended to dilute the powder in metal container. It must be clean and free of rust. Its dimensions depend on the volume of whitewashing required for the work. The amount of water and quicklime is taken in a ratio of 1 to 1, that is, a kilogram of powder is placed per liter of water. It should be taken into account that the heat generated during the extinguishing process reaches temperatures of up to +150 degrees Celsius.
Stop stirring the mixture when it stops boiling and splashing. But it is still impossible to work with such material. Cover the container with slaked lime and put it away for two or three weeks. dark place. If whitewashing is not urgently required, it is better to wait 28 days. The longer the holding period, the better solution lies on the surface.
Unlike ready-made batter or powder, the recipe for making whitewash - diluting lime after slaking with water - is somewhat different. To be more precise, the proportions are chosen completely arbitrarily. Water is poured in until a white dense mark remains on the wooden stick used for mixing.
When using quicklime, it should be borne in mind that the approximate yield from one kilogram of the mixture is about ten liters of a solution ready for whitewashing.
"Upgrading" of lime
To whitewashed walls looked impressive and beautiful, especially when work is carried out in rooms, hallways, on the veranda and other places where decorativeness is important; various additives are added to the diluted lime before application. Along with blue, which gives the walls a bluish tint in the light, they use soap, egg whites, glue, salt, liquid glass, flour.
Whitewash can have absolutely any color. To achieve the desired shade, a pre-selected color is introduced into the prepared solution. The introduction of linseed oil into the composition allows lime to be given increased adhesion to surfaces with a poor level of adhesion to paint and varnish materials. Thus, lime can be used where other types of finishing are not suitable.
Glue similar saline solution makes the whitewashed wall surface completely non-marking. To eliminate all the shortcomings, which often lead to the fact that whitewash is rarely used in bedrooms, living rooms, and the kitchen, components such as color, salt or glue are introduced into the lime.
Lime whitening is rarely used these days. But sometimes situations arise when you have to do this.
For example, renovation of an apartment with elderly parents who do not recognize other options except lime whitewash. Or renovating the classroom where your children study.
Whitewashing with lime is cheap, and lime has antiseptic properties. Due to the fact that lime is good antiseptic, lime whitewash is recommended for kindergartens, schools, and medical institutions.
You can use lime to whitewash a garage or basement- not expensive, and the white walls and ceiling will make it brighter. Whitewashing of walls with lime is allowed. Once dry, lime whitewash creates a strong film, and the whitewash will not remain on your clothes if you lean against a wall.
Lime whitewash is used for finishing wet areas due to its moisture resistance.
Whitewashing with slaked lime disinfects the surface. For this reason, it is used for whitewashing cellars, chicken coops, cowsheds and other livestock premises.
In gardens, tree bark is treated with lime whitewash.
How to whitewash walls and ceilings correctly
Finding a master who will take on this work is now difficult. The work is not the cleanest. The master will not work for low pay. The payment he quotes will seem too high to you. This means you will have to whitewash it yourself.
Do-it-yourself whitewashing with lime is not so much a difficult task as it is unpleasant, and most importantly, dirty. Before starting work, cover the floors and furniture with film if it is not possible to completely empty the room. Prepare protective clothing.
Lime consumption during whitewashing
The consumption of whitewash depends on the method of its application and on the surface being treated. When applying whitewash with a brush, the consumption increases. For brick walls, whitewashing will require more than smooth walls.
Approximate consumption is 0.5 liters of finished whitewash per 1 m².
Lime is available in slaked and quicklime varieties. Slaked lime is sold in the form of powder - fluff lime, and in the form of lime dough.
Fluff lime is diluted in a ratio of 3 liters of water per 1 kg of powder. From one package of fluff weighing 2 kg you will get 6 liters of whitewash. This whitewash is enough for 12 m² of surface, provided that it is not brickwork.
Ready lime dough is diluted at the rate of 1 kg of dough per 3 liters of water. Remembering that one liter of whitewash can whitewash two squares of walls, it is easy to calculate how much lime paste is needed.
Quicklime, lump, must first be quenched, then diluted with water.
To slak the lime, add water in a 1:1 ratio. As a result of quenching, you will get a powder. If you add three times more water, you will get a lime dough. The powder or dough for preparing lime for whitewashing is diluted with water. From 1 kg of quicklime you get 10 liters of whitewash, ready for use.
It is difficult to calculate whitewash consumption with an accuracy of square. Lime is an inexpensive material, so nothing bad will happen if you buy a couple of extra packages.
How to dilute lime for whitewashing
Lime is diluted with water according to the proportions indicated above.
Quicklime is first slaked with precautions. When slaking lime, it releases a large number of heat, steam is formed. Slaking lime may splash out of the container. Rubber gloves, safety glasses and thick clothing will help you avoid burns if lime gets on your skin.
After slaking, the lime is not immediately used for whitewashing; the solution must sit for at least two weeks. And only after you have waited a certain period of time, the solution can be diluted with water and whitewashing can begin.
It is better to buy slaked lime because it is easier, faster and safer to prepare for work.
Add 2 tbsp to diluted lime per 10 liters. spoons of drying oil, 100 g table salt and painter's blue. Before adding salt and blue, dilute in hot water. Salt and blue make the whitewash white, and drying oil promotes better adhesion of the whitewash to the surface and gives the whitewash strength.
The saturation of the whitewash solution depends on the method of its application. When applying whitewash with a brush, the solution becomes thicker. When applying whitewash with a sprayer, the mixture should be more liquid and must be filtered through several layers of gauze.
Surface preparation
Puttying the walls before whitewashing helps to get even beautiful ceilings. But because whitewashing with lime is a cheap finishing option; usually the walls are not leveled or puttied.
To ensure that the whitewash lays evenly and does not peel off after a week, the surface is cleaned and all contaminants are removed.
When whitewashing the ceiling with lime chalk whitewash removed completely. If the ceiling was previously whitewashed with lime, you can leave old whitewash, if it holds well or remove partially.
Yellow spots on the ceiling, those remaining after the flooding of the neighbors are washed with white. Copper sulfate solution works well for removing stains. But keep in mind that during further repairs, if you decide to paint the ceiling with water-based paint, stains may appear again. Only they are no longer yellow, but green.
The surface to be whitewashed must be absorbent. By oil paint no whitewash is applied.
Don’t listen to advice that the walls and ceiling need to be primed with a regular primer! The primer creates a film on the surface, on which the whitewash will roll or collect in drops on the ceiling. This is exactly the case when priming is to your own detriment.
What tools are used for whitewashing?
Whitewash the walls and ceiling with a brush, spray or spray gun.
Do not use a roller for whitewashing. When rolling out the second layer of whitewash with a roller, the first, dried layer of paint will not withstand the load and will move away from the surface.
A special brush is used for whitewashing. Before use, soak the brush in warm water for a couple of hours.
Brick walls can be whitened with a regular brush with natural bristles. When whitewashing with a brush, streaks remain. To prevent brush streaks from being noticeable, the second layer of whitewash should be applied in the direction of the light flow.
Whitewashing with lime using a spray gun gives the most good results. The whitewash goes on smoothly; the consumption of lime when whitewashing with a spray gun or spray is less than when applying with a brush.
Spray guns are mechanical, more often called manual or electric.
A hand-held spray gun is convenient because it has a long rod and a long hose for feeding whitewash into the sprayer.
This spray gun is convenient for whitewashing high ceilings without the use of stepladders.
U electric spray guns The power button is located next to the sprayer, so when working you cannot do without stepladders.
Whitewash the premises with such a spray gun high altitude difficult - only with special stepladders.
The video shows whitewashing a ceiling with an electric spray gun.
Spray guns are expensive tools. It is not advisable to purchase them for whitewashing one room. For whitewashing, you can use an old-style vacuum cleaner. The inconvenience is that the container for whitewashing is small - usually a 0.5 liter jar is used. It is necessary to frequently interrupt work in order to add a new portion of whitewash.
For whitewashing, you can use plant sprayers. Such sprayers create pressure sufficient to spray whitewash. Sprayers are available in capacities from 15 to 5 liters.
Whitewash is poured into the container, then air is pumped in and when the button is pressed, the whitewash is sprayed evenly. With a small sprayer you can whitewash the walls and ceiling in a small room.
The sprayer with a capacity of 5 liters has a rod; with this sprayer you can whitewash a room with high ceilings.
Operating procedure
- Cover windows, doors, furniture and floors with film - this will make it easier for you to clean the room after whitewashing.
- Prepare the surface for whitewashing - remove the chalky whitewash, get rid of stains and flaking limestone whitewash. Seal the cracks.
- Dilute the whitewash for work. If you whiten using a spray gun or sprayer, strain the solution. Before adding a new portion of whitewash to the spray gun container, stir the whitewash solution.
- When working with spray guns, take care to protect your face and hands. It's better to look funny than to suffer from lime burns later. Goggles or mask, respirator, latex gloves, thick clothing - all this is necessary for protection.
- Before applying whitewash, lightly moisten the surface using a spray bottle.
- Pour the whitewash into the spray gun container and pump air into it. Adjust the spray nozzle so that the whitewash is sprayed evenly. If the whitewash does not spray, it means it is too thick. Add water and mix well.
- The sprayer should be at a distance of 15-20 cm from the surface.
- Whitewash is applied in a circular motion.
- The second layer of whitewash is applied at intervals of one and a half to two hours over the wet first layer.
How to dilute lime
Lime is a popular material for wall finishing, which has disinfecting properties and is not susceptible to mold and mildew. This type of finish is mainly found in public places where a coating that is resistant to abrasion and mechanical stress is needed.
General information about lime
Lime is a mixture of substances that are a product of calcination of limestone rocks. On sale you can most often find lump quicklime and extinguished fluff. Lime is considered the most hygienic type of finishing, since it destroys all microorganisms that come into contact with it. In addition, it has a high level of moisture resistance and strength. When the lime coating dries completely, a film forms on it, which ensures such durability of lime whitewash. It is also worth noting that the cost of lime is quite low compared to other types of finishing materials.
Do not forget about some of the disadvantages of this material. If the master performing the work does not know how to properly dilute the lime and makes the solution in the wrong proportion, then bubbles, streaks and streaks will appear on the treated surface. When dry, a very thick solution will begin to bubble and fall off, but a solution that is too thin will not. desired color on the wall. That is why it is necessary to dilute lime strictly according to the instructions and in the required proportion.
In construction this material often used as a plasticizer for cement mortars. Lime binds the solution well and prevents it from cracking. It is an indispensable ingredient in plaster mixtures. In addition, it helps the coating adhere to stone and wooden surfaces. But for this you can only use slaked lime.
Lime is also used in horticulture to treat trees and reduce acidity in the soil. To whiten trees, lime should be mixed with copper sulfate. Animal skins are also treated with this substance, water is softened and disinfected with it, and bleach is used in medicine to disinfect premises, equipment and water.
How to dilute lime for whitewashing
Nowadays it is quite difficult to find a master who will take on this work, because the work is not the cleanest, and no one will work for low pay. So you'll have to whitewash it yourself. Do-it-yourself whitewashing is not at all difficult task, but very unpleasant, and most importantly, dirty. Before work, it is necessary to cover the floors and furniture with film if it is not possible to completely empty the room. Also prepare protective clothing.
The consumption of whitewash primarily depends on the method of its application and on the surface being treated. If you apply whitewash with a brush, the consumption will increase. On brick walls required more material than on smooth walls. You will need approximately 0.5 liters of finished whitewash per 1 square meter. m.
You can find slaked and quicklime in stores. Slaked lime is sold in the form of powder - fluff lime, and in the form of lime dough. Fluff lime should be diluted in a proportion of 3 liters of water per 1 kg of powder. Accordingly, from one package of fluff weighing 2 kg you will get 6 liters of whitewash, which is enough for about 12 square meters. m of surface, only if it is not brickwork. Prepared lime dough is diluted in a ratio of 3 liters of water per 1 kg of dough.
Quicklime, lump, must first be quenched, and only then diluted with water. To do this, lime must be poured with water in a 1:1 ratio. As a result, you will get powder, and if you add three times more water, then you will get lime paste. After this, the resulting powder or dough can be diluted with water. From 1 kg of quicklime, approximately 10 liters of whitewash, ready for use, is obtained. You cannot calculate the consumption of whitewash to the nearest square. Lime is inexpensive material, so you may well purchase a couple of extra packages.
When slaking lime, take precautions. When extinguished, a large amount of heat is released and steam is formed. Slaking lime may splash out of the container. In this case, rubber gloves, safety glasses and thick clothing will help avoid burns if lime gets on your skin. After slaking, the solution must sit for at least two weeks, and only after that it can be diluted with water and whitewashing can begin. It is advisable to buy slaked lime, because preparing it for work is much easier, faster and safer.
To the diluted lime, per 10 liters, you need to add 2 tablespoons of drying oil, 100 g of table salt and paint blue. But before that, salt and blue are diluted in hot water. These components give the whitewash its whiteness, and drying oil promotes better adhesion of the whitewash to the surface and gives it strength. The saturation of the solution mainly depends on the method of its application. If you apply whitewash with a brush, then make the solution thicker, and when applying whitewash with a spray, make a thinner mixture and be sure to filter it through several layers of gauze.
You can refine the composition of lime by adding additional ingredients. This way you will get paint with completely new qualities and even properties. In addition to water, liquid glass can be mixed with lime. glue, soap, salt, milk, flour, egg whites and any colors. By adding color you can get any shade and your whitewash will easily turn cream, yellow or even Brown color. In some cases, lime is added linseed oil, most often this technique is used for whitewashing very smooth surfaces, on which paint does not adhere well, for example, furniture. Glue is added to make the lime more viscous, and after drying it does not stain things so much. As you can see, inexpensive lime whitening can be great paint for any surfaces. Its main disadvantage is that it is not suitable for whitewashing walls, as it strongly sticks to hands and clothes. This method is appropriate if it is the upper half of the wall.
How to whitewash a house
Puttying the walls before whitewashing will allow you to get smooth, beautiful ceilings. But whitewashing with lime is considered a cheap finishing option, so the walls are usually not leveled or puttied. In order for the whitewash to apply evenly and not peel off after a week, it is necessary to clean the surface and remove all contaminants. When whitewashing the ceiling with lime, the chalk whitewash will have to be completely removed. The old whitewash can be left if it holds well or partially removed. Yellow stains on the ceiling that remain after neighbors were flooded can be washed with white. Copper sulfate solution is very effective in removing stains. But you need to remember that during further repairs, if you paint the ceiling with water-based paint. the spots may appear again. Only already green.
The surface to be whitewashed must be absorbent; whitewash cannot be applied over oil-based paint. Under no circumstances should you prime the ceiling and walls with a regular primer, as it creates a film on the surface on which the whitewash will roll off or collect in drops on the ceiling.
On next stage, according to the chosen recipe and taking precautions, whitewash is prepared. Now you can start applying the first layer. work surface You need to wet it a little so that the lime can carbonize, which will determine its strength. The first layer on the walls and ceiling should be applied in the direction from the window, and on the stove - horizontal lines. If you do this with a sprayer, then spray the solution in a circular motion in the selected direction.
It is very important to apply the second coat before the first coat dries. Now the white must be applied in the opposite direction so that no marks from the roller or brush are visible. In general, it is better to use a special brush for whitewashing. Since the first layer applies well with a roller, but when applying the second layer, problems begin, since the whitewash drags behind the roller and lags behind the wall. Spray guns are also used successfully for whitewashing; in this case, the lime lies evenly on the surface, and the consumption is much lower than when working with a brush. It is advisable to whiten on cloudy days or in the evening so that the sun's rays do not reach the surface. It is not recommended to carry out such work in the hot season, as moisture evaporates too quickly and the layer becomes less durable. In general, lime coating is reliable and durable, lasting about 4-5 years.
http://estroyka.com
A bar of laundry soap must be crushed into shavings, pour boiling water over it and stir thoroughly until completely dissolved. After complete cooling, add 2 tbsp to the soap solution. l. lime
In parallel with this, you can begin slaking the lime. This process is carried out using water in strict adherence to the proportions described in the instructions on the package. As a rule, to prepare a solution for whitewashing a ceiling, you need to dilute about 2 kg of lime in 5 liters of water.
After adding a cooled soap solution to the resulting composition, you need to thoroughly mix all the ingredients and add water so as to completely fill the 10-liter bucket.
Lime mortar with added salt
Another common and simple recipe for making whitewash is mortar with the addition of regular table salt. To prepare it, 1.5 kilograms of slaked lime are diluted in 4 liters of water.
In parallel with this, in another container it is necessary to prepare a brine solution by diluting about 5 tbsp in a liter of boiling water. l. product. After complete cooling, the composition is added to the lime and supplemented with water to the desired thickness.
Before applying to the surface
Regardless of what recipe the lime mortar is prepared from, it must be filtered before applying to the surface. To do this, the composition is passed through several layers of gauze.
If, when applied with a brush, traces of lint remain on the surface, then the consistency is too thick. You can correct the situation by adding required quantity water.
If desired, the lime mortar can be supplemented with various pigments - chromium peroxide, ultramarine or. For a bucket of whitewash, 300 g of dyes is enough.
It is obtained by burning mountain limestone in specially equipped kilns. As a result of the thermal process, lumps of lime are obtained at the output different sizes, maintaining their strength in the air. Lime has been used in construction for quite a long time; extinguishing lumps with water allows them to dissolve, resulting in a white solution.
Lime is one of the most inexpensive materials for redecorating premises. Use a lime solution as for whitewashing interior spaces at home and for outbuildings.
The benefits of using lime include:
- Low cost, experts rate the price of lime in lumps as five points, cheaper and at the same time quality material for finishing it is quite difficult to find.
- Lime has antimicrobial properties, that is, bacteria that get on its surface die. These properties of the raw material successfully make it possible to whitewash with lime in rooms for pets and outdoor toilets.
- Lime is moisture resistant and does not crack due to temperature changes. Walls treated with slaked lime are not afraid of fungus and mold; these microorganisms simply do not settle on this raw material.
- The natural material is safe for health, it does not have a strong odor and does not emit substances harmful to breathing; on the contrary, after using lime, the room is partially disinfected.
- This material can be applied both to old whitewash and to new walls.
During the whitewashing process, after the layer of lime dries, a special film is formed on its surface, which prevents fading and increases the resistance of the walls to abrasion.
Another feature of slaked lime is its good miscibility with dyes, that is, as a result of diluting the raw material with paint, any shade can be obtained.
How to properly slak lime at home
It is best to purchase lime for planned repairs in the form of lumps. Such raw materials are preserved for quite a long time, and they can be prepared for use in a short time. In order for the dilution to result in a solution that is satisfactory in terms of concentration and homogeneity, you need to know the basic rules for preparing it and be sure to follow safety precautions when working.
Rules for extinguishing lumps of lime at home:
- For whitewashing walls and ceilings, so-called lime milk is used. It is not difficult to prepare - you will need one part lime and about three parts cold water.
- Large lumps of lime should be crushed, but not into crumbs, and placed in a metal container.
- Water is poured into a container with lime; the solution must be stirred.
- After contact with water, a dissolution reaction occurs during which the lime may bubble and splash. Therefore, in the first 10-20 minutes, the container must be closed or moved to a safe distance. It is a good idea to use safety glasses and gloves, as splashes of the solution can cause burns.
- The prepared lime should sit for at least 6 hours, during which time it will completely dissolve.
- After preparation, the solution is filtered through a sieve. Thus, all undissolved elements and small debris are removed.
- Lime milk is completely ready for use. To increase strength and to prevent lime on the walls from staining clothes in the future, experts advise adding ordinary salt and drying oil to the solution. The amount of drying oil and salt is chosen from the volume of the resulting solution; 100 grams of both are sufficient for 10 liters.
If the solution turns out to be thick, it can be diluted with water until required proportions. Tint dyes are introduced in dissolved form; in order to give the lime an exceptionally snow-white appearance, it is recommended to add a little blue.
Slaking lime is not a labor-intensive process, but not safe. When slaking lime, you must follow safety precautions. Extinguish on outdoors, in a free space, always wearing glasses, gloves and special clothing:
Whitewashing equipment
Whitewashing can be carried out different ways. Previously, there was only one way to distribute lime over surfaces - using brushes. Modern technologies allow you to reduce the time spent on renovations using lime milk; the brush is now most often used if you need to whiten small surfaces.
You can make your work easier using the following devices:
- The spray gun can be manual, electric or pneumatic. If you are not going to process large surfaces, then the most economical option would be to buy manual view spray gun. The principle of operation of the devices is similar: one hose of the device is immersed in the solution, through it the lime is taken and fed through the accumulator into the other hose. At the end of this hose there is a nozzle, it is through it that the lime is released. The size and speed of the jet can be adjusted. Buy hand spray gun you can start from about one and a half thousand rubles, electric options The devices are much more expensive. Using a spray gun makes it easier Painting works, whitewashing with its help is carried out much faster, while the supplied jet easily penetrates into hard-to-reach places.
- The lime whitening machine is used to treat large surfaces. Its operating principle is the same as that of a spray gun; its capacity can be up to 100 liters.
- A spray bottle for whitewashing can be used the same one that is used for spraying plants. Only its capacity should be in the range from 5 to 15 liters.
Any devices for mechanizing the whitewashing process can reduce repair time and ensure uniformity of lime layers. The labor intensity when using them is minimal, any person can understand the structure of the device and its principle, and the possibility of painting arises high ceilings without using a stepladder.
When using spray guns, lime consumption is also reduced, since large drops do not fall on the floor and furniture. The only condition is to use a high-quality solution without impurities or lumps, otherwise the device may clog and fail.
This is what the equipment listed above looks like
Manual spray gun Electric spray gun Spray gun for whitewashing Apparatus for whitewashing
Do-it-yourself whitewashing rules
To process the desired surfaces with lime, no special skills are required; even using this material for the first time, you can easily learn during the work process. But it is still necessary to take into account some nuances and then the repair will be fast, safe and of sufficient quality.
Whitewashing the walls
Walls can be whitewashed with lime both indoors and outdoors. Whitewashing the outside of a house is most quickly done with a spray gun. In order for the lime to adhere well, not change its color and not swell, it is necessary to first prepare the walls.
Rust stains, dirt, and greasy areas are removed from surfaces. If there are cracks, they need to be treated with a primer; good adhesion of the lime to the walls is ensured by treating them with a metal brush. Lime does not adhere to paint, so the layer of old paint must be removed.
Whitewashing is best done in cloudy weather; bright sunlight distorts perception and does not allow you to achieve even strokes. When using a spray gun, you need to hold it at an angle of 90 degrees to the wall, this will ensure less consumption of the solution and evenness of its application.
The video shows how you can whitewash walls with lime using a spray gun:
Whitewashing the cellar
The use of lime to treat all surfaces in a cellar intended for storing food is considered the most the best option. Lime destroys all microorganisms, disinfects the room, prevents the appearance of fungus, due to these factors the shelf life of products increases, vegetables do not rot. Lime is resistant to moisture, so it protects the walls of the cellar from moisture.
The cellar is whitewashed with a fairly thick solution of lime; you can use both spray guns and brushes. Spraying devices are usually used in large areas, but when using them, safety precautions must be observed.
The spray gun creates clouds of tiny lime particles; in a closed space, such as a cellar, this cloud negatively affects the mucous tissue of the respiratory organs and eyes. To avoid harm to the body, you need to wear glasses and a respirator that fit tightly to your face.
If the cellar is being whitewashed for the first time, then it is advisable to apply a second coat after applying the first layer and drying it.
Whitewashing the stove
Some private houses, dressing rooms and other premises have brick walls. Whitewashing with lime is the most practical option their quick repair. The surfaces of the stove quickly become dirty with soot and grease and therefore require regular updating.
Lime can be used at any time, especially since a brush can also be used for small surfaces. In order for the solution to be easy and even, the oven must be cooled and all greasy stains removed sandpaper or a scraper.
How to whitewash and decorate a stove with lime can be seen in the photo below
Oven No. 1 Oven No. 2 Oven No. 3 Oven No. 4 Oven No. 5
Whitewashing the facade
The easiest way to whitewash the facades of buildings and houses is to use spray guns. Windows, doors, decorative elements you need to close it, and you need to start whitening from the highest points, moving down. It is advisable to whitewash external walls in calm, cloudy weather.
Whitewashing the ceiling
Separately, whitewashing the ceiling with lime is carried out if the remaining walls have wallpaper or other finishing material. If you plan to change the wallpaper, you must first remove the old ones, then whitewash the ceiling and only then re-paste the walls. All old coverings need to be removed from the ceiling, cracks must be repaired, and dirt must be cleaned. Rust and mold can be easily removed with a solution of copper sulfate.
Lime milk applies most easily and evenly to a wetted surface, so it is advisable to moisten the ceiling. After preparing the ceiling, you need to cover the floor, furniture, and windows with waterproof materials, since lime splashes well and is difficult to wipe off when dried.
The ceiling is whitewashed in two layers. The first layer begins to be applied from the window, making strokes perpendicular to the light. The second layer is applied to the still wet first layer, strokes are made in parallel sun rays. This whitewashing technology ensures the adhesion strength of the lime and the absence of streaks.
Repair lessons or how to whitewash a ceiling with your own hands:
Tree processing
Whitewashing tree trunks with lime solves several problems at once and is carried out in spring and autumn period. Treating trees in the spring protects the wood from pests and prevents the sun's rays from burning the bark. In autumn, lime is used to reduce the impact of temperature changes in winter.
Grown trees are whitewashed; young plants are not treated, since lime clogs the pores of the bark and thereby disrupts the growth processes. Before processing, you need to remove all dried parts and clean areas with rotting bark.
For whitewashing, lime is used in combination with copper sulfate. Two kilograms of lime are diluted with 10 liters of water, after preparation, 400 grams of vitriol are added to the solution.
Chicken coop treatment
Whitewashing the chicken coop allows you to disinfect the room. It’s even better if the lime slaking is carried out in the chicken coop itself, naturally without its inhabitants. The vapors released when lumps of lime are dissolved penetrate well into all cracks and destroy bedbugs, ants and other small insects.
In summer, it is advisable to whitewash the walls in the chicken coop at least twice, this will interrupt the breeding chain of many insects. Additionally, before whitewashing, walls can be treated with a weak bleach solution. The practicality of using lime for treating animal premises is rated 5 points; it is an inexpensive material, environmentally friendly and has the most optimal disinfection properties.
Consumption for whitewashing
Lime milk is usually used to whitewash walls and ceilings in a house. The consumption of lime for every 2.5 square meters is approximately 0.5 kg of lumps of lime, diluted in the appropriate proportion with water.
Features of painting and putty on lime
If you apply lime milk directly to the layer water-based paint, then it may happen that the quality of the repair will not satisfy you.
The lime adheres to the paint and runs with it, and once it dries, it is likely to cause blistering.
To prevent this, you must first wash the surfaces with paint with soap and water and a brush and then treat them with a stiff brush for better adhesion of the compounds.
Putty is used during repairs to good alignment surfaces. If you plan to putty on walls covered with lime, you must first remove old layer. Alternatively, you can remove all swollen areas with a scraper and apply a primer, after which the lime can be easily removed.
How to remove lime from floors and walls
During the process of whitewashing surfaces with lime, stains inevitably remain on all surfaces. The easiest way to remove them is while they are still fresh; this will require water and a sponge; treatment with water is carried out several times, this allows you to remove all the white stains.
If a layer of old lime needs to be removed to apply other materials during repairs, then the following points must be adhered to:
- Wet all desired surfaces with water using a brush or spray gun.
- Wait until thoroughly wet, then remove the lime with a hard, metal sponge or scraper. If there are several layers of lime, you will have to wet it several times and also use paper clips several times.
- If you are not afraid of dust in the room, then the process can be speeded up by using an angle grinder with a special attachment.
- It is imperative to use goggles and a respirator, since dust during work can negatively affect the eyes and the condition of the respiratory tract.
The removal of old lime can be facilitated by the use of special liquid products, under the influence of which the whitewash layer dissolves and easily comes off from surfaces.
These include:
- Guard Industry product
- Decap' Sols Plus Guard.
- Tool Space.
All products contain acid, so you need to protect your hands and eyes. Some people also use diluted hydrochloric acid, but since it is hazardous to health, it is not recommended for use.
Prices for whitewashing
The use of whitewash is considered the most inexpensive option repair. Minimum amounts are charged for whitewashing and construction crews. Usually whitewashing walls with an area of one square meter and using one layer starts from 50 rubles.
Naturally, the cost varies greatly and depends on many factors - surface contamination, cleaning application, application of lime in several layers. If you know your square footage, then it will not be difficult for you to calculate the approximate cost of all the work.
In conclusion, we suggest watching the video - useful tips Professor Chainikov during whitewashing: