Before painting with water-based paint, bleached ceiling is primed. You should use a special means of deep penetration. After the primer dries, you need to test the old coating for strength. To do this, simply try to scratch the ceiling with a spatula. If the old coating is easily removed – it is better not to risk it and still remove it. If the chalk or lime soaked in the primer is held firmly, you can start painting.
Sometimes the owners of apartments and houses trim the whitewashed ceilings with a water-based emulsion without prior priming. This is also permissible. But only if a very high quality paint from a good manufacturer is used.
Basic rules whitewash
Of course, before starting such an operation as whitewashing the ceiling for the old whitewashing, the room needs to be prepared. Floors and furniture should be covered with technical plastic wrap. Wear rubber gloves on your hands. This is especially important if slaked lime is used for processing. As you know, it can corrode the skin.
All doors and windows before the whitewash ceilings water emulsion, lime or chalk must be closed. Otherwise, on the ceiling after drying, there will be ugly stains and stripes.
The use of special tools
Sprinkler gives a very thin layer of finish. Therefore, whitewashing the ceiling on the old whitewash with aqueous emulsion paint when using this tool should be made at least in three layers. This allows you to get a flat, completely white and clean surface. Before applying each subsequent layer, you must wait until the previous one dries completely. This rule, by the way, is observed both when using the spray gun and roller.
Should I trim the surface without pre-cleaning?
So, we found out – whether it is possible to whiten the ceiling on the old whitewash. In principle, it is allowed to do this. If all the above recommendations are observed, the owner of an apartment or house can eventually get a fairly even and beautiful coverage. However, unfortunately, it will be necessary to correct this finish later than if the ceiling had been previously cleaned.
Therefore, before making a decision on whitewashing without removing the old layer, it is worthwhile to think carefully. Lime holds on the ceiling pretty tight. Therefore, if the surface is finished just for her, applying a new layer without removing the old ones still has some meaning. But the chalk is removed from the ceiling is very easy – just with a rag and water. Therefore, in this case, it is more expedient to pre-clean the surface.
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How to whiten the ceiling on the old whitewash: 11 steps
You can whitewash the ceiling yourself, without the help of specialists. Among the huge variety and modern possibilities of regiment design, whitewashing is still the actual method of its finishing. Whitened ceilings are cheap and easy. In addition, sometimes you can freshen the ceiling, without touching the previous finishing layer, then the question arises how to whiten the ceiling on the old whitewash.
Whitewash can give the ceiling an aesthetic look and update the overall interior of the room. The main thing is to prepare the surface yourself.
When implementing this idea, you need to pay attention to the following points:
- Type of previously used whitewash;
- Strength of the old coating;
- Types of pollution of the old coating;
- The presence of cracks and chips of old whitewash;
- Type and functions of the repaired premises;
- Allergy to whitewash materials from residents;
- Features of work with finishing materials.
Whitewashing is a cheap and convenient material for ceiling decoration, which is why it is so common in repairs when decorating a ceiling.
In addition, before starting to work, you should decide whether the previous whitewash layer will be removed or it is easier to whiten over the old layer.
It is important to understand that if the old layer is peeling off or moving away from the ceiling with layers, then it is impossible to carry out a new whitewash on it, you must remove it.
If some layers of the old coating exfoliate, they must be removed, and the irregularities formed in their place should be leveled with putty or shpakril.
How to whiten the ceiling without washing off the old whitewash
Before you carry out painting work, you should protect the room from all sorts of pollution.
You can also whiten the ceiling with an old whitewash, the main thing is to do everything neatly and correctly.
A worker to protect themselves:
- Furniture is better to take out of the room;
- Large furniture and floor cover with a protective coating;
- Protect hands with gloves and eyes with special glasses;
- If necessary, use a respirator;
- Wear a hat;
- On the walls at the junction with the ceiling, you need to self-glue the mounting tape so as not to dirty them;
- The tile can not close, and then just wash (if not used paint).
Then, having decided to whitewash the ceiling on the old whitewash, check it for strength and align all cracks and crevices, you need to get rid of stains on the old surface.
If there are any kind of dirt on the ceiling, then after applying a new finishing layer, they will be visible again, so you must get rid of them.
To begin with, you should remove the dust and cobwebs from the ceiling using a regular cloth soaked in warm water. Further get rid of more serious pollution, such as mold, grease and rust. Mold wash off with soap and water or a special anti-mold remedy. If there is often high humidity in the room, that is, it is prone to mold on the ceiling, then it is better to pre-treat the entire work surface with an anti-mold solution.
Before whitewashing, most experts advise treating the ceiling with an anti-mold agent.
Rust should be scrubbed with a normal damp cloth, and then a 10% solution of copper sulphate should be taken along the cleaned place. Get rid of greasy stains with the help of ordinary soda, which is diluted in water in high concentration. After removing the stain, wash off the soda with clean water.
It should be noted that the yellow spots on the ceiling will also appear through the new clean white layer, so they need to be bleached. For this purpose, whiteness is added to the water and the stains are washed off with an ordinary cloth.
Ceiling whitening primer
In order for a new whitewash coating to lay flat and without streaks, the entire work surface must be prepared. To do this, the entire ceiling must first be primed.
It is best to use a deep penetration primer to ensure good adhesion of the new finishing layer to the old one.
Priming the ceiling is necessary both after removing the old whitewash layers before the new treatment, and when applying a new finish on the old surface covered with chalk or lime.
Before whitewashing it is necessary to prime the entire ceiling thoroughly.
The following tools are used for priming:
For priming it is better to resort to rollers, but if it is impossible to purchase this tool, others listed above are suitable. After the surface is treated with a primer, it will need to be dried. The duration of this process is indicated in the instructions for use of the primer and usually takes less than a day. This is the end of the preparation.
Glue for whitewashing the ceiling
To whiten the ceiling, it is customary to add glue to the whitewash mixture.
Joiner’s glue is an indispensable tool to add to the whitewash
The adhesive base leads to the following consequences:
- Prolongs the life of the white coating;
- The strength of the finishing layer increases;
- Complicated process of removing the old whitewash.
Considering all these points, it is best to add glue, because then the issue of repairing the ceiling in the apartment will be much less frequent.
In the pobelochnuyu mixture is best to add the usual wood glue, then the ceiling in the room will be able to maintain a presentable look longer.
Whitewash for the ceiling: types
When whitewashing the ceiling, first of all, you need to decide on its appearance. The choice is usually based on the cost of the materials used, the type of old coating and the complexity of applying a new finishing layer.
There are three types of whitewash common today with:
Chalk, lime and water-based paint – the main types for whitewashing the ceiling
The latter kind of literate would be called painting, but for simplicity, it can be attributed to the concept of whitewash. Chalk and lime whitewashing are more environmentally friendly methods, but chalk tends to crumble, and some people are allergic to lime. Aqueous emulsion paint gives the ceiling a more aesthetic look, but after such treatment the surface does not “breathe”.
It is important to know that it is impossible to whiten the ceiling with lime if the old layer is treated with chalk, and, on the contrary, it is not allowed to chalk the old limestone layer, as there will be ugly divorces.
For whitewashing with chalk, you need to prepare a solution of 3 kg of chalk and 30 g of wood glue, which must be mixed in 5 liters of water. It is better to use warm water to better dissolve the powders in it. Blue can be added to this mixture, as it will make the ceiling snow-white. The amount of blue will depend on the desired shade of the ceiling. In these proportions, 15–25 g of this substance is recommended.
To lime the ceiling, you need to prepare the solution as follows. About 2.5 kg of lime must be diluted in a liter of warm water, 100g of salt, previously mixed in water, is added to this composition. Similar to the chalk solution, blue is added to this mixture. After all procedures, the resulting concentrate is diluted with ten liters of water.
If you applied the previous whitewash with chalk, then the next one should be made of this material.
Aqueous paint is purchased in the store already finished. It should be noted that the consumption of such paint is large enough, and the shades can be different, therefore, to avoid spotting the ceiling, you must purchase paint with a reserve in advance. This type of treatment is best used for the bathroom, as the painted ceiling can be washed. To get the whitest ceiling you can cover it with acrylic paint Snowball, and you can paint the ceiling with different colors.
Apply whitewash on the ceiling plate should be in 2 or even 3 layers to completely cover the previous layers. In this case, the first layer should be applied perpendicular to the sun rays coming from the window, and the second one parallel to them. Apply a new layer with a brush or roller only after completely drying the previous one. If the technology is broken, then bubbles appear.
Whitewashing ceilings: stages
Ceiling whitewashing is not such a complicated process as it may seem at first glance. The main thing – to act logically consistently, so as not to miss anything important.
Each stage before whitewashing the ceiling is very important, as the quality of the whitewashed ceiling will depend on it.
Therefore, for simplicity of the repair process, the following steps of whitewashing the ceiling can be distinguished:
- Determine the type of old finishes (hold your finger on the ceiling, if white traces remain, then chalky, if there are no traces – lime;);
- Decide on the removal of old layers;
- Check the strength of the old coating, when deciding to whiten on the old finish;
- Remove all poorly attached layers of the old layer;
- Properly seal up any irregularities, cracks and cracks (the mixture is applied with a spatula perpendicular to the crack, and then the excess is removed with the same spatula, but in parallel, you can use shpakril);
- Wipe all irregularities with a pumice or sandpaper after the putty has completely dried;
- Remove all contaminants depending on their type;
- Treat the entire work surface with a deep penetration primer;
- Select the type of whitewash based on the type of old standing;
- Prepare pobelochnaya mixture or buy water-based emulsion in the store;
- Apply several layers of whitewash on the ceiling.
Carrying out the process in stages, the whitewashed ceiling will turn out beautiful and clean.
Whitewashing the ceiling and walls (video)
When repairing it is not at all necessary to spend money on expensive stretch or suspended ceilings. After all, you can create beauty simply and quickly with your own hands.
Sources: http://propotolok.guru/pobelka-potolka/kak-pravilno-belit-potolok-svoimi-rukami.html, http://fb.ru/article/251598/pobelka-potolka-po-staroy-pobelke- mojno-li-belit-potolok-po-staroy-pobelke, http://kitchenremont.ru/remont/potolok/kak-pobelit-potolok-po-staroj-pobelke