It is very disappointing when, literally immediately after the repair, the neighbors from above drown you. How from the ceiling, so that it becomes perfectly white again?
main reason the appearance of yellow spots after flooding - these are not completely dried floor slabs. Even if the plaster dries completely, yellowish stains can still remain. In addition, the reinforcement in the floor slabs can begin to rust, which makes the stains even brighter.
Of course, the best way out of this situation is to present an invoice to a neighbor for a damaged repair. However, it often happens that you have to deal with the consequences of the flood yourself. How to remove rust spots and how to remove yellowness?
Removing yellow stains after flooding
The first thing to do if you are flooded is to turn off the electricity in the panel. You don't know how far the water is from the wiring. After that, proceed to the removal of yellowness.
The first method that can be used is the mechanical removal of stains. This option does not require the use of chemicals and is completely safe. You will have to clean off the paint, putty, remove wet plaster with a spatula. All damaged surfaces should be thoroughly cleaned.
After cleaning, you need to wait a bit until the ceiling dries completely. After that, a primer is applied and the ceiling is covered finishing putty. All defects on the putty are polished with sandpaper. It remains only to repaint the dried ceiling.
If you plan to whitewash the ceiling, it is best to apply two coats of whitewash after the flood. You can just whiten the yellow spot in two layers, but only if it is small.
Can . You can use whiteness or any other product that contains chlorine. Many even use the duckling toilet product.
In order to remove yellow stains with bleach, you must:
- Clean the surface of damaged finishing materials spatula.
- Pour whiteness into a container, prepare sponges.
- With a sponge soaked in bleach, you should carefully wipe off the yellowness, moving from the edges of the stain to its center.
- When the sponge turns red, it needs to be washed or changed.
- When the ceiling dries after processing, you can begin finishing work.
Preparations for removing yellow spots
Instead of bleach, you can use some other means. Which also effectively remove yellowness.
For example, diluting 250 g in a liter of water blue vitriol, even rusty threads can be removed. They must work with gloves, wiping the traces of the flood with sponges. Many owners use warm blue vitriol in such cases. To do this, dilute 500 g of vitriol in 5 liters of water and heat the solution to 70 degrees.
If copper sulfate does not work, then 250 g of grated grated is added to the solution. laundry soap, as well as 40 g of drying oil. The resulting solution wipes the stains.
More dangerous, but the most effective method- This is the treatment of stains with hydrochloric acid. Followed by 3% solution of hydrochloric acid warm up to 40 degrees, and then rinse the stains with it.
You can also use a homemade mixture to remove traces of the flood:
- 2 parts of chalk and part of citric acid are mixed.
- A part of pharmacy glycerin and a little water are added to the resulting mixture.
- The mixture is thickly applied to the stains on the ceiling and left for 40 minutes.
- It remains only to wash the ceiling warm water and repeat the procedure if necessary.
Rust control
To get rid of rusty streaks after a flood on the ceiling and walls, copper sulfate is again useful. The agent is poisonous, therefore it is necessary to work in the means personal protection and with windows open.
Bright red stains can be removed. You will need:
- Copper sulfate 10%.
- Brown laundry soap 72%.
- Bone glue.
- Drying oil.
- Sponges or brush.
You should grate a bar of soap on a grater. And then mix the chips with 250 g of vitriol. 200 g of glue and 50 g of drying oil are also added there.
Before work, you need to carefully clean the drips to the possible depth. Then the prepared mixture is applied with a brush or sponge to the stains.
You can do it easier if rusty streaks appear on the ceiling. To do this, the affected area is treated with vitriol, then primed, puttied, painted over with paint. Best to use oil paint, which forms thick film. Rust will not show through this film again. If the ceiling was painted over before the flood water-based paint, then you can use it for repairs.
Plastic and stretch ceilings
PVC ceilings are prone to mold. The voids are perfect place for the spread of fungi. A temporary measure, if it is necessary to remove yellowness and mold from the stretch ceiling, is a household bleach with chlorine of the Whiteness type. Such products help to quickly clean surfaces, and their fumes inhibit the development of fungi. But completely with the help of bleach on a stretch ceiling, traces of mold and yellowness cannot be completely eliminated. There is only one way out - repairing the ceiling. Otherwise, polymer ceilings are very unpretentious, and you can simply wash them even with a dishwashing sink or washing powder.
Drywall
If the plasterboard ceiling is flooded, then you first need to clean the surface with large sandpaper as deep as possible. Surrounding objects need to be covered, as a lot of dust will fly.
Then, using a spatula, a starting putty of medium viscosity is applied. After it dries, the finishing mixture is applied. When the ceiling is completely dry, it must be sanded. This time, grinding is done with the finest sandpaper.
When the surface becomes perfectly smooth, it needs to be primed. But doubts may arise when it comes to painting. Perfect solution- this is painting the entire ceiling so that there are no streaks left. But many owners repaint only the area affected by the flood. At the junctions of the ceiling and walls, brushes should be used so that there are no islands that are not covered with paint.
Stains after painting
Sometimes after the repair it may turn out that the yellowish stains still remain. Most often, the decision is made to paint the surface again. But it doesn't really solve the problem. How to neutralize the error in the work and what are their causes?
If the paint was too thick, then it could lie unevenly. It is necessary to choose a liquid paint that will lay down in a thin and even layer. If the work was carried out too slowly, then the paint could harden before the second layer lay down. So all the joints between the strokes become very noticeable.
If the roller was too fleecy, then the paint layer could lie unevenly. You only need to select quality tools for work. Also, the fault of poor painting can be a poor-quality primer.
If the work was carried out in poor lighting, it may turn out that they were performed poorly. The work area must be well lit. You can not apply paint in only one direction.
To correct errors, you can grind with a thin sandpaper all flaws. Sand until the surface is smooth.
You can apply the finishing mixture again, and then repeat the light sanding. It needs to be primed twice for painting. After priming, the ceiling should be painted over twice so that yellowness and rust do not show through.
Prevention
It is also necessary during the overhaul to make sure that the ceiling is well insulated and check how far the pipes run. Be sure to monitor the condition of pipes and sewers, replace them in a timely manner. The simplest solution is plastic ceiling or stretch, which is easy to clean.
Clogging of ventilation should not be allowed, and you should also organize your life in such a way that there are no various incidents.
Leaks on the ceiling, formed after flooding with water from the upper floor or a leaky roof, unfortunately, are not uncommon. The ceiling immediately loses its aesthetic appearance and requires repair. Before proceeding with the repair, it is imperative to eliminate the cause of water leaks, otherwise it will only be that the repair made may be in vain, and another rain can bring all the work down the drain.
I, too, was not spared the fate of doing repairs to eliminate smudges on the ceiling by the window as a result of a roof leak. Finally, the roof was repaired, and it was possible to do repairs. This is what the ceiling looked like before the renovation.
First you need to use a narrow metal spatula with a blade width of 4-5 cm to remove damaged paint or whitewash to the plaster. The working edge of the spatula before work must be sharpened like a knife blade, with a bar or sandpaper. Then it will be easier to work. The steel plate of the spatula should be thin and elastic, bending during operation, as in the photo.
If the plaster moves in places, then it must also be removed. There is a simple repair rule: everything that does not adhere well to the wall during its repair must be removed. If there are cracks on the surface to be repaired, but the plaster holds firmly, then they must be embroidered, that is, along the crack line, make a rectangular groove with a depth of at least 5 mm. If the crack is simply rubbed and painted over, then after a while it will appear in the same place again.
Since, after removing the whitewash, the plaster had to be removed in some places, it was decided to first apply a layer of Rothband. This is an excellent leveling mortar, which is recommended to be applied in a layer with a thickness of 5 to 10 mm, it adheres well to the surface of the ceiling, is moisture resistant, and is suitable for leveling walls even in bathrooms. Although the recommended application layer is indicated by the manufacturer from 5 mm, as my experience has shown, Rotband fits perfectly and holds firmly even when applied 1 mm thick. There were also traces of rust in several places on the wall. There was no copper sulphate and other chemicals at hand, so I hoped that with the help of Rotband it would be possible not only to level the walls and ceiling, but also to get rid of rust spots.
But the expectations were not justified, and in several places after the hardening of the Rotband, traces of rust spots appeared. While the Rothband was liquid, the rust passed through the water into its layer.
The question arose again, how to get rid of rust stains. I came to the conclusion that if you cover the places where rust enters with a waterproof film, then the surface of the wall can be puttied with water putty without fear of rust stains penetrating into it.
PF paint and some epoxy were available. I decided to use epoxy resin, because after a couple of hours after application it hardens and repairs can be continued.
It is difficult to apply epoxy to Rothband, as it is very thick. But if a little acetone is added to the epoxy resin after mixing the components and mixed, then it becomes quite fluid and well absorbed by porous materials. It remains only to paint over rusty spots with a brush. If you dilute any paint or varnish of the NTs or PF type with an appropriate solvent to a liquid consistency, then they are also suitable for isolating rusty spots, but it will be possible to continue the repair only a day after the applied coating has completely dried.
After coating the rust spots with epoxy, they showed up even more, but now they have become reliably covered with a waterproof film. After the epoxy has hardened, you can proceed to finishing putty these places without fear reappearance rust spots.
Till epoxy resin hardened, the obvious bumps and protrusions of the rotband on the surface of the walls and ceiling were removed with sandpaper.
While doing repair work on local areas of the ceiling when removing a layer of paint, when performing grinding, to prevent the spread of dirt and dust throughout the room, I substitute the tray ( plastic cover from an old record player). True, it’s not so convenient to work, but almost all the dirt remains in the tray.
If you wish, you can not buy a new one, but make your own cornice to your liking, as described in the site article
Flooding from above most often does not pass without a trace, and, at least, on the ceiling below the located apartment, depending on the finishing material, color stains or damage remain. Consider how to remove yellow spots on the ceiling after flooding - these are the minimal consequences when the leak did not lead to a more serious amount of repair work.
Removing stains on a stone bleached ceiling after a leak
This type of execution and finishing material is widespread, and successful cleaning of the ceiling from stains after a leak in this case is a rather time-consuming operation.
Yellow spots on the whitewashed ceiling after flooding are eliminated in several ways, but always only after the causes of the leak have been eliminated. As a rule, a combination of several operations is used, since stains can also be accompanied by other damage caused by flooding.
Repair of the ceiling finish based on the mechanical method
If a leak on the floor above caused a layer of putty or plaster to peel off, then these layers must be removed. The bubble of the shell is pierced with a hammer, and then the base is cleaned of the exfoliated finish with a spatula. If color stains have spread to an undamaged finish, then they are removed in an acceptable way - surface streaks on the putty are scraped off, deep impregnation is cut down to a layer of plaster. After cleaning, the substrates are allowed to dry.
If there are areas on the floor with bare steel reinforcement or traces of rust from its close location, then it is necessary to isolate the steel from the materials of the upcoming finish. First of all, concrete with traces of rust is tapped with the sharp end of a hammer to reveal fragments of closely spaced reinforcement that has lost its grip on the concrete of the slab.
Then visible areas steels are cleaned with a stiff steel brush or coarse sandpaper, and then covered with two coats of paint (ideally with a rust converter), being careful not to paint over the concrete around them. Thus, the reinforcement is protected from contact with residual moisture in the slab and corrosion, which otherwise will come through the putty layer within a day or two after its application, since the leveling mixture contains various technological additives that oxidize iron.
Important! It is impossible to cut out the bare reinforcement in the slab - it is constituent element reinforcing mesh and even in this form continues to perform some of its functions.
After the protective layer of paint on the reinforcement has dried, the defective areas of the surface are primed with an aqueous solution of latex in a ratio of 1: 3 or another ready-made composition suitable for this purpose.
If at the beginning of the operation, after removing the exfoliated finish, open reinforcement is not found, then the repaired fragment of the surface after drying is only primed. This is done in order to stick the dust to the base and increase the adhesion of the leveling mixture, which will be applied to it after the primer dries.
Moisture-resistant cement-based leveling compounds, including tile adhesive, are well suited for sealing potholes in the ceiling. The composition prepared according to the instructions on the package is applied in layers - each next layer is laid after the previous one has cured, but before it dries, it should be noted that the last laying should not be flush, as it will still be finished with gypsum-based putty.
Finishing leveling, depending on the qualifications of the performer, is carried out in one or two layers over the hardened cement composition. Grinding of the repaired area is carried out after the final drying of the gypsum putty and the layers under it - this will be evidenced by the uniform pure white color of the surface.
Before painting the area, it must be primed. It should be borne in mind that a freshly painted surface will differ from the rest of the area in greater color intensity, even if the ceiling is white - there is dust on the old emulsion, the directions of movements of the brush, roller or spray gun will be different, etc. Therefore, if the goal is to remove yellow spots on the ceiling without a trace, then you will have to paint the entire surface of the base, and, depending on the quality of the emulsion, in 2-3 layers.
Ceiling repair with chemicals
When the flooding in the apartment on the floor above was quickly eliminated, or the waterproofing of the floor there was of sufficient quality, the consequences of water leakage through interfloor overlap can appear only in the form of brown stains on the ceiling - there may be no damage to the plaster and putty.
When choosing a method, as in this case, one should proceed from the fact that it will not be possible to get rid of yellow spots without a trace only by washing - they will have to be removed by a set of measures.
yellow spots, remaining on the ceiling after flooding, have many components, universal remedy for the neutralization of which does not exist. Make chemical analysis these colored stains for their successful removal is absurd, so the spots on the ceiling after the flood can be temporarily made as invisible as possible, and then removed completely. Remove such stains if there is no time to remove them more efficiently mechanically need in stages.
Cleaning the ceiling of this dirt begins with removing the damaged emulsion layer with a spatula - this is easy to do while the ceiling is damp and the paint is removed in whole strips. If the paint is left, and all subsequent operations are carried out on top of it, then it will peel off anyway, and the texture of the repaired area will be ugly.
Then, after the ceiling has completely dried, the surface is degreased with a nitro solvent, for example, brand "646" or "647", which will remove possible contamination from the base with oils that have got there with water leakage.
Degreasing in the future will allow you to clean stains from the ceiling not only superficially, but also in the thickness of the leveling layers. The operation is carried out with a soft rag made of natural fabric, sufficiently abundantly moistened with a substance - colored stains are wiped over the entire area.
After degreasing is done, get rid of coloring pigment spots. This is done using any detergent. household chemicals with the content of chlorine - bleaches "Belizna", "AS", "Domestos", chlorine-containing compounds "Dichlor" and "Chlorin". The presence of chlorine in the preparation is indicated by marking Cl on the package.
These or identical products will reduce the brightness of yellow spots on the ceiling, discoloring them to some depth. To do this, protect the floor under the stain with a sheet of cellophane, put on goggles and pour the solution into the bath. Having moistened a piece of foam rubber in a chlorine-containing agent, the sponge is briefly applied to the dirty area to soak it with bleach. Prolonged impregnation can lead to delamination of the putty layer, which will then have to be removed, so the condition of the impregnated area should be monitored.
Periodically, the swab is squeezed out and washed in a bowl. When a significant loss of color is visually noticeable on the contaminated surface with the cessation of progress, the procedure is stopped, and the ceiling is given another hour of time for the soaked bleach chlorine to complete the reaction with the pigments.
Important! When working with bleaches and solvents, in order to avoid chemical burns, it is necessary to use personal protective equipment (goggles, a mask), and ventilate the room.
After an hour, washing the ceilings is continued, but using ordinary detergents - washing powder, laundry soap, etc. The purpose of this stage of the procedure is to remove contaminants of a different origin from the surface, as well as chlorine bleach by wiping with a clean rag with applied detergent.
The work is completed by cleaning the base with a piece of foam rubber wetted in clean water until the detergent residues are removed from the surface.
The final result will be visible after the ceiling dries - after 1-2 days. One should not expect a 100% result and continue to wash the ceiling after drying, since it is impossible to remove yellow spots in this way without a trace. But the contamination after such treatment will become much less noticeable, especially after masking the washed area with a layer of emulsion of a selected color, and performing a more thorough cosmetic repairs can be postponed until better times.
In addition, when painting ceilings treated in this way, surprises in the form of endlessly appearing dirty-red stains are excluded - after one coating of the surface with a primer, the number of emulsion layers required for finishing will be minimal.
Repair after flooding plasterboard ceiling finish
There is a moisture resistant variety drywall sheets- GKLV, which is used to level the bases in rooms with high humidity. But even this material is not designed for prolonged direct contact with water, since gypsum is hygroscopic.
There is no specific answer to the question of how to wash the plasterboard ceiling when flooded from above. If GKLV was treated with a hydrophobic composition before installation, the duration of contact with water was short, and the GKLV finish did not have time to deform, then how to wash the ceiling depends on the finishing material over drywall.
How to deal with a painted plasterboard ceiling
The emulsion will have to be carefully removed with a spatula while it is still wet, being careful not to damage the reinforcing shell of the GKL. Then the finish is allowed to dry, after which it is primed with an aqueous solution of latex and, again after it has dried, a layer of finishing gypsum putty is applied. finishing sanded, primed again and coated with an emulsion of the selected color. If you paint only the repaired area, then it will stand out against the general background in any case.
How to get rid of stains on ceiling wallpaper
If wallpaper was glued on top of the ceiling, including plasterboard, then they, as a rule, peel off from the wet base and also become covered with dirty yellow spots. It will not be possible to wash such wallpapers to their original state, but if the GKL base was saved or repaired, you can glue them in place, and then paint the ceiling completely. Spot repair of wallpaper (replacement of a strip or section) will be visually noticeable, even if the material is from the same batch.
Divorces on GKL without finishing
The situation with stains on the drywall itself is not relevant - GKL is almost never used without decorative finishes, therefore, after flooding, it is not the appearance of spots that is important, but the preservation of strength characteristics and geometry by sheets. If the section from the GKL has become unusable, you can replace both the entire sheet and its fragment if it is small in area.
The replacement of a fragment begins with cutting out the defective area and attaching bars or pieces of a cd-profile to the base for mounting a new fragment on them - the same in configuration and thickness.
The GKL insert is cut out in such a way that after installation in place there are gaps of 3-5 mm around the perimeter. After attaching the insert to the base, the joints are aligned flush with the ceiling - the edge is wedged with wedges in the opening, leveled in height along the perimeter. Then the joints are filled with a special mixture for plasterboard joints.
A day later, after the composition has cured, the wedges are removed, and the nests remaining after them are also filled with putty. Then glue the joints with sickle tape and apply finishing layer plaster putty.
Restoration of PVC tile ceiling cladding after a leak
PVC tile is a waterproof material, and flooding does not change its characteristics, but yellow spots remain on it after leakage from above. It will not work to wash the tile to its original state - pollution also penetrates into the structure of the material due to its low density. But the way to get rid of the consequences of flooding is not technically difficult to perform.
With a piece of foam rubber soaked in water with detergent, dirt is washed off the finish as much as possible (chlorine-containing compounds can also be used). Then the tiles are primed with a latex-based composition to form a film over the remaining contamination and, after the primer has dried, painted with emulsion paint in any color you like.
Restoration of stretch ceilings after flooding from above
Water leakage does not pass without a trace even for stretch ceilings - yellow spots can appear even after a long time after a slight flood, which went unnoticed under the fabric. The way to eliminate them depends on the material of manufacture of the stretch ceiling and the nature of the pollution.
If the ceiling is elastic synthetics, a film, and the cause of yellow or other color spots is moisture, then the easiest way is to apply one of special means for cleaning stretch ceilings (solution, spray, gel).
The method of use is stated on the packaging of the composition, and the effectiveness of the operation depends on the quality of the product and the conscientiousness of the cleaning.
In the absence of such a means, improvised materials are used.
For example, a swab is made of cotton wool and gauze, which, after wetting in a ten percent solution ammonia wipe the spots, going beyond their borders by 10-15 cm. If, after such cleaning, the area differs from the main background in color, then it is necessary to wash the entire ceiling using ordinary detergents to remove dust and dirt from them.
Leak spots on the film stretch ceiling can also be removed using soda ash- five percent water solution applied to stains and after drying, washed off with warm clean water.
Due to the smooth surface structure, removing stains from an elastic stretch ceiling is easier than from a textile or fabric one. You can use most household detergents (soaps, gels, powders, pastes), with the exception of aggressive acids, alkalis and solvents.
If the material of the stretch ceiling is textiles, then the same means are used, but the process will require more time and effort. However, cleaning even a fabric stretch ceiling will be ensured if the cause of contamination is water - we wipe and wash textiles to the desired result, using only tampons with a soft fleecy surface and delicate detergents.
In case of more serious contamination, in order to avoid damage to the material, it is better to turn to professionals.
Conclusion
It is impossible to avoid the problems associated with the removal of yellow stains from leaks, but you can minimize the effects of flooding by performing internal waterproofing ceilings. If the problem still arose, it is solvable, moreover, on their own and with a guarantee of success.
The main gist of the article:
- Yellow spots on the ceiling after flooding are only a cosmetic factor.
- Contamination of the ceiling after a leak is completely removable on its own.
- Right choice technology to eliminate divorces is the key to success.
- Rationality of actions will save time and effort.
- If the cause of the pollution of the stretch ceiling is serious or unknown, it is better to turn to professionals.
I greet the distinguished assembly and ask for advice. Recently made good repair in the apartment, in particular, he leveled and painted the ceilings with rather expensive paint. And now, due to a pipe break at the upper neighbors during the start of heating, all my work and expenses were in vain. Large yellow stains flaunt on the surface in one of the rooms. Tell me how to remove yellow spots with minimal cost?
I don’t want to quarrel with my neighbors and I won’t - they are very elderly people. They have no money to compensate, and they themselves will not do such a job. I'll have to do everything again with my own hands.
Alexander
How to remove yellowness and smudges after flooding
Hello, Alexander. You're out of luck, sorry. And to tinker to return the ceiling to its former appearance, it will take a lot.
The main thing is that this situation does not happen again, so it is desirable to achieve management company revisions and overhaul all old pipelines in the house.
Ways to eliminate yellow spots
The nature of the spots may be different. If it's just dirt from washed out cement, then getting rid of it will be the easiest. Worse, if water oozed through old rusty pipes, metal mortgages and fittings, causing them to corrode and washing all of the above to the surface.
It is important. There are several ways to get rid of yellow spots on the ceiling, but before applying them, you must wait until the ceiling is completely dry and clean it to the ground from the old coating.
Method one - putty
Whatever your ceiling is finished with, the coating from the damaged area will have to be mercilessly cleaned off using a spatula or power tool. It is desirable to free the ceiling even from plaster. Then it must be rinsed with clean water and allowed to dry.
Remove the consequences after flooding and whiten the surface
Further instructions are:
- Treat the exposed area with a deep penetration primer;
- After it dries, level the surface with putty. Its appearance and the number of layers depend on the thickness of the finish on the undamaged areas, since you need to bring the entire ceiling to one level. In any case, a thin layer of finishing putty is applied last;
- Sand minor imperfections plaster mesh or sandpaper;
- Reapply primer;
- Paint the repaired area the same color as the rest of the ceiling.
We will be useful to know the answers to questions about how to remove yellow spots on the ceiling as residents apartment buildings and owners of private cottages. In the first case, neighbors or faulty plumbing system. Secondly - malfunctioning roofing system especially during periods of heavy rainfall.
There are several effective ways, allowing you to remove yellow smudges from the ceiling without replacing the coating. The choice of method depends on the type of ceiling.
Plastered ceiling - simple ways to get rid of yellowness
An emergency situation that causes a flood and, as a result, rusty stains on the surface of a plastered ceiling, is not a sentence. To assess the extent of damage, it is necessary to wait for the coating to dry.
Usually, yellow marks do not appear over the entire surface, but in separate areas:
- joints between ceiling and walls;
- electrical outlet areas;
- battery placement, etc.
It will be necessary to work with these areas, returning the former aesthetic appearance to the ceiling. You can restore the coating and remove stains by acting in the following sequence:
- The area with a rusty stain must be removed from the plaster in a dry form, carefully working with a spatula. The stain is cleaned to the very base of the ceiling.
- Turn off the electricity if you have to work with the electrical outlet section.
- The cleaned area is additionally sanded with sandpaper, achieving a perfectly flat surface.
- Dust is removed from the cleaned surface with a soft brush, using a respirator.
- To increase the adhesive properties of the base, it is primed with deep penetration mixtures on water based in several layers with breaks to dry each for at least three hours.
- Prepare a mixture for finishing the ceiling, apply it with a test layer on small plot for quality assessment.
- Cover the entire prepared area with a mixture for finishing in several layers.
After the plaster dries, the yellow stains should disappear. To consolidate the effect, the restored area is ground and painted in the color of the ceiling.
Insignificant barely noticeable traces on the plastered ceiling can be tried to remove with whiteness. To do this, the agent is applied to the surface of the ceiling to whiten the spots, after which the damaged area is sanded and painted.
Plasterboard surfaces - how to update
For drywall ceilings, floods are comparable to a real natural disaster. To get rid of yellow spots on their surface, you will need to make an effort. The sooner you can start restoring color, the greater the effect can be expected. Drywall is cleaned of stains according to the following scheme:
- The place of formation of a smudge is embroidered, removing the remaining moisture inside.
- Moisture-soaked area is cut off construction knife, shining a flashlight on the place of flooding to assess the damage done.
- Replace the affected sheets of drywall with new ones, observing all the subtleties of installing the material with priming, puttying and finishing painting.
Barely visible divorces plasterboard ceiling you can try to mask it with regular paint water-based or acrylic ceiling compositions. But to achieve the maximum effect, it will not be enough to paint over only yellow spots. In order for the coating to look harmonious and uniform, the entire surface of the ceiling will have to be updated.
Folk stain removal methods
To remove yellowed spots from the ceiling, you can prepare working solutions and pastes from improvised means. So, for example, it can be a solution of grass based on a liter of water, a glass of copper sulfate, a glass of bone glue and 250 g of grated laundry soap mixed with 40 g of drying oil. All ingredients are mixed and dissolved in water in a ratio of 1:10, after which they are used to treat smudges.
An easy way to get rid of yellow spots is with a lemon and chalk paste. For this citric acid mixed with chalk in a ratio of 1:2, applied to the contaminated area and left for half an hour, after which the mixture is removed together with the rust with a sponge soaked in water.
The situation is more complicated with the solution of the problem of yellow spots on hanging or stretch ceilings. Fabric canvases can be restored only with the help of specialists, stretch PVC the films can be processed on their own, but again, to return them to their previous form, they will need a special hot air gun, so without professional help Most of the time, it is not possible to solve the problem qualitatively.
