What threatens mold on the walls to health. Mold fungus in the apartment: what is dangerous and how to fight

After discovering a fungus, many people involuntarily ask themselves the question: is it dangerous? What is the danger of mold in the apartment and is it possible to somehow prevent its occurrence. But few people pay much attention to this and simply ignore the dark spots on the walls as a common occurrence, which is fundamentally wrong.

Green, white and black mold in the apartment

Mold can be different, but the most common is considered to be black, green and white. These three types are somewhat different from each other and have different effects on both human body, as well as on the premises.

The most dangerous is considered to be black mold in the apartment. It is very difficult to deal with it, so it is better to prevent such a phenomenon. Most often, it appears on the walls and in the corners of furniture, where it is warm and humid. Favorite place is the bathroom. In most cases, the affected areas can be found under the shower stall, between the walls and sides of the bathroom, as well as in the corners on the ceiling. Also, this type of mold affects walls and cabinets in apartments where there are large temperature differences. The main causes of such mold are:

Increased humidity in the house;
Sharp temperature changes;
Rare ventilation;
The presence of a large amount of steam.

The second most harmful is green mold in the apartment. It is relatively easy to deal with it, even though it is very harmful to health. The reasons for its appearance in the room are the same as the causes of black mold. Plus, this may be the result of long-term storage of food (for example, flour products). Dark green mold in the house is especially harmful.

white mold also harms health and provokes diseases if it is not eliminated in a timely manner. Its difference from other varieties is that it resembles fluff in its appearance. Because of this, microorganisms spread quite easily through the air only with light contact. It is necessary to fight it immediately, trying to minimize contact, since its spores can soar in the air for a long time, provoking allergic reactions in households. White mold, like green mold, often results from food spoilage.

Black mold is the most dangerous enemy of the apartment

What is the danger of black mold in the house? First of all, it kills the immune system, especially in children. Given that the children's body is still not very resistant to microbes, contact with this type of fungus can cause irreparable harm to the health of the child, provoking the development of serious diseases in adulthood.

As mentioned above, the favorite habitat of such a fungus is the bathroom, where a person spends a considerable part of his time.

In it, household members monitor their hygiene, therefore, in the presence of a fungus, they have to come into contact with bacteria with bare skin. As a result, microorganisms can not only settle on the body, but also affect internal organs.

It is difficult to deal with black mold at home, since even careful surface treatments do not always give a tangible result the first time. Sometimes you have to treat the affected area several times in order to completely eliminate the dark plaque, which, like a kind of beacon, signals a threat.

Harm of mold to human health

Mold in the room causes serious damage to the health of all households. Let's take a closer look at the question of how dangerous the fungus is for humans.

As a rule, pathogens spread throughout all rooms. As a result, all family members have to breathe them. For some, the body may not react in any way for a long time, for someone, symptoms of allergic diseases immediately begin with damage to the respiratory tract: the eyes turn red, the nose itches, the person begins to sneeze often, cough and runny nose appear. Allergies can cause Quincke's edema;
Settling on human skin, microorganisms can provoke dermatological diseases. Often washing in the bathroom, where there is mold, ends in the development of fungal infections and dermatitis;
Worst of all, when spores have a detrimental effect on the cells of the body, provoking their modifications into cancerous ones. Most often, this phenomenon leads to a large accumulation dark mold. Settling in the internal organs, harmful spores can cause the development of malignant neoplasms;
Sometimes a person can constantly experience drowsiness and weakness, pain in the joints, while not understanding true reason ailments. The ill-fated fungus in the apartment, which weakens the immune system, can also be to blame.

All of the above is the result of the development of the fungus in the apartment, so it is better not to take the situation to the extreme and get rid of it in a timely manner.

What is dangerous mold on the walls in the apartment?

Everyone should understand that the defeat of the apartment is a serious reason to think about repairs. So, if the spores hit the painted surfaces, then it is enough to wash them thoroughly with special solutions and treat them with special compounds.

If we are talking about a loose plastered wall, the situation is a little more complicated here: spores can remain in the pores.

Worst of all, when blackness hits the walls pasted over with wallpaper. There is nothing to help here - it remains only to rip off the wallpaper, putty, prime the walls and re-glue everything again.

Mold on the walls is also harmful because it can easily transfer to furniture. It is especially bad when it hits wooden parts, pretty spoiling them. appearance. It is still clear how dangerous the fungus is, more often its appearance is the result of insufficient sunlight and dampness, therefore it is recommended that poorly lit bedrooms be ventilated more often and, if possible, heated.

Folk methods for removing mold

You can deal with the problem different ways, here a lot depends on how hard he hit the room. Folk methods- an effective option if you contact them in a timely manner.

A good result is obtained by treatment with chlorine bleach, which destroys any form of microorganisms. But the effect will be noticeable only on smooth materials, wooden and loose surfaces will still remain infected due to high degree porosity;
Good result for smooth surfaces gives ammonia mixed with warm water in a ratio of 1:1. It is strictly forbidden to mix it with bleach due to the high toxicity of the resulting mixture;
You can get rid of fungus with safe baking soda. It is mixed with water until a slurry is obtained, which should be applied to the infected areas for several minutes, then rubbed with a brush and washed off. Soda is suitable for almost all materials without changing their original appearance;
Hydrogen peroxide also gives good result, but should be used with caution on colored surfaces. It also penetrates the structure of the material and the pores, killing all kinds of microbes. With such a treatment system, ventilation and thorough rinsing of the solution are not required.

Remembering the described folk remedies, you can also use purchased formulations. But keep in mind that in most cases they have a certain toxicity, so the work must be carried out with all precautions.

Mold is easier to prevent than completely eradicated. Therefore, keep your home clean, ventilate the rooms more often and avoid high humidity - and then the problem will not affect you!

Mold spots in the corners of the bathroom, fungal growths on the ceiling, wallpaper that has come off the walls and repairs ruined in the bud ... But in addition to the aesthetic side of the problem, there is also a medical one. These are the questions our fellow citizens ask when they find a fungus in an apartment: what is dangerous and is it dangerous at all, how to destroy mold, and is it possible to prevent its occurrence?

Hidden threat

Question one: what is the danger of a fungus in an apartment or house? The appearance of mold fungi, as they say, is fraught. The problem of their appearance is not only aesthetic. The fact is that a mycological formation that affects building construction(that's what the fungus is called in science), consists of the smallest spores. These spores can only be seen under a microscope. Surely you have come across colorful macro photos that capture amazingly beautiful “dandelions” and “corals”.

Fungi multiply very intensively - colonies appear one after another, mycelium penetrates deeper into the walls ... Neither stone, nor wood, nor concrete can stop it. Moisture feeds the fungus. In a humid environment, it blooms and thrives, having a negative impact on human health. So why are mold fungi dangerous in an apartment? Here is a list of the diseases they cause:

Asthma and allergic dermatoses - mainly allergy sufferers suffer here. Allergic people are contraindicated in a room with moldy walls.
Diseases of the respiratory system. Laryngitis and tracheitis, bronchitis and pneumonia - all these ailments can be provoked by fungi.
Migraine - headaches are often caused by an unfavorable mycological environment.
Diseases of the elderly. Microspores that enter the body have an extremely negative effect on the organisms of our grandparents, undermining health and suppressing immunity.

The question is natural: how to remove the fungus in an apartment or house? And to cope with it will help the knowledge of some theoretical provisions.

fight and seek

Before asking the question “how to remove fungi and mold in an apartment”, you need to find a source (or sources) high humidity. Mycogenesis occurs for the following reasons:

Incorrect operation of the ventilation system. If excess moisture does not leave through the air vents or vents, it settles inside.
Excessive tightness of windows and doors. Plastic windows good for everyone, but they cannot provide effective ventilation. The same applies to blind doors that do not have a ventilation gap in the lower part of the structure.
Violations of construction technologies. AT panel houses mold often settles in interpanel seams. The cause of mycolesions in this case is the high residual moisture content of sealants.

Now about how to destroy the fungus in the apartment - how dangerous it is, you already know. There are the following ways to deal with mycogenesis:

Mechanical cleaning of affected areas. If the mold on the walls or in the spaces between the tiles appears as small spots, it can be removed by wiping the lesions with vinegar or hydrogen peroxide. With more extensive growths, the fungus should be scraped off. If that doesn't help, scrape out a section of the wall, remove a piece of wallpaper, or cut a hole in the drywall.
The use of special equipment. The affected area can be treated with a fungicide a wide range actions.
Room waterproofing. If easy methods of fighting mold do not help to remove the fungus in the apartment - what is more dangerous is the ability to penetrate the walls through and through - you have to use "heavy artillery" in the form of applying a waterproofing composition to the walls with the subsequent repair of the apartment.

Is it possible to prevent the appearance of fungus in the apartment and where to go if it is found?

Vigilance is our weapon

As for the ways to prevent mold, there are three of them. Here they are:

Maintenance optimal humidity in room.
Regular check of ventilation operation.
The use of preventive antiseptics.

If the growth of mold in the apartment is due to violations of construction technologies, then the solution to the problem should be delegated to the specialists of the housing department. This is the answer to the question “a fungus appeared in the apartment - where to go if the ventilation is working properly.

Noticed the appearance dark spots and stains on the walls of the apartment? It's a ubiquitous mold. It is present everywhere and can germinate not only on food, but also on brick, concrete, wallpaper. What is dangerous mold in the apartment and where does it come from?

Causes of mold

Mold fungi are a complex and at the same time very adapted organism. The structural features of the mold are such that it can survive in any extreme conditions, and under the influence of irradiation and radiation it only becomes more aggressive.

For the development of mold in the apartment does not need special conditions. Only a certain amount of moisture is sufficient (from 70% and above) and moderately warm temperature(from +18 to + 25 °С). Help growth dangerous fungus poor ventilation, condensation, poor air circulation in the room. The main reasons why it appears dangerous mold in the house:

incorrect installation plastic doors and windows breaks natural circulation indoor air and contributes to the appearance of condensation and mold;
use as finishing material drywall sheets. In case of technology violations, they actively absorb moisture and do not dry out for a long time, thereby creating conditions for the development of mold;
various restructuring and redevelopment of the premises, excluding ventilation;
poor thermal insulation and waterproofing of external walls and corners leads to the formation of wet condensate during demi-season temperature fluctuations, uneven heating of the room;
old communications, wooden structures, damp cellars, leaky roof;
ceramic pots with plants can be a source of various dangerous species mold;
the fungus on the walls occurs due to the habit of drying washed clothes in the room;
cracks on the outside of the building, mold often settles in them, which gradually grows inside.

All this contributes to the appearance in the apartment of a large number of varieties, the most dangerous of which is Aspergillus niger. Why is mold so harmful to human health?

Human danger

Let's see how mold is harmful in an apartment or house. Developing, it is able to secrete thousands of spores that are in the air and can get into the lungs, bronchi, mucous membranes of the nasopharynx, and onto the skin. Mold affects human health in the following ways:

the development of the fungus entails the constant release of spores, which are the strongest allergen for the body. When ingested, they cause rhinitis, pharyngitis, symptoms of pneumonia, bronchitis, asthmatic attacks;
human immunity, being constantly exposed to mold, slowly but surely fades away;
the fungus can cause various diseases of the skin, which are expressed in the form of dermatitis and other inflammatory processes;
all species growing in an apartment are dangerous to humans, since the products of their metabolism are the strongest poisons that can cause poisoning, the development of liver and lung cancers, cardiovascular pathology, damage to the central nervous system. A fungus that affects a person with its own toxin can cause brain edema.
growing inside the body, the mold can cause dangerous toxic tissue necrosis. These diseases are common name aspergillosis, affects the bronchi, lungs, and other internal organs, and for a weakened person they become deadly. According to the latest scientific data, mold fungi perceive an organism with a greatly weakened immune system as a substrate, and in every possible way strive to master it, which leads to death.

The appearance of dangerous stains on wet wall surfaces in rooms, in the bathroom, in the toilet, in the kitchen leads to the fact that people, unwittingly, begin to come into contact with mold. Disputes in this case will be everywhere: on toothbrushes, washcloths, sponges for washing dishes, towels and other household items.

How to prevent the occurrence

The fight against dangerous mold formations in an apartment can drag on for an indefinite time. Mold reluctantly gives way to the won positions. Therefore, its appearance is better to prevent, and for this it is necessary:

eliminate all sources of moisture in an apartment or house: leaking taps, old pipes covered with plaque, replacing them with plastic ones;
do not dry clothes indoors, even if they are baby diapers. It evaporates a large amount of moisture, which settles on the walls;
check the general ventilation and repair it if necessary, install hoods in poorly ventilated rooms;
throw away or carefully process all things on which a specific “raw” smell has appeared;
reduce the number of old pots and flowers in the home greenhouse;
general ventilation holes can be cleaned with a special device, for this you need to connect the employees of the housing office;
carefully cover all cracks and openings in wet rooms with a special silicone paste with antifungal additives;
move all furniture away from the walls, creating conditions for free air circulation;
eliminate all external cracks in the building, since dangerous mold can easily grow inside, destroying brick and concrete;
clean outdoor drainpipes and repair leaking roof sections;
dry the room with fan heaters, reducing the overall humidity to 50 - 55%;
if the room has cold walls or corners that are regularly damp, it is necessary to insulate them and make good waterproofing.

An excellent preventive measure against a dangerous fungus in an apartment is regular treatment with a UV lamp, it should be done 2-3 times a year, including the device for 1.5 - 2 hours. good by chemical means to prevent the appearance of stains on any surface is the treatment with 3% hydrogen peroxide, 6% table vinegar, household bleach with chlorine, diluted 1:10 with water, ammonia, diluted with water 1:1.

For the same purposes, during repairs, various antifungal compounds and primers are applied over the plaster, which can be prepared independently, for example, a 1% solution of copper sulphate. The tree is also processed, even more carefully, as it is more destroyed by the action of the fungus.

All of the above methods will help you prevent the appearance of the fungus, as it is much more difficult to deal with it. To remove mold on the walls, you will have to remove a layer of plaster, drywall and treat with strong antifungal agents, or burn them.

The appearance of mold in an apartment is very dangerous for a person, it causes various diseases, can greatly weaken the immune system and lead to the development of oncology and death. Therefore, try to prevent excessive dampness and moisture in the living room.

In January, many people spend most of their free time at home.

During this period, the humidity in residential premises rises and, unfortunately, the ubiquitous fungus can make itself felt.

Walls, fabrics, books, toys, and even CDs - nothing is immune from home mold.

It seems that all that mold can do is turn our valuables into a pile of garbage. But the matter is much more serious.

What is mold?

House mold is a fungus. There are many types of mold. It can be found in the most unexpected places, both inside the house and outside. Mold is spread around the world by means of spores that are carried with air currents and cling to objects. In such a simple way, the occupier seizes house after house. Spores are a unique invention of evolution that helps the fungus survive difficult conditions and continue its genus.

Mold grows best in high humidity, warm and humid environments. That is why it often appears in well-insulated (energy-efficient) homes near windows where condensation accumulates. Many molds can grow on almost any surface, including paper, wood, and fabrics.

The most common types of house mold are:

Alternaria (Alternaria). A fungus of this genus lives in the most wet places. For example, in showers or around a leaking faucet in the kitchen.
Aspergillus (Aspergillus). gravitates towards bulk solids, including Construction Materials and some products, as well as to wet walls.
Cladosporium (Cladosporium). The fungus is able to take root both in cool and in warm rooms. Usually found on fabrics and wood.
Penicillium. The famous fungus starts on materials that have suffered from water. Available in blue or green.

Mold may look different. It has a different shape and surface. Color is white, black, yellow, blue, green. It is often colorless, that is, as if disguised as the color of the surface on which it has taken root.

How does mold get into a home?

Fungus spores that cannot be seen with the naked eye can be found anywhere, both indoors and outdoors. The spores enter the house by airing rooms or on clothes, on pet hair, on any item that you bring home. Opening windows, doors, and ventilation systems are the main ways fungus enters a home. Let's face it - it is impossible to avoid getting disputes into the house.

But if there are disputes in every home, then why isn't there mold everywhere? The fact is that mold will only start growing if the spores fall on the perfect spot. Place with high humidity and necessary nutrients. If this does not happen, then mold will never be a problem for you.

Mold is often found where there is water leakage or condensation - near windows, washbasins, showers, basements, etc. Moist materials are best for mold, especially paper, cardboard, and wood. Wallpaper, insulation materials and upholstery are also comfortable for an intruder.

Mold growth is usually noticeable - both in appearance and in bad smell in room.

The World Health Organization (WHO) reports that 10-50% of indoor spaces in Europe, North America, Australia, India and Japan are affected by dampness. This suggests that mold can be a massive global problem.

protection agency environment The United States (US Environmental Protection Agency, EPA) pays a lot of attention to the fight against mold. The EPA states that when mold appears in the home, you need to properly clean the mold, but be sure to deal with the moisture (for example, fix the faucet). Why is the EPA so concerned about mold? Due to damage to property or damage to health?

Possible health effects of mold

“Exposure to house mold does not always cause health problems. But there are people who are sensitive to mold,” say experts from the US Centers for Disease Control and Prevention.

At the same time, the CDC states that a humid environment is associated with increased risk certain respiratory diseases: “Excessive exposure to moisture on any materials in the home leads to the development of microorganisms, including fungi and bacteria. Consequently, spores, cells and their fragments, volatile organic compounds (VOCs) appear in the air. Moreover, humidity triggers the chemical and biological degradation of materials, which pollutes indoor air.”

Mold can produce many potentially hazardous substances. Allergens, irritants, mycotoxins - they all negatively affect sensitive people. The EPA states that exposure to mold can irritate the eyes, lungs, nose, skin, and throat, even in people who are not prone to allergies.

Allergy to mold is manifested by the same symptoms as other allergies caused by inhalation of foreign particles (for example, hay fever): runny nose, nasal congestion, itchy nose, sneezing, watery eyes. In addition, people with mold allergies and asthma are at increased risk of asthma exacerbations in humid environments.

Professor Stephen Spiro, head of the British Lung Foundation, said in a letter to MNT that the presence of mold in the home exacerbates pre-existing chronic conditions.

“Some molds can cause severe infections and scarring in the lungs. For example, in some asthmatics, inhalation of Aspergillus spores leads to the development of allergic bronchopulmonary aspergillosis. This condition greatly affects the respiratory function,” writes the professor.

Individuals who suffer from diseases of the immune and respiratory systems are already weakened, so they are more susceptible to house mold. Professor Spiro warns that in patients with certain hematological diseases, inhaling mold can cause fatal complications.

While more scientific evidence is needed, the US CDC says some studies have already shown a link between exposure to house mold and the development of respiratory disease in people who were otherwise healthy.

As early as 2004, the Institute of Medicine (IOM) reported that there was sufficient evidence for a link between house mold and the development of respiratory diseases in healthy people, including children.

And recently, the US CDC stated that exposure to house mold in early years child's life is associated with the development of asthma in the future. However, this statement contradicts the theory of excessive hygiene and is still intensively debated by scientists.

Recall that the theory of excessive hygiene is that too clean environment in early childhood is a risk factor for allergic and autoimmune diseases in the future. Several studies have already supported this theory, but the debate continues.

WHO experts agree that there is a link between humidity in the home and an increased risk of a range of respiratory diseases, including respiratory infections, asthma, and others. WHO guidelines for residential air quality are based on these data.

Protection and prevention

Despite the conflicting and incomplete data of current research, the CDC and EPA are unanimous in saying that mold should not be in residential areas.

Both respected organizations believe that moisture control is a key way to prevent and control mold in the home. It is very important to act quickly when a water leak occurs. Wet area should be dried within 48 hours after troubleshooting.

The level of humidity in the room is the most important factor. Although this factor does not affect immediately, but through certain time mold begins to grow throughout the house. Condensation on windows can be an indicator of high humidity.

Frequent ventilation of rooms or special hoods can solve this problem. Humidity in a separate room can be reduced if certain tasks are abandoned. For example, from drying clothes or using certain types of heaters.

When removing mold from surfaces, you can use special commercial products, soap, or a highly diluted bleach solution. Always dry surfaces after cleaning or mold can return quickly.

Be careful with porous materials that are affected by house mold. It's wood and fabric. The fungus can penetrate deeply into such materials, sometimes making it impossible to complete removal. At favorable conditions the mold will come back again and again. If such materials have been affected by mold for a long time, it is better to get rid of them altogether.

American experts say that if the size of the mold strip exceeds 3 feet (about 1 meter), then it is better to entrust its removal to professionals. If you are concerned about your health, please consult your doctor.

Konstantin Mokanov

Is there mold in the bathroom? Find out from the article with what means you can get rid of it.

Mold and fungus on the walls and ceiling in the bathroom and the house is a common problem and far from being exclusively aesthetic. Microorganisms can harm the health of everyone who uses the bathroom or lives in the house. You need to get rid of fungus and mold immediately, as soon as they are noticed.

Why are mold and fungus dangerous?

A fungus in a bathroom or house is a colony of single-celled microorganisms. They reproduce by spores. These unicellular organisms were among the first living beings that appeared on planet Earth. They were able to adapt to numerous changes in climate and ecology. The waste products of fungi can be harmful to human health. It:

essential oils
minerals
toxins

IMPORTANT: The fungus has a black, brown, dirty green or dirty yellow appearance that appears on the walls and ceiling in the bathroom, water pipes, joints between furniture or plumbing and walls, the furniture itself. In the house, he "lives" in damp and dark places. A specific smell can also indicate the presence of pathogens.

Spores, toxins and other harmful substances produced by mold spread throughout the home. They settle on the skin, mucous membranes, in the lungs and stomach, enter the bloodstream. As a result, a person may experience various health problems:

intoxication
predisposition to allergies
predisposition to cancer
decreased immunity
allergic bronchitis, bronchial asthma, other irreversible diseases of the broncho-pulmonary system
liver and gastrointestinal diseases
headache

IMPORTANT: The fungus itself is also an allergen
In addition, mold and fungus eat deep into the surface and destroy it. This applies not only to wood and coatings but even concrete and masonry

VIDEO: Reasons for the formation of fungus in the apartment and house

What can I do to prevent mold from forming?

Favorable factors for mold formation and bending are:

high humidity
poor ventilation
lack of sunlight

Pathogens are more likely to inhabit a home or bathroom if:

The premises are not ventilated. The doors to the bathroom, bathroom, pantries, other rooms in which there are no windows, it is dark and damp, it is necessary to keep open from time to time
After water procedures there are splashes and drips of water in the bathroom. They must be thoroughly dried
Faulty plumbing. In the kitchen, in the bathroom, in the bathroom, leaky pipe joints, cracks and fistulas, moisture evaporating from them, settling on the surface, prepares fertile ground for the colonization of the fungus
Poor quality materials are used. During repairs in the kitchen, bathroom, toilet, balcony, it is necessary to use materials that are suitable for use in humid conditions, have an antifungal property or are treated with an antifungal compound
Unscrupulous neighbors live nearby. If it is damp in the adjacent room, moisture seeps through the risers, slab joints

Maintaining cleanliness and hygiene - prevention of mold in the bathroom and home.

IMPORTANT: Materials susceptible to mold and mildew attack are bare concrete, brick, raw wood, plastic and foam

How to deal with mold and fungus on the walls and ceiling in the bathroom and in the house? Remedy for fungus and mold

The scale of the fight against the fungus depends on how badly the surfaces in the bathroom or other room of the house are affected by it, on which it started.

If the fungus is found on the ceiling, it is likely to be present on other surfaces as well. The premises must be carefully inspected for its presence.
If mold has settled on a whitewashed or plastered surface, it will need to be cleaned to bare concrete and treated with an antifungal agent
Condition of painted surfaces, wallpaper, laminate, wood or plastic panels, etc. modern materials must be assessed for the extent of damage. If the fungus is not deeply ingrained, the surface can be saved using an antifungal agent.

The elimination of mold and fungus occurs in stages and includes:

determination of surface areas to be processed
make sure that children and pets are not in the housing where the fight against the fungus takes place
prepare work clothes, gloves, headgear, eye and respiratory protection
remove textiles and other unnecessary things from the room
prepare a remedy for eliminating fungus and mold
apply the product on the surface affected by the fungus, leave for the time indicated on the package
wash off the agent
dry the surface
leave the bathroom or other room open for 24 hours

This remedy can be industrial or homemade.
Suitable for fungus store funds in the form of creams, gels or powder that contain chlorine or alkali. For example:

plain white
Domestos
Antifungus
IZocide
Titan
others

IMPORTANT: Before using any purchased or folk remedy on certain type surface, you need to test it on a small invisible area to see how aggressive it is

How to remove mold and fungus with folk remedies?

Pronounced antifungal properties have:

boric acid
blue vitriol
ammonia
hydrogen peroxide
baking soda
vinegar

RECIPE #1: Hydrogen peroxide solution

How to remove mold and mildew folk remedies: hydrogen peroxide.

Perhydrol 35% is diluted in water in a ratio of 1:1. Using a sponge or spray gun, the solution is applied to the area to be treated. Wash off after 40 minutes. You may need to repeat the procedure.
RECIPE #2: ammonia solution

Like hydrogen peroxide, ammonia is diluted in half with water, after which I spray it onto the washed walls from a spray bottle. It is necessary to work with ammonia only in a respirator.
RECIPE #3: Vinegar

Ordinary table vinegar in undiluted form is applied to the surface affected by the fungus.
RECIPE #4: blue vitriol

100 g of copper sulfate powder is dissolved in 10 liters of water. The surface is thoroughly washed, treated with soda. After that, a solution of copper sulfate is applied. Let the walls dry naturally. This takes several days.