Waterproofing bathroom under tiles

The bathroom is characterized by high humidity: moisture particles accumulate in the air, and condensation accumulates on the walls and ceiling. Over time, under the wallpaper, tiles can form a fungus, but worst of all - leakage, when the water through the microcracks and floors will cause stains on the neighboring ceiling, and even worse - the flow of water. Neighbors are unlikely to enjoy such a “shower”, and even you face serious troubles and additional costs - not only for your own, but also for your neighbor's repair.

Waterproofing protects the concrete base of the bathroom from moisture

Why do you need waterproofing in the bathroom

In conditions of constant humidity, especially in a small room where natural ventilation does not cope with the ventilation of the room, with time any, even the most moisture-resistant materials will begin to deteriorate. If the repair in the bathroom is not done very well, between the tiles, the joints of the panels, the rolls of wallpaper, small drops of water penetrate inside, over time accumulate there, causing the formation of mold fungi.

Consequences of improper waterproofing in the bathroom

The fungus is not just ugly black spots, a terrible smell. It can cause allergic reactions, and then serious diseases, but it is not easy to get rid of it. Therefore, high-quality waterproofing is necessary in the bathroom, it will not allow the parasitic fungus to settle in your bathroom, it will eliminate the need to make repeated repairs.

It looks like a fungus that grew in the bathroom without waterproofing

What you need to isolate

Ideally, all surfaces in the bathroom. You can leave the ceiling and the upper part of the walls alone, but the floor, the bottom of the walls in the "wet" areas - at the sink, bathtub or shower - is necessary. No matter how carefully you and your households use water - splashes fall on the floor and walls. If you have problems with plumbing, burst pipes, sewer blockage leaks are inevitable.

Wall protection

The waterproofing of the wall in close proximity to the shower stall, near the bathtub, under the washbasin sink, near the toilet bowl is considered mandatory. Obligatory is waterproofing the area of ​​not less than half a meter from the source, creating a high humidity. At the same height you need to protect the walls of the bathroom. This will avoid the penetration of moisture under the tile: it can eventually cause the destruction of the cement composition, which keeps the tile.

Application of cement-polymer waterproofing on the bathroom walls

In addition, water can cause the tiles or other materials used to decorate the walls to be unusable or not an aesthetic look. Given the cost of purchasing materials, the work of specialists in laying tiles, the additional costs are unlikely to appeal to someone.

Most often, the fungus appears at the junction of the wall and shower or bath

Floor waterproofing

The bathroom floor must be protected from leakage all over: not only in the “wet” zones, but also in the “dry” ones. So you can protect yourself and your neighbors in the event that water floods the room. To this end, in the case of obmazochnoy waterproofing make protective sides, calling on the wall to a height of not less than 10-15 centimeters.

Treatment with waterproof sealant for floor and wall joints

Special attention should be paid to places in the immediate vicinity of water and sewer pipes - they suffer from leaks more and more often.

The process of installing waterproofing under the shower

Types of waterproofing

There are three main types of waterproofing: coating, pasting and impregnating. They differ in their protective composition, appearance and application method.

Pasty

This type of bathroom floor protection is a coating of surfaces with a special film coated with a bituminous, rubber or polymer composition. This type of waterproofing includes the usual and modern coatings:

• Ruberoid;
• Ecoflex;
• Isoplast;
• Isoelast.

Laying the roofing material under the tile in the bathroom

In fact, all of them are based on a bitumen coating with a filler applied on a glass cloth or polyester base.

Isoplast laying on the bathroom floor

Advantages and disadvantages

The advantages of such a waterproofing coating are:

• No need to wait until the material is completely dry - you can walk on it immediately;
• Durability;
• Good waterproofing properties.

Roll waterproofing fits snugly to the surface, does not require drying and allows you to immediately continue repair work

However, such a coating requires special care when laying, in addition, the process is quite time-consuming, so it is better to invite experts to properly perform waterproofing works in the bathroom.

Applying waterproofing coating requires special knowledge and experience.

In addition, before laying the protective film, careful surface preparation is necessary, leveling - only drops of no more than 2 mm are allowed.

Coating

This is a solution based on bitumen, rubber or synthetic ingredients, which is applied directly to the floor, bathroom walls before laying tiles. It is used more often than other methods of waterproofing.

Waterproof waterproofing is applied to the surface from one millimeter to several centimeters.

Advantages of coating

Unlike waterproofing waterproofing, coating composition can be applied to any surface, without aligning it. In addition, its preliminary drying is not required - and the waterproofing mortar is applied easily to the damp surface after plaster without losing its properties.

Due to the liquid consistency, the composition is applied evenly, has no joints and fills all cracks and irregularities. Due to this, it gives the surface of the walls, the floor in the bathroom increased moisture resistance.

Applying a waterproofing layer in the bathroom

Among the advantages it should be noted that such a composition is inexpensive, and it is easy to apply it yourself, without having experience and special skills. In addition, it does not have an unpleasant smell, in contrast to the roll coating.

Bathroom treatment with liquid coating solution

Types of waterproofing waterproofing

The main types of coating waterproofing compositions are bituminous and cement mastic. The structure of the first includes:

• Bitumen;
• Crumb rubber, latex fillers, plasticizers;
• Solvent.

Polymer coating waterproofing

The result of the combination of such components is a durable elastic composition that reliably retains moisture, preventing it from penetrating inside. In addition, this waterproofing is able to withstand both cold and hot temperatures.

Important! Reinforcing the surface requiring waterproofing, avoids cracking, which leads to a decrease in the protective properties of the coating.

Conducting reinforcement before applying a waterproofing coating

Cement waterproofing compounds are a mixture of cement, water, mineral filler. Mastic is easily applied to the surface, has high adhesive properties. It is more resistant to temperature changes than bitumen.

For the application of cement coating waterproofing paint roller is used.

Surface preparation

Waterproofing of the bathroom is carried out during the overhaul. The preparation of a bathroom for waterproofing begins with the cleaning of surfaces - old paint, tile, and plaster are removed from the walls. Cleaning the floor and walls produced to the concrete base. The walls and the floor line as much as possible, remove debris and dust.

Before applying the waterproofing layer, level the surface of the walls and floor

Before starting work in the bathroom, you need to tap all the walls - if there are voids, cracks - to embroider them, remove the screed, plaster, seal all seams.

Primer

Priming is the first stage of work after cleaning. Primer is applied if there is no need to carry out a leveling screed. Apply it with a roller in several layers, applying each layer perpendicular to the previous one. So there will be no gaps. In this case, the primer itself will become an additional waterproofing impregnation.

The primer can be applied with a brush.

Pay attention to the appearance of the primer: it must be compatible with the selected type of waterproofing.

Important! The bathroom floor must be lower than the floor in the rest of the apartment, otherwise you will have to set a high threshold.

Waterproof primer protects against excess moisture in the bathroom

Preparation of problem areas

These include joints of the walls and the floor, corners, pipe joints. They need additional treatment: they are usually taped with a sealed tape, thick rubber plugs are put on the pipes.

Laying waterproofing

Laying or pouring waterproofing materials in the bathroom is possible only after the primer dries well. Each layer of waterproofing waterproofing in the bathroom should be at least two millimeters, at the exit of pipes - at least four.

Putting mastic on the floor

In construction markets, waterproofing mastic can be sold in finished form or in the form of a dry semi-finished product. Dry mix should be diluted before use according to the manufacturer's recommendation. Sometimes for the preparation of a solution is not used water, and a special emulsion.

As a result, the finished composition should be similar in consistency to molten clay - viscous and elastic - in this form it is convenient to impose on the surface, and it freezes faster. Apply mastic near the holes of the sewer and water supply - the outlet of water pipes. In hard-to-reach places it is more convenient to work with a brush.

To make the bathroom waterproofing properly, you should follow the technology:

• Begin processing from the corners, which are greased especially carefully.
• Then the joints of the walls and the floor are processed, after which a waterproof rubber tape is applied to them.
• Mastic is applied to the floor in several layers. Each layer is applied after complete drying of the previous one. Thus, it will take you 2-3 days to clean the bathroom.

Important! Apply the mastic should be in several layers, carefully coating the entire surface so that there are no untreated areas.

Waterproofing walls

When treating the bathroom floor, it is necessary to lubricate the walls - at least 15-20 cm from the floor, and preferably even higher. Here the disadvantages of bitumen mastic appear - it flows, therefore, when choosing such a waterproofing for the floor of a wall, it is better to treat it with a cement moisture protective compound.

After the floor and walls dry out, they are again primed. If you used bitumen mastic, you need to make a tie for laying tiles. When using acrylic or cement mixtures, the screed can be omitted.

Laying roll waterproofing

This method will cost more - and the hydrostable material itself, and work on its installation. All rolled protective materials for the bathroom are divided into self-adhesive and fused. As the name implies, the first ones have a glue layer; a gas burner is required for the second one.

Waterproofing based on glue

Laying such a film is simple:

• The protective coating is removed from the adhesive side;
• The roll unfolds, grabbing a portion of the wall;
• The next layer is applied side by side, slightly overlapping.

The peculiarity of this method of waterproofing a bathroom is that it is necessary to lay it layer by layer very carefully - it will be impossible to correct the error. For the film to lie flat on the floor, you need to roll it with a wide roller for better adhesion to the surface.

Weldable waterproofing film

Such a waterproof material for the bathroom consists of shale dressing, bitumen polymer, applied on fiberglass (elastic polyester). Completes the waterproofing "cake" film, which burns when heated.

For laying waterproofing will require a gas burner. It is undesirable to use it in an apartment, especially in a limited, poorly ventilated room. Therefore, it is advisable to invite experienced professionals to carry out the work.

The moisture-proof “sandwich” is laid in this way: the roll is rolled out, the bitumen layer is heated with the help of a gas burner, which ensures its adhesion to the concrete floor surface. Here, too, mistakes are not allowed - it is impossible to tear off the cover.

The subtleties of laying waterproofing roll

Before laying the roll waterproofing, it is necessary to treat with mastic on the basis of bitumen all the joints, corners, pipe exit points. Where it is necessary to bypass engineering communications, it is necessary to make holes with a smaller diameter in the film than a pipe - then you can arrange small sides.

In addition, it is advisable to use rubber seals and all joints, first smear with mastic, and then strengthen the waterproof tape. Having finished laying the waterproofing layer, you can make a tie for laying tiles.

Important! Having laid a tile, process seams with sealant, and only then do their grout. The more waterproofing layers will be done in the bathroom, the calmer you can live without fear of leaks.

Features waterproofing wooden floor

Such a floor, and sometimes the walls of the bathroom require some preparation. The bituminous composition is unsuitable here - it is fluid and will penetrate the wooden floor. You will need to apply many layers of mastic before it stops being absorbed. It is very expensive.

Training

Waterproofing technology in the bathroom, where the wooden floor consists of several stages:

1. Cleaning the floor from dirt;
2. Laying lags, then vapor barrier film;
3. Next, heat insulation plates are laid - for example, polystyrene foam;
4. Joints are treated with sealant.

When using mineral wool instead of expanded polystyrene, the “pie” will become even thicker — waterproof plywood is placed on top of the mats.

Waterproofing

To protect the wooden floor for laying tiles from moisture penetration, they take liquid rubber, which is mixed with an activating compound and quickly applied, rolling it with a roller. Particular attention should be paid to the joints of the floor and walls, slots that need to be filled as much as possible with a hermetic, hydro-resistant composition.

Having waited for full drying, it is necessary to examine a surface carefully - that there were no not smeared sites. The floor must be even, homogeneous. For confidence, it is better to apply the second layer. Then the tie is made - the reinforcing mesh is laid. When using rubber compounds as a waterproofing compound, it is imperative to make a coupler - tiled glue does not hold up well on the rubber-impregnated surface.

If you plan to leave the floor wood, choose the so-called thermotree, steamed in special vacuum boxes. Instead of the usual waterproofing using parquet varnishes, stain, primer varnishes. In this case, all the gaps, joints should be carefully missed. This method can be applied in particularly wet areas, such as a bath.

How long does waterproofing dry

If you chose a roll waterproofing for a bathroom under a tile, you will not need to wait for drying. She dries instantly - after laying rolls on the floor, you can walk.

Mastic dries longer - about a day. Given the need to install two, three layers of waterproofing for better protection of the bathroom, before continuing to repair, it will take several days. It is undesirable to walk on the bathroom floor until it dries out completely. Do not put anything on it, do not spill water. After complete drying, you can install plumbing in the bathroom, bring water to it, lay tiles on the walls and the floor.

Waterproofing in the bathroom - an important stage of repair, which can not be ignored. Leaks are not insured against leaks. Even daily water procedures can, over time, not only spoil a carefully made repair, but also create a favorable atmosphere for the development of a pathogenic fungus.

Protect tile from the negative effects of moisture and steam, and neighbors - from unpleasant streams from the ceiling will help properly made waterproofing. Having executed it once with observance of all rules, you will be able to forget about possible “wet” problems for a long time.

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