The plaster for the bathroom is suitable for both roughing and finishing of the room. It can simulate a coating of other materials and carry a decorative function, but it must protect the walls from moisture and take into account other specific operating conditions.
Can I use plaster in the bathroom?
In a room with a huge coefficient of humidity during the finish, you have to choose resistant to contact with liquids coating options for walls and ceiling. Plaster for bathroom is recommended for use, because it has a number of advantages:
- excellent vapor permeability of surfaces;
- The absence of fogging mirrors and the absorption of excess moisture due to hygroscopic properties of the finish;
- ability to cope with temperature changes;
- positive microclimate and lack of conditions for fungus development.
Which plaster is better for the bathroom?
The material used must have good sanitizing characteristics. Without going into the recipe and composition of this type of plaster for the bathroom, it must be said that it has greater strength compared to the universal mixtures suitable for finishing any room. The dry sanitizing base has several advantages, eclipsing the advantages of cement-sand compositions:
- Plaster for the bathroom prevents the appearance of highs on the walls - spots caused by a large concentration of salts in the concrete. It takes out excess water, which ensures the durability of the presentable kind of room.
- This material rarely crack, even if applied with a thick layer.
- It is environmentally safe and does not release toxic substances during operation.
Finishing the walls in the bathroom with plaster
The technology of using the mixture consists of several stages, varying depending on the desired effect. The first of them remains unchanged - preparation of the surface - cleaning from the contamination and the remnants of old finishing materials. In the future, the plastering of walls in the bathroom is carried out according to one of the following methods:
- Finishing under the tile. A mixture of cement and plasticizer is applied in layers so that each of them can dry out before facing the ceramic tiles.
- Finishing for painting. If you abandon it, the paint will detect all the deviations and defects of the walls.
- Decorative plaster for the bathroom. This is the finish coat, which is used for design purposes.
Plaster under the tile in the bathroom
After removal of the old finish, the cleaned surface is primed to create on their surface a unique film, improving the adhesion of substances and filling the pores of the walls in order to enhance moisture protection. The composition of the primer has antiseptic agents that prevent the appearance of mold. The solution is applied to the walls in three layers:
- Starting spray. The surface is wetted with water using a spray or brush. Masterkom liquid solution is thrown on the walls by a layer of 5 mm and thicker. It does not need to be leveled.
- Rough grout. A thick mixture is applied to the starting layer and leveled. Gypsum plaster in the bathroom under the tile is not used, because it crumbles and absorbs too much moisture - instead of it all the same cement-sanitizing compounds are applied.
- Finishing. At this stage, the coating is leveled to a thin layer of 2 mm. When it dries, you can start facing.
Bathroom plaster for painting
After sealing of small cracks and a primer, a putty on acrylic or latex base with moisture-resistant properties is applied. The plaster of the walls in the bathroom is used only after the excess irregularities are removed by the sanding machine or by using sandpaper. It is applied in 2-3 layers with a break for drying. Each layer is primed - even the last, which is applied before applying the paint.
Waterproofing plasters in the bathroom
If the gypsum or other mixture of poor quality was used, the water repellent mixture will help to protect against mold and fungi. It is called waterproofing and is laid between plaster layers or under a tile. The primer should have a minimum level of moisture absorption and a high breathing capacity. Therefore, waterproof plaster for the bathroom is applied to one of the following mixtures:
- latex or epoxy grout;
- bituminous mixture;
- silicone base.
Plastered ceilings in the bathroom
Putty - the cheapest way to finish not only vertical, but also horizontal surfaces. It is not easy to care for the ceiling, therefore the plaster for the bathroom is ideal, if only because it does not need to be wiped with dust from a cloth or subjected to total repair after flooding neighbors from above, as it would be with a suspended ceiling. It is applied according to this algorithm:
- First remove a layer of old paint or whitewash.
- The ceiling is checked for integrity. The best plaster for the bathroom is one that does not emphasize the differences in the slabs, so it is better to wipe them beforehand with the starting putty.
- Apply a finishing layer of plaster, on top of which, if desired, you can use the paint.
Finishing the bath with plaster
The process of treating the walls with putty is not much different from working with similar mixtures in other rooms. The existing differences are manifested at the last stage, at the moment when the finishing mixture is applied to the rough layer. To implement a plan, it is recommended to use one of the three finishing techniques:
- Homogeneous-rough. The method involves applying a mixture of a special sponge or crumpled in a paper placed in a cellophane bag. After drying, decorative plaster for a bath with a relief reminiscent of "goosebumps" is obtained.
- Borozdchatato-rough. This finish bark beetle - the use of a mixture for the finish layer with coarse-grained elements and furrows, obtained after vertical smoothing by a grater.
- Borozdchataya plaster for the bathroom. The method of imitating brick or masonry is carried out using a special template or special spatula to force the relief on the surface of the raw layer.
Decorative plaster in the bathroom
Gone are the days when ceramic tiles were the only design of the room, in which a high level of humidity is constantly maintained. Decorative plaster for the bathroom is a non-uniform mixture, which when dried gives an interesting relief of the finished surface. When it is manufactured, synthetic substances are used, and therefore it is able to withstand even a prolonged exposure to moisture. Three main types of decorative putty are divided:
- Textured plaster - granular mass with the addition of pebbles, flax or cotton fiber, inert gypsum or fine-grained sand.
- Marble plaster - mineral composition with inclusions of large crumbs.
- Venetian coating - plaster for the bathroom, which is applied layer by layer with a multiple trowel.
Marble stucco in the bathroom interior
Durability, a wide range of colors and environmental friendliness are considered the main advantages of using mineral crumb as a coating for walls. Decorating the bathroom with decorative plaster will be exclusive because after drying the crushed marble creates a unique pattern, which is impossible to repeat. Putty of this type is perfectly cleaned and serves 2-3 times longer than any other mixture. Choose it is worth it, if you took into account some of the nuances:
- It is sold ready-made, packed in buckets of 30-35 kg: it is important to immediately calculate the exact amount of necessary material, since it will not be possible to buy it in a small format.
- Before plastering it is necessary to apply a primer with quartz sand.
- The mixture with marble chips freezes for two hours, so it is quickly distributed with a wide spatula or stainless steel ironing.
Venetian plaster in the bathroom
Decorative multilayer coating contains stone crumb and slaked lime, but it has a more homogeneous texture. The surface of the finished wall resembles a marble or onyx pattern for another reason: the mixture is carefully rubbed and dried until the desired pattern appears on it. Venetian plaster for the bathroom requires special skill for proper application:
- It is distributed by a flexible rubber spatula, thin dabs in 5-6 layers, each of which is thoroughly dried.
- The mixture before the work is tinted or gets matte finish by mixing with suitable additives.
- It can be mixed with dyes simulating precious metals to refract color and visual expansion of the room space.
Textured plaster in the bathroom
So called filler, which has a coarse-dispersed and highly viscous structure with a natural filler. When answering the question about what plaster to choose for a bathroom, it is recommended as the most universal kind of coating used for decorating stone, concrete, brick and gypsum walls. Textured putty has three essential advantages:
- it hides large defects and irregularities;
- for the application, surface preparation is not required;
- the applied layer has a high hardness.