How to insulate the end wall of a bathroom
It is necessary to insulate the outer wall of the bathroom in order to ensure its high-quality thermal insulation. The bathroom is a room with high humidity, which requires the right choice of insulation, finishing materials and high-quality conduct all thermal insulation work with your own hands.
Insulation of the bathroom, as well as other walls in a private house, it is advisable to carry out the outside. How to do this correctly is discussed in the article.
The content of the article
Features of warming the bathroom
Comfort and warmth in the bathroom is ensured by warming the room.
In this case, the following rules should be observed:
- Insulating the bathroom from the inside, it is necessary to create conditions for the high-quality operation of exhaust ventilation.
- The installation of the insulation is carried out in such a way as to avoid a loose fit of the insulating material and the formation of voids. Otherwise, during operation, the coating may sag and get wet, which will adversely affect the quality of the insulation device.
- The whole process of wall insulation should be carried out after their treatment with special antifungal agents. It is necessary that the surface is absolutely dry.
- The thermal insulation layer must be protected from direct exposure to water, which requires a hydro-barrier.
- In addition, “cold bridges” should be insulated using mastic or waterproof putty.
Tip: When installing thermal insulation, it is necessary to properly process the seams that have formed after decorative lining with a special water-repellent sealant.
- When choosing a heater, an important criterion is the stability of its shape and durability, for the entire period of operation, which provides high-quality material.
What types of thermal insulators are used when warming a bathroom
Insulation of the walls of the bathroom can be performed with such heaters as:
- Mineral wool thermal plates. They should be used only in combination with high-quality hydro and wind insulation. These materials absorb moisture from the atmosphere and the structure itself, after wetting the material will begin to deform and lose all its properties.
Tip: For external insulation, thermal insulation should be used, which is impregnated with compounds that reduce the absorption of moisture by the material.
- Styrofoam (cm. How is warming the walls with foam yourself) It has a small mass, it is easily mounted on an adhesive solution, without requiring the installation of an additional frame for its installation. The insulation is closed with facade plaster, which reduces the cost of the material, which means that the price of insulation is reduced.
- Heater is pith. For its manufacture, bark of cork oak wood is used, without the use of synthetic compounds, which makes the material natural. Warming the walls of the bathroom with a cork coating increases the thermal insulation characteristics of the room.
- Polyurethane foam. This is the best heat insulator used to warm various walls in the bathroom. The material creates a one-piece monolithic coating, which provides reliable adhesion to any surfaces.The insulation is not afraid of small insects, moisture, but when applied it requires special equipment that significantly increases the cost of wall insulation.
- Application of “warm” plasters. With their help, heating costs are significantly reduced. Regardless of the weather, a comfortable microclimate is provided in the room.
Features of wall insulation bath mineral wool
The basis of mineral wool are mineral fibers. This composition makes the insulation layer “breathable”, which prevents the formation of condensation on the surfaces of the walls and ceiling of the bathroom.
Tip: When conducting thermal insulation work, you should pay attention to the integrity of the vapor and waterproofing layers. In case of violation of their tightness, the insulation will begin to absorb moisture, this will lead to a deterioration in the thermal insulation properties of the material.
The instruction on warming the bathroom with mineral wool advises:
- Use the composition to warm the ceiling and walls of the room.
- To choose a heater not in rolls, but mineral wool mats, which will provide better thermal insulation. The latter have a higher rigidity, and the technology of their fixation, between the elements of the frame, does not allow the insulation to slide from vertical surfaces.
- The supporting frame is best constructed from a galvanized metal profile with high anti-corrosion properties and resistance to deformation. When using wooden battens, due to the low resistance of wood to moisture, the heat-insulating layer may be broken, the efficiency of the insulation and its service life may decrease.
- If there is heating equipment in the bathroom where the mineral wool and these devices are in contact, it is additionally necessary to shield with aluminum foil.
Features of warming the bathroom with foam
Quite often, foam is used to warm the bathroom.
Such material:
- It has high heat-insulating and moisture-repellent properties.
- Has a very low vapor permeability, which does not allow the surfaces to “breathe”, and as a result - the accumulation of condensate under a layer of thermal insulation, which leads to the destruction of walls, the formation of mold and fungus.
- To prevent the accumulation of fluid under the insulating layer, it is necessary to monitor its integritycarefully close all butt joints of the material.
The photo shows the laying of foam boards on the bathroom wall.
The installation technology of such material is quite simple.
To do this, you will need:
- Styrofoam sheets.
- Tile glue.
- Putty.
- Several spatulas, including an adhesive tool.
- The knife is construction.
- Rubber roller.
Styrofoam sheets are easily processed and cut with a construction knife to the desired size.
Installation procedure:
- Surfaces are thoroughly cleaned, leveled and primed.
Tip: If there are irregularities on the ceiling and walls of the bathroom, they should be removed by applying rough plaster. The primer of the surface for laying the foam must be done twice with antiseptic soil.
- The adhesive composition is being prepared.
- With a notched trowel, glue is applied to the entire surface of the heat-insulating sheet, which will ensure good adhesion of the insulation to the surface.
- Foam carefully, so as not to damage the sheet due to its high fragility, is pressed against the surface of the wall and rolled with a rubber roller.
- The contact points of the material with the heating equipment are shielded by aluminum foil.
- Joints between adjacent sheets of insulation are sealed.
- Exterior finish finishing putty.
- To obtain a smooth and uniform putty surface, the finish coating is applied in two layers. The second is covered after drying and thoroughly grouting the first.
- The second layer is rubbed with a special trowel.
- Putty surfaces are painted or finished with moisture-resistant finishing materials.
Features of cork insulation for the bathroom
To warm the bathroom, cork insulation must first be treated with special wax impregnation to increase its water-repellent properties. When installing the material, the sheets are simply glued to the walls and ceiling in the same way as simple wallpapers using special glue for cork.
Features of polyurethane foam insulation
Optimum energy efficiency of the bathroom can be achieved by using a liquid polyurethane foam thermal insulation for its insulation.
The main advantages of the material:
- High strength.
- Good vapor permeability.
- Heat and sound insulation.
- High fire resistance.
- Moisture resistance.
- Light weight, which does not increase the load on the ceiling and walls of the room.
- The insulation is sprayed directly on the surface to be insulated.
- Polyurethane foam adheres perfectly to any material.
- The structure of the insulation provides free circulation of air masses in the insulation layer, which allows not to carry out the laying of hydro- and vapor barrier films.
- Polyurethane foam can be applied in a thin layer, which allows you to make a low coefficient of thermal conductivity of the material.
- After installation, a uniform monolithic coating is obtained, completely eliminating the formation of cold bridges, condensate under a layer of thermal insulation.
Spraying polyurethane foam on insulated surfaces is done with special equipment (see Liquid thermal insulation for walls: features of use), and the technology of applying the material allows you to insulate the bathroom, with a complex configuration of the walls.
During the work it is necessary:
- Arrange the frame.
- Apply a heat insulating layer.
- Finish insulated surfaces.
- Under the influence of high temperature, the polyurethane layer does not change its characteristics, therefore there is no need for additional shielding of the contact points of the insulation with heating equipment.
Features of wall insulation with a "warm" plaster composition
The main advantage of “warm” stucco mixtures is to obtain a uniform coating without cold bridges.
“Warm” plasters have:
- High vapor permeability due to the presence of a cement base.
- Low thermal conductivity, which provides an additional introduction to their composition of various additives.
“Warm” plasters are distinguished by the type of filler.
The compositions may be:
- Vermiculite.
- Sawdust.
- Polystyrene foam.
Material Advantages:
- Before applying the mixture there is no need to pre-align the walls.
- Plaster can be applied on any surface, which allows its high adhesion to be made.
Lack of thermal insulation materials:
- Too thick plaster coat, significantly reducing the useful area of the bathroom.
- The need to perform additional decoration.
Before applying such compositions, the insulated surface must be well primed. What other methods exist, how to insulate the walls in the bathroom from the inside of the room or outside the house, in detail all the stages of the work can be seen in the video in this article. A warm and comfortable bathroom is comfort for any owner.
