Warm plaster is a kind of plaster in which special natural or artificially produced substances with high thermal insulation properties are added. Thus, a coating of warm plaster performs two functions at once: aligns the surface, preparing it for finishing finish, and produces an insulating effect, making the room warmer.
Types of warm plaster
The composition of warm plaster along with the traditional cement mortar can include the following substances: perlite sand, polystyrene granules, sawdust, paper, pumice powder, expanded clay. That is, in the composition of this finishing material, ordinary sand is replaced with other fillers that have a high ability to store heat. There are three most common types of warm plaster:
- Plaster with a filler of expanded vermiculite - a special mineral, obtained after heat treatment of raw materials - vermiculite rock. This plaster can be used both for work outside the house, and for interior finishing and thermal insulation. A great advantage of this type of warm plaster is that vermiculite has an antiseptic effect, that is, molds or fungi do not appear on the walls treated with this composition.
- Plaster with natural fillers . Usually, as a natural insulation in the composition of such plaster used sawdust, as well as parts of clay and paper. Such warm plaster is also often called "sawdust". Because of the low stability of such material to the vagaries of the weather, such warm plaster is not suitable for outdoor work, although many people prefer it for indoor use because it is environmentally friendly and safe. It is also worth noting that when working with such plaster it is necessary to ensure good ventilation of the room during its application and for the entire period of drying of the coating, as otherwise the fungus may appear on the walls.
- Plaster with polystyrene foam . The composition of this finishing mixture includes expanded polystyrene pellets that perfectly hold heat inside the room. A similar kind of plaster can be used for both exterior and interior works.
Using a warm plaster
At first glance, the use of warm plaster is a very profitable solution. You get at once two positive effects: thermal insulation and even walls. However, if you study the issue more closely, you can identify the positive and negative aspects of such a solution when repairing .
External warm plaster, as stated by the manufacturers can be used for finishing the facades of houses, warming the external walls of the room, warming slopes and window and door openings. However, a layer of such plaster, which is required to provide the necessary thermal insulation properties, will be much more than that which can be used with other materials (for example, mineral wool or foam plates). And the weight of such treatment of the walls will be much greater, and hence the load on the foundation will increase. But due to its plasticity in the liquid state, such plaster can easily be used for sealing small cracks in the coating, joints in the ceilings, insulating windows and doorways, as well as the base of the house.
Internal works with warm plaster have more advantages, as this material is almost completely natural, and some of its types can have antiseptic effect. But there are drawbacks here too. Firstly, the warm plaster does not have sufficient sound insulation effect, and this can be important if, for example, it is necessary to finish the apartment in a multi-apartment building. In addition, this composition can not replace the finish of the walls of the premises.
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