Selecting the appropriate materials for insulation is essential for both comfort and energy efficiency in your home. Warm plaster, sometimes referred to as heat-insulating plaster, is one option that sticks out. This kind of plaster gives your walls a smooth, ornamental finish in addition to an additional layer of insulation.
There are various varieties of warm plaster, and each has unique qualities. Knowing these kinds will assist you in choosing the ideal solution for your particular requirements. Warm plaster is a flexible solution that can be used to increase thermal efficiency, lower energy expenses, or improve the visual appeal of your walls.
Warm plaster application calls for meticulous attention to detail because it’s a multi-step process that guarantees good insulation and a high-quality finish. Every step is essential to getting the desired outcome, from surface preparation to proper plaster mixing. In order to maximize your investment, we will examine the different kinds of warm plaster that are available and walk you through the necessary work technology in this article.
Purpose
While this material has better thermal insulation qualities than regular plaster, it is not a complete substitute for expanded polystyrene or mineral wool for full-fledged house insulation, but it is a useful addition.
The following are the manufacturers’ suggestions for using heated plaster. It serves as:
- facade insulation;
- heat and sound insulation material for finishing internal and external walls;
- insulation of balconies, verandas, door and window slopes, stairwells, etc.;
- sealing of joints of ceilings, cracks and crevices;
- heat insulator for well masonry;
- material for finishing works in premises;
- insulation of water supply pipes;
- thermal insulation of floors and ceilings.
How much better at retaining heat does such a coating work? Let’s compare the thermal conductivity coefficients, which are the primary indicators: The value for basic cement-sand plaster is 0.93 W / m °C. Furthermore, it is already 0.35 W / m ° C for cement-polystyrene foam (Knauf Grunband), which is nearly three times lower! The thermal conductivity of gypsum plaster with filler will be even lower, at roughly 0.25 W / m ° C.
Types of thermal insulation solutions
The primary distinction between warm plaster and regular plaster is the addition of more substantial thermal insulation materials to the mixture in place of sand. These mixes can vary not only in composition but also in terms of technical and operational properties, application techniques, and composition. Let’s enumerate the primary varieties of these fillers:
Perlite is a volcanic-derived material. Granule sizes range from 1 to 10 mm. Plasters with perlite require a top coat because of their many pores, which effectively absorb water. The filler’s chemical inertness and fire resistance are two benefits. One drawback is that the material is delicate in its unadulterated state.
Plaster mixtures containing expanded vermiculite, a layered mineral, can be used for both indoor and outdoor applications. It is completely resistant to deterioration, has no harmful ingredients, is non-flammable, and works wonders as an antiseptic. Because of its high hygroscopicity, extra finishing is needed.
The combination of sawdust, clay, and paper is intended only for interior wall insulation. It is preferable to use moisture-resistant plaster for finishing bathrooms, showers, swimming pools, and saunas because, despite its great thermal insulation qualities, this type of plaster is prone to deterioration.
Derived from quartz sand and based on foam glass. Its cellular structure effectively retains heat, and plaster, with its addition, is resistant to fire and moisture.
With expanded polystyrene granules, which are the most widely utilized substance. You can also add fillers and lime as additives. This light-weight, relatively inexpensive mixture is used for both indoor work and facade finishing because it does not rot and retains heat well.
Low strength is one of this warm plaster’s drawbacks. The surface that has been treated with it needs to be finished.
Warm plaster, also known as heat-insulating plaster, is a practical and economical way to insulate your house. This kind of plaster creates a layer that lowers heat loss and helps maintain indoor temperature by combining traditional plastering with insulating materials. There are numerous varieties that are appropriate for diverse settings and requirements. A precise method must be followed when applying warm plaster to guarantee good adhesion and insulation. Understanding the various kinds and using the appropriate application techniques can significantly improve the energy efficiency of your house.
What mixtures are available for sale
Although this material has only recently been used in construction, its popularity is growing yearly because of its unique qualities. The most well-known brands are:
- Unis Teplon white and gray – gypsum heat-saving plaster with perlite filler. Intended for interior decoration of walls and ceilings in rooms with normal humidity. It has good vapor permeability, therefore it maintains a comfortable microclimate in the house. Unis Teplon can serve as a base for wallpaper, tiles or paint. Instructions and characteristics.
- Knauf Grunband — is an insulating cement plaster with polystyrene foam and hydrophobic additives. Suitable for aerated concrete, concrete, brick and ready for any subsequent finishing. It is used for plastering walls outside and inside the house. The finely dispersed structure of the mixture allows you to form dense solutions from it, which are easy to apply both manually and by machine.
- Ivsil: high-quality and relatively inexpensive plaster Ivsil Termosil with foam glass penostek is used for thermal and sound insulation. Binder — cement with polymer additives. Suitable for covering external walls, windows and communications.
- Ecotermgroup: thermal insulation mixtures "Umka" have good thermal and sound insulation properties. The composition includes: binders (cement, lime), silica filler and polymer modifying additives. Umka has a small weight and sufficient strength.
- Teplover: produces a cement-lime mixture with the addition of expanded vermiculite and perlite. Like other cement-containing plasters, it is suitable for outdoor work and damp rooms.
- Hauncliffe — a heat-saving composition made of cement, lime, composite filler of our own production and polymer binders.
- Mishka is now produced under the brand WarmMix (WarmMix). Foam glass is used as a filler. It has low thermal conductivity (0.065 W / m * K)
- Ceresit CT 24 Light although it contains perlite, it serves more to lighten the cement mortar. This is primarily a leveling plaster.
Preparation by yourself with hands
Warm plaster preparation is an easy process. The most crucial thing is to pay attention to the proportions. Only a handful of the most popular compositions will be provided:
- based on clay and sawdust: for 1 part of clay we need 0.2 parts of cement, 2 parts of paper pulp (it can be made from finely crushed old cardboard or books and newspapers) and 0.3 parts of sawdust; in a thoroughly mixed mixture of water it is necessary to add so much that the solution has a paste-like consistency, convenient for application; it should not slide off too easily even from an inverted spatula;
- the recipe is more suitable for making facade plaster, for 1 part of cement you need to take 3 parts of perlite, 1 part of expanded polystyrene with granules of 1-3 mm, you can add a little polypropylene fiber (50 g is enough);
- another recipe similar to the previous one: for 1 part of cement take 4 parts of vermiculite or perlite; detergents can be used as a plasticizer, they are added very little – no more than 1% of the resulting mass.
The thickness of the upcoming layer determines how much solution will be needed. The amount of plaster needed per square meter at a thickness of 25 mm is 10–14 kg.
Mix the plasticizer well after diluting it with water. Filler is combined with dry cement; this can be done by hand or with a drill equipped with a mixer attachment. After that, liquid is added to the dry mixture little by little until the mixture thickens into a plastic mass.
Crucial! Since a cement-based solution sets quickly, it needs to be made in small amounts, enough for one to two hours of work.
| Type of Warm Plaster | Work Technology |
| Perlite Plaster | Apply in layers with a trowel, ensuring each layer is dry before the next. Finish with a smoothing trowel. |
| Vermiculite Plaster | Mix with water, apply with a trowel, and smooth out. Suitable for exterior walls. |
| Foam Glass Plaster | Apply directly to the surface with a trowel, pressing firmly. Finish with a smoothing tool. |
| Polystyrene Plaster | Mix with water, apply with a trowel, and smooth. Often used for insulating facades. |
Selecting the appropriate warm plaster type is crucial to maintaining the comfort and energy efficiency of your house. There are plasters that are based on mineral, acrylic, or silicone, each with unique advantages, so you can find one that works for your needs and climate.
Heat-insulating plaster application demands meticulous attention to detail from initial surface preparation to finished product. Adhering to the appropriate work technology guarantees a long-lasting and robust application while also improving the plaster’s thermal performance.
Wall insulation can be effectively improved by learning about the various types of warm plaster and perfecting application techniques. This not only makes the living area warmer over time, but it also lowers energy expenses.
