Plastering stoves and fireplaces from A to Z. Tips for choosing and preparing plaster for stoves and fireplaces Heat-resistant decorative plaster for fireplaces

Plastering the surface of stoves, chimneys and fireplaces is carried out for different purposes: sealing masonry joints, enhancing thermal insulation, preparing tiles or tiles before installing them, creating an independent decorative coating. There are many requirements for application compositions: they must withstand frequent rises and changes in temperature, have good ductility, strength and adhesion and, ideally, modeling properties. Factory mixtures have suitable characteristics, but due to their high cost, people are looking for alternative options and often prepare them with their own hands.

The main ingredients used are:

Clay of medium fat content, introduced into the solution in a soaked form. It is kneaded well, filled with water and left for 1-1.5 days; when the liquid is completely absorbed, its addition is required.
River sand: clean, dry and sifted to remove large fractions and debris.
Slaked lime, combining the functions of a binder and plasticizer. A distinctive feature of mixtures based on it is good crack resistance.
High-grade cement: heat-resistant or PC with strength grade M400.
Gypsum, which increases plasticity and allows the formation of complex textures. The downside is a decrease in pot life from the standard 1-3 hours to 15 minutes.
Other heat-resistant fillers: fiberglass, asbestos, designed to strengthen the plaster mortar and achieve the desired thickness.

Proportions for the most common recipes:

Clay	Sand	Slaked lime	Asbestos	PC M400	Fiberglass	Construction gypsum
1	2	—	—	—	0,1	—
1	2	1	0,2	—	—	—
1	2	—	0,1	1	—	—
—	1	2	—	—	0,2	1
—	2	1	0,1	—	—	—
1	3	—	—	—	—	0,25

To independently obtain a high-quality refractory mixture, it is important to properly prepare the components: all dry particles are sifted or ground through a coarse sieve, and an active binder is added to the composition. In practice, this means checking the expiration date of the Portland cement or gypsum and pre-soaking the clay and/or lime. A properly prepared solution has a uniform structure and medium density; it is ground and smoothed with a spatula in a thin layer. If you want to mix decorative heat-resistant plaster at home, part of the sand is replaced with marble chips or a similar colored fine filler.

For filling cracks, leveling and finishing, it is better to choose ready-made options. This is explained primarily by the impossibility of accurately determining the fat content of the clay and the quality of the remaining ingredients, which leads to an inevitable violation of the proportions and subsequently to coloring and cracking of the coating. Any building composition with more than 2 components is considered complex; stove plaster is no exception; if not prepared correctly, it will not withstand frequent cycles of overheating and cooling. If you have no experience at all, you should choose brands with the addition of silicates, produced in buckets and not requiring dissolution or mixing.

Methods for strengthening solutions

Natural materials are used as reinforcement: fiberglass, hemp, stone wool, heat-resistant fiber. In old recipes, table salt is included along with clay, but this additive cannot be considered as a strengthening agent. Time-tested impurities include asbestos (in the form of fibers or individual particles), but due to its toxicity, compositions containing it are not suitable for indoor use; it is increasingly being replaced with fiberglass.

In addition to introducing special additives, plaster for stoves and fireplaces is reinforced with fine-mesh metal mesh (in increments of 5-25 mm) or burlap soaked in clay. This hardening option is recommended for thick-layer application or when preparing surfaces for covering with heavy materials. To fix the mesh, you should buy special nails; plastic or metal screws are not suitable in this case.

Plastering technology

The process begins with preparing the tools. Structures in use require thorough cleaning, condition assessment, and, if necessary, the masonry is renewed or strengthened. Finishing of new ones begins after the final strength has been gained (i.e., plastering should be done no earlier than a month), a few days before the start of work, the stove is melted, slightly warmed up and allowed to cool again, but not completely. In general, the following steps are followed:

1. Cleaning the outer surface of old or masonry mortar with mandatory cleaning of the seams by 5 mm. In case of severe shedding, jointing to a depth of 1 cm is allowed, but you should be prepared for an increase in consumption.

2. Thorough dust removal, washing if necessary. This stage is carried out before and after cleaning the seams.

3. Treatment with special primers.

4. Heating until the walls reach 50-60 °C. Plastering a stove with cold surfaces is considered a violation of technology.

5. Reinforcement with mesh made of non-combustible materials or installation of beacons. The optimal thickness of the applied base layer is 8-10 mm; to obtain a flat surface, it is worth using a leveling profile (fixed to the same mortar or plaster). The second method is to cover the walls with a fine-mesh metal mesh with a distance of 3-4 mm from the main surface and secure it with long nails. In the first case, it is easier to plaster the stove, but it is not always suitable, it all depends on the reliability and evenness of the base.

6. Wetting the walls of fireplace stoves with water, preparing a liquid composition and spraying the walls with it. This stage is performed with the aim of filling seams, small pores and improving the quality of adhesion of ceramic or fireclay materials to plaster. The solution applied during the spraying process does not need to be leveled. The next step begins after its initial setting, but before it has completely hardened.

7. Installation of the main working layer. The number depends on the unevenness of the masonry; the best option is a single-layer laying with a final thickness of 5-8 mm (maximum up to 1 cm); if repeating is necessary, stick to 4-5 mm at a time. Multi-layer leveling is avoided; the coating may slide under its own weight.

8. Covering. At this stage, by analogy with spraying, more liquid mixtures are used, the goal is to eliminate minor defects and obtain a smooth surface. Immediately after application, the walls are rubbed with a wooden float or a cloth soaked in the solution.

9. Forming corners using special slats (similar to slopes), removing beacons (if any), final cleaning and grinding.

Further actions depend on the chosen finishing method. The first kindling is carried out no earlier than 3 days later; early ignition and heating are considered gross violations of technology. Any defects are eliminated immediately: the cracks are filled with fresh compound until they stop completely. Finishing the stove with decorative plaster is carried out after the main heat-resistant leveling layer has set; the sequence of actions is influenced by its type and brand. To improve adhesion, the resulting coating is once again treated with a primer (according to reviews, Parade G-77 has suitable characteristics); when working with Venetian, it is worth buying the appropriate option from one manufacturer.

Decorative plaster of stoves is practically no different from work with ordinary walls and facades; the only limitation is its final thickness. For reliable operation, it should not exceed 5 mm; without experience, such a result is difficult to achieve on your own. The finishing process is completed by painting; it is carried out after the fireplace walls have completely dried. An alternative method is to coat the surfaces with lime milk and salt; it is selected when decorating masonry in a rustic style.

Tips for choosing plaster for stoves

When purchasing ready-made mixtures, the following criteria are taken into account:

Environmentally friendly, preference is given to options based on natural materials, without synthetic additives.
There is a need to enhance thermal insulation properties; compositions with light heat-resistant fillers have the necessary characteristics.
Intended purpose - relatively cheap heat-resistant plasters are used to close seams and level the surface (the best reviews are from domestic brands Pechnik, Terracotta and Plitonit), for decorative finishing - modeling thin-layer varieties on a silicone basis and Venetian. Among the latter, brands such as Luciano, Ella, Calce Grassello and others, including natural marble and mineral chips, can withstand frequent temperature changes.
Type of finishing decor. Most affordable mixtures have a gray color, which can be changed either by whitewashing or by applying expensive organic-crime heat-resistant enamels. Therefore, if you want to create a texture, you should choose the white color option. When planning to cover fireplace stoves with tiles, preference is given to compositions with maximum bonding properties; in this case, plaster-adhesive ones will be optimal.

Review of prices for ready-mixed plaster mixtures

Brand name, manufacturer	Purpose, brief description	Fire resistance, °C	Package weight, kg	Price, rubles
Pechnik, Pechkoff	Household stoves and fireplaces	600	20	280
Terracotta, brand of the same name	Heat-resistant plaster based on kaolin clay	200	25	370
Plitonit Superfireplace Thermal plaster	Dry heat-resistant mixture of white color for leveling and finishing chimneys and fireplace stoves, reinforced with reinforcing fibers	400	25	555
Haftmörtel "Das Original", Ortner	Fireproof plaster for bonding ceramic and fireclay materials, creating a leveling or modeling relief layer	1100	20	5330
Kreativputz Universal Rath	Fine-grained, quick-setting compound that does not require reinforcement	200	20	3300

Properly applied plaster has a smooth, even surface and does not crack when exposed to high temperatures. When applying it, it is important not only to strictly follow all stages of the work, but also to the type of mixture used.

What is the need for plastering?

You should not leave the stove or fireplace unfinished. There are several reasons for this:

attractive appearance;
creation of an additional hermetic layer: even if the brick joints crack, the likelihood of carbon monoxide leaking into the room is significantly reduced;
hygiene: alignment of masonry joints prevents dust from settling on them.

That is why, after building a stove or fireplace, it is better to plaster them or cover them with heat-resistant ceramic tiles, porcelain stoneware or stone. The first option is used most often. After all, the plaster mixture is inexpensive, looks neat and lasts quite a long time.

If you want to master the finishing of stoves and fireplaces at a professional level, then I recommend you a video course by Alexander Zalutsky, a stove maker with twenty years of experience. The lessons cover in detail the technologies for decorating fireplaces with tiles, stone and plaster. Only the experience of the master and practical advice without water 👍

How to plaster: choose a fireproof mortar

The main requirements for mixtures used for finishing home stoves and fireplaces include heat resistance, the ability to withstand temperature changes, high elasticity and resistance to cracking. Conventional solutions used in construction are not suitable here. The following types of heat-resistant mixtures are used for plastering stoves and fireplaces:

clay-lime:
cement-clay:
clay-gypsum;
mixed using several binders.

Manufacturers introduce different types of plasticizers into these mixtures, as well as moisture-retaining additives, with the help of which the rate of hardening of the solution is regulated. It is more convenient to work with them, since they set more slowly.

As a rule, two types of refractory compounds are produced. The first is used for rough primary finishing. It can be applied in a thick layer up to 10 mm. The second type of mixture is used only for final leveling of the surface. This layer is thinner, up to 3 mm. Finely dispersed components are introduced into the composition of the finishing solution, making it possible to obtain a perfectly flat and smooth surface, which can later be painted or coated

A fireplace in a house or country house is a place of attraction for the whole family. It’s clear that you want it to be beautiful, but practicality also doesn’t hurt - soot and soot, dirt or tar from firewood, all this often ends up on the walls of the portal. For this reason, the surface must be easy to clean. In addition, the finish of the fireplace must be heat-resistant - although the sides of the fireplace do not heat up to the same temperatures as the stove, this requirement should not be neglected. Not many materials meet these requirements. This is heat-resistant plaster, special types of ceramic tiles and stone - natural or decorative.

Fireplace plaster

Plaster is one of the simple and practical options for decorating a brick fireplace. A few years ago, plastered surfaces were whitewashed or painted. Today it is possible to apply a decorative layer with different textures on top of ordinary plaster.

Types of plaster for fireplaces

Finishing a fireplace with plaster is popular for the reason that any design can be developed. The second plus is that if everything is done correctly, you can achieve a smooth surface, the finish is beautiful and durable. For plastering fireplaces, the same compositions are used as for brick stoves. Although the heating temperatures of the surfaces differ, the plaster mixtures are made the same. There are two options: make the plaster composition yourself or buy a ready-made one. If you don’t have experience working with clay and determining its fat content, it’s better to buy one. Store-bought plasters for fireplaces and stoves contain additives and additives that make the surface more durable and cracks are less likely to appear in it.

As a rule, each manufacturer has two formulations with different properties. The first is basic, for rough finishing. It can be applied in a fairly thick layer - up to 10 mm. After drying, the second layer is laid - the finishing layer. It contains more finely ground substances, is applied in a thin layer - usually up to 3 mm, and the surface is smooth. Such a surface can already be painted if it has been plastered smoothly) or decorative plaster can be applied.

If you want to finish the fireplace at a minimal cost, you can make plaster compositions from clay, sand and lime yourself. But, let us repeat once again, without experience working with clay, it is difficult to ensure that homemade plaster does not crack. Compositions for plastering a fireplace for making them yourself are different, here are a few proven ones:

Clay-lime:
- 1 part clay and slaked lime + 2 parts sand;
- based on slaked lime - 2 parts lime, one part gypsum and sand.
Cement-clay: one part each of clay and cement (M 500) + 2 parts sand;

To make the fireplace plaster solution more durable, reinforcing fibers are added to it. Previously, it was finely chopped straw, later - asbestos fibers, and today glass or fiber fiber is mainly added. The fractional part of this additive is small - 0.1-0.2 parts. It is added to the dry components (cement and sand), and everything is mixed. The dry mixture is added to the clay and/or lime dough, mixed thoroughly again, and water is added if necessary.

It is better to take lime already slaked, in the form of lime paste. If you extinguish it at home, unreacted particles always remain, which are then extinguished during the operation of the fireplace, destroying the plastered surface. Regarding sand, its quantity is precisely selected depending on the fat content of the clay. The solution must be sufficiently plastic. The fat content of the solution is checked using a piece of wood. Dip it into the solution and remove it. If an even layer 2-3 mm thick remains on the surface, the solution is normal. If the layer is thick and lumpy, you need to add sand; if the stick is almost clean, add clay.

The clay is pre-soaked (2 days or until all the lumps are limp), then rubbed through a metal sieve with a mesh of 2 cm. The ground clay dough is once again pressed through the mesh, but with a fine mesh of 0.5-0.7 mm.

You need quarry sand, it must be clean and dry. It is also sifted before use.

For those who don’t want to deal with homemade compounds, here are several companies that produce plaster for fireplaces and stoves. The following compositions performed normally:

Plitonite super fireplace refractory;
Petromix KU;
heat-resistant Terracotta plaster;
Bossnab;
RS Parade;
rtner;
Kiln plaster HEFNERPUTZ.

The list includes both domestic and European manufacturers. This is not to say that Russian compounds are worse, but working with imported ones is easier.

Features of plastering stoves and fireplaces

The technique of applying the solution itself is no different: a certain layer is applied (sprayed) with a spatula or a special ladle, then leveled (possibly using beacons). The main points are to prepare the fireplace surface for plastering:

First, all old finishing, if any, is removed from the walls - paint, lime, remains of plaster, mortar, etc. Only clean brick should remain.
For better adhesion of the plaster mortar to the surface, the seams are deepened by about 1-1.5 cm. Take jointing, a chisel or a screwdriver and scrape out the mortar in the seams.
All existing cracks are sealed with a repair compound or heat-resistant sealant (which can withstand heating up to 800°C).
When everything is prepared, take a brush with long bristles and clean the surface well. It must be clean.
The following are the options:
- If the surface of the fireplace is relatively flat (the difference is less than 5 mm), you can wet the walls and begin to apply plaster.
- If, due to the curvature of the surface, the layer will have to be made more than 5 mm, reinforcement is necessary. A metal mesh with a fine mesh is stuffed onto the walls of the fireplace. It is secured with nails, which are driven into the seams (the seams can be left unstitched, or stitched, but not so deeply). To ensure that the caps hold the mesh, metal washers larger than the mesh size are put on. Plaster is applied over this stack. In this case, you can be sure that the plaster will not fall off.

Before you start plastering the fireplace, carefully read the instructions on the package. It usually describes under what conditions and how the plaster should be applied. But experts advise lighting the fireplace, heating the walls to 60°C, then moistening the surface and starting to plaster. The walls are heated so that the brick takes on its “working” dimensions. In this case, there is less chance that the plaster will tear when heated. Wetting with water is necessary to ensure that the solution is not too dry: brick is hygroscopic. If it is dry, it quickly draws water out of the plaster mortar and it becomes too dry and does not harden to its normal state. The result is cracks on the surface.

A few more points regarding drying. When plastering a fireplace, at least two layers are applied. The second can be applied only after the first has dried completely. To speed up drying, you can create a draft, but you cannot light the fireplace. The same applies to the second - finishing - layer.

For the technology of plastering stoves and fireplaces, see the following video.

Fireplace cladding with tiles and porcelain stoneware

The fireplace is finished with tiles or porcelain stoneware using a special heat-resistant adhesive. Not all tiles are suitable for such work. It should withstand heat well, be durable, dense (with small pores), plus, it should be easy to care for.

Decorating a fireplace with ordinary ceramic tiles is a lottery. If you're lucky, it will stand normally; if not, after a while the layer of glaze will be covered with a network of tiny cracks. The appearance will be “not very good” and it will be difficult to wash. If possible, it is better to use special materials:

Terracotta. The tile has an unglazed surface and has a characteristic color, which is how it got its name. It has a coefficient of thermal expansion similar to brick, so it does not crack.
Terracotta - tiles for finishing fireplaces and stoves
Majolica. These are the same terracotta tiles only with glaze applied to the front side. The technology is more complex, the price is higher. Decorating a fireplace with majolica requires careful development of the sketch - you won’t be able to cut such tiles. It also requires a highly qualified craftsman - the slightest deviations are noticeable. Apparently, for this reason, and also because of the very high price, you can more often see fireplaces and stoves with majolica fragments. I must say that these fragments greatly decorate and enliven the interior.
Majolica - colorful and beautiful
Heat-resistant clinker tiles. It is made from a mixture of several types of clay, with the addition of fireclay. It is molded, pressed, then fired. The result is a thin - 9-12 mm thick - and durable tile. Colors range from whitish-gray to brown.
Porcelain tiles. The production technology is similar - first the composition is pressed, then fired. The components differ: in addition to several types of clay, quartz sand, fine granite or marble chips, dyes, oxides and metal salts are added. The structure of porcelain stoneware is low-porous, it tolerates both high and low temperatures well. The technology makes it possible to obtain material that imitates marble, other natural stones, terracotta, clinker and majolica. The disadvantage of porcelain stoneware is that it is difficult to cut and has a lot of weight. For cladding fireplaces, thin slabs are used, so the weight is not terrible, and you can send it to the company to cut it (you just need to know the exact dimensions of the required fragments).
Finishing the fireplace with porcelain stoneware - you can design it in any style
Tiles. The production technology is not much different - the clay is molded and fired in a kiln. The main difference is the shape and method of installation. The tiles are installed during the laying of the stove or fireplace - the fragments are fixed in the seams using wires. So finishing a finished fireplace with tiles is impossible.

Special tiles for facing fireplaces and stoves are made in small or medium formats, and the same porcelain stoneware is available in large slabs. Seamless installation is certainly attractive, but there is no guarantee that such a finish will not fall off. The coefficient of thermal expansion is quite different, which is why incidents are possible.

Technology for installing tiles on the walls of the fireplace and exhaust pipe

All of the listed types of tiles, except tiles, are installed on fireplaces using the same technology. Finishing a fireplace with tiles begins with the preparatory stage, and it coincides exactly with the one described above: clean the surface, unstitch the seams, heat to 60°C, wet it and you can start finishing the fireplace with tiles.

If there are large irregularities, the fireplace must be plastered. Mortars - any containing clay and cement, but not containing lime. Preparation is standard, as is the plastering process. The difference is that the second leveling layer does not need to be applied.

The tiles should be laid on the walls of the fireplace after they have completely dried. The laying technology is standard, the difference is in the thickness of the seams. For a fireplace, it is better to make them larger (to compensate for different amounts of thermal expansion), so instead of crosses, pieces of 9.5 mm thick plasterboard are used.

The adhesive is applied to the wall or tile and leveled with a notched trowel. The tile is pressed against the surface, rocking it from side to side to set it in the desired position. Set the distance between the fragments using plasterboard spacers. Remove from 3-4 hours after installation.

The tiles on the fireplace are left to dry. The exact time depends on the glue used and the weather, and is usually indicated on the glue packaging. The last stage is filling the seams. The grout used for the joints is also special; it is better to buy it together with glue from the same company, so that there are no compatibility problems. The process is also standard - the composition is diluted with water according to the instructions, the seams are filled with a rubber spatula or from a construction syringe. The freshly applied solution is leveled, forming a beautiful seam. Excess is wiped off with a soft cloth.

Here are some tips from the experts:

To ensure that the tiles do not fall, attach a metal mesh with a fine mesh to the wall. Better yet, hammer nails into the seams and intertwine them with soft steel wire, creating a wire frame. This option is better because in difficult places the mesh can be made thicker. This step is necessary if you are going to install heavy porcelain tiles or large format tiles.
In order not to put a thick layer of glue, apply it both to the wall and to the tiles, and remove the excess here and there with a notched trowel.
Before laying the tiles, lay them out on the floor so you can get a realistic idea of how attractive the finish will be.
After laying each tile, excess mortar is removed from the joints. They will then be filled with a special paste. The surface of the tile is immediately wiped clean - if the glue hardens, it is almost impossible to clean it.

The main thing during this work is to ensure that no air cavities form under the finishing. Air has a high coefficient of expansion and, when heated, it will eventually tear the tiles away from the wall.

Video tutorials for finishing a fireplace with tiles

No matter how much you read about how to do it, it’s much more useful to look - you can grasp more details.

How to veneer a fireplace with stone

Finishing a fireplace with stone is technologically not much different from laying tiles. The difference is in working with the material itself, but there are almost no technical features. The only thing is that when using natural flagstone, be sure to cover the fireplace with mesh. Without it it will fall off.

Finishing the fireplace with stone is one of the options

Features of working with artificial gypsum stone

This type of decorative stone is inexpensive and lightweight; it can be used to decorate fireplaces, especially without overloading the ceilings. There are only some nuances, without which you will not achieve a good result.

The technology for producing gypsum stone is such that each element has some irregularities, sagging, and protrusions. We grind them off with a knife, fortunately the plaster is cut without problems. We grind each cladding element so that at the back, around the perimeter, a frame is formed with an angle of 45° (or so).

Moreover, often the corner elements of the gypsum decorative stone are several millimeters higher than the ordinary ones from the same collection. In order for the cladding to look monolithic, this difference also has to be removed - grinded down. When all the cladding elements are adjusted, they can be glued into place. Heat-resistant glue is used for cladding fireplaces, although with the correct design it almost does not heat up.

Working with natural stone

Most often, fireplaces are faced with natural stone, sawn into plates. It is also called flagstone or stone tiles. The shape of all the fragments is different, you have to adjust it to make everything look beautiful. In this case, it is definitely better to first lay out the entire picture on some plane, select and process the elements. Only after the mosaic is complete can it be glued. The entire technology for installing a fireplace on the walls is described above and is practically no different. The whole process can be seen in the video.

Interesting options for finishing fireplaces (photo)

All the methods described above can be combined to create finishes in different styles. Sometimes it turns out very beautiful. We post some already implemented ideas below.

There are two options to achieve this effect - paint the existing brick fireplace or veneer it with clinker tiles

This is polished porcelain stoneware

This is unpolished porcelain tile, small format. As you can see, it fits well into round shapes. Horizontal surfaces and columns are also porcelain tiles of a similar texture, but in the form of slabs

Smooth clinker tiles - strictly and functional

Tile inserts - beauty

How pleasant it is to spend cold evenings with a book, a cup of tea, or a glass of wine by an open fire! But in order for the hearth to be safe and become a harmonious part of the interior, special plaster for stoves and fireplaces will be required. When burning, the flame heats the structure, so it will need a special finish that has high-temperature characteristics.

We will share with you in this article what properties plasters for Russian stoves and fireplaces should have, and how to prepare them yourself.

Types of plasters for stoves and fireplaces

Building a real fireplace in a house requires many years of experience. After all, the safety of all household members depends on the organization of the chimney. But when the fireplace has already been built, you can give it a finished look with your own hands. To do this, it needs to be plastered.

Finishing will make the stove more attractive and also protect it from mold and insects.

What properties should plaster for stoves and fireplaces have? First of all, it is resistance to high temperatures, because the structure can get very hot. Fireproof plaster for a stove is a composition of a special reinforcing (heat-resistant) material that gives the treated surface strength and elasticity, protecting it from cracking, mechanical damage, and moisture. Special heat-resistant plaster for the stove can be used to finish the structure, without fear that the outer surface will be damaged by high temperature.

Teach: stores often sell ready-made universal compositions for interior and exterior work, but they should not be used for finishing fireplaces, since they do not have the necessary heat resistance.

Stores sell ready-made dry high temperature mixtures for plastering stoves - “Terracotta”, “Pechnik”, “ARMIERUNGSPUTZ”, “KREATIVPUTZ”, fireproof concrete “Rath CARATH”. They differ from conventional finishing compositions in that they contain various impurities (fireclay clay, glass, quartz sand, cement aluminate), which allow them to withstand temperatures up to 1200-1700˚C.

On a note: heat-resistant finishing is also called heat- or fire-resistant.

Heat-resistant plaster for stoves based on fireclay kaolin powder is used for finishing fireplaces, fireplaces, barbecues, barbecues and can withstand heating up to +400°C

How to prepare a heat-resistant solution with your own hands

You can make the rough finishing composition for fireplaces yourself. There are many recipes for mixtures, most often they are, or with the addition of a reinforcing substance. Options for mortar for plastering ovens proportions:

clay (1 part): slaked lime (1): sifted sand (2 parts);
clay (1): cement (1): sand (2);
gypsum (1): sand (1): slaked lime (2) - the solution is prepared in small portions, as it hardens quickly.

First, the components are mixed dry, then diluted with water, clay, or lime milk with the addition of 1/10 of a reinforcing substance (fiberglass, straw, asbestos).

Fireproof plaster for stoves and fireplaces, prepared by hand

Rough finishing technology

Plastering the walls of the fireplace is carried out in 3 steps:

splash;
priming;
cover.

Should be 10-20 mm.

Attention: At least a month must pass from laying the fireplace until the plaster is applied (during this time the structure will dry and will not produce sediment during finishing).

Before applying the mixture, the surface of the oven should be cleared of any remaining masonry mortar, the seams should be cleaned and deepened, and the surface should be primed

The next step is reinforcement. Place dowels on the walls of the fireplace, which will enhance the adhesion of the mortar to the surface.

Advice: Before applying the mixture, the oven must be heated and its walls moistened with water.

Surface reinforcement will allow high-quality fixation of the heat-resistant mixture for oven plaster

The first two layers of the solution are made more liquid. The last layer is applied as densely and vigorously as possible. The mixture is distributed over the entire area of the site and leveled. If after the finishing has dried, they are embroidered and removed.

Secret: To ensure that the plaster dries evenly and gradually, the treated surface is covered with damp burlap.

The applied fireproof mixture for plastering stoves is sanded and then subjected to final decorative finishing.

Using decorative cladding for hearths

In addition to rough leveling followed by finishing with stone or tiles, decorative plaster can also be used for stoves and fireplaces. The main requirements for such a coating are heat resistance and elasticity. For these purposes, finishing based on stone chips, acrylic and silicone resins, silicates (marmorine, travertine) is suitable.

Attention: decorative finishing is applied only to the rough coating.

Heat-resistant plaster for stoves and fireplaces on a mineral basis - beautiful and practical

Learn more about how Venetian plastering of stoves is done in the video:

Similar names: heat-resistant, heat-resistant, fire-resistant, stove plaster and plaster for stoves and fireplaces.

Heat-resistant high-strength plaster "Terracotta" is used for leveling and plastering stoves, fireplaces, barbecue stoves, barbecue areas and other heated surfaces.

COMPOUND:

Fireclay kaolin dust, heat-resistant binder, functional additives.

DISTINGUISHING PROPERTIES:

Heat-resistant, environmentally friendly, highly plastic mixture. Easy to apply and level. Has a high adhesion force to the surface. Retains its properties when heated to +400°C.

Aerated concrete, ceramic and fireclay bricks.

SURFACE PREPARATION:

The base must be free of dust, dirt, lime, grease, paint, etc. Before starting work, the base must be moistened. It is not recommended to apply plaster to painted, plastic, metal and wooden surfaces.

SPECIFICATIONS:

mixture color: ocher gray

moisture content of the dry mixture: not > 1%

open time: 15 minutes

solution viability: at least 60 minutes

application temperature: from +5°С to +35°С

heat resistance: +400°С

compressive strength grade: M 75

MIXTURE CONSUMPTION:

When applied to a surface with a layer of 5 mm, the mixture consumption is 5 kg/m2.

METHOD OF PREPARING THE SOLUTION:

Mix the powder with clean water at room temperature in accordance with the recommendations for the amount of mixing water until a homogeneous mass is obtained without the formation of lumps. Leave for 15 minutes. After re-mixing, the mixture is ready for use and can be used within 60 minutes.

EXECUTION OF WORK:

The finished solution is applied to the surface in a layer of up to 10 mm and then leveled. If necessary, alignment is performed several times. The next layer is applied provided that the previous one is completely dry. For faster drying, it is necessary to ensure good ventilation of the room. Forced drying (heaters, fans, hair dryers) is not allowed. Work is carried out at temperatures from +5 to +35°C.

PACKING AND STORAGE:

Available in bags of 5 kg and 25 kg. The guaranteed shelf life of the mixture in undamaged original packaging in dry rooms at temperatures from -40 to +40°C is 12 months. Use of the mixture after 12 months from the date of manufacture is not recommended.

The products have a CERTIFICATE OF CONFORMITY and a FIRE SAFETY CERTIFICATE.

The product is safe for humans.