How to choose the right heat-resistant glue for stoves and fireplaces, purpose and types of compositions
Glue is a versatile product used in the household, construction and medical fields. Glue has many modifications, among which heat resistance is considered the most universal. What are its advantages and disadvantages, where it can be used and what features are different to use, we will find out below.
Appointment
Heat Resistant Glue can be used for its intended purpose, for ordinary household needs, but it was originally created for:
- use in electric and gas ovens;
- tiled finishes;
- when collecting fireplaces and stoves.
Here the main distinguishing feature of the composition is revealed - resistance to high temperatures, which ordinary adhesive solutions cannot boast of.
For electric and gas ovens
One of the main elements of any oven is the glass, through which the hostess controls the cooking process. If damaged, the old glass is removed and the new one is attached with heat-resistant glue. Thus, the glass is firmly fixed in one place, and high temperatures do not destroy the seals at the joints.
For tiles
Tiling a warm floor or space next to stoves and fireplaces requires the use of a special tile adhesive with heat resistant properties. It allows you to reliably fix the facing tiles in place, maintaining all the declared characteristics at significant temperature differences. It is widely used in construction.
For fireplaces and stoves
When building fireplaces and stoves, special attention is paid to cladding and decoration. The elements must be firmly fixed and withstand high temperatures. To solve this problem, a heat-resistant glue is used. It prepares quickly and after using it, there is no need to worry about the tile falling or cracking. In some cases, heat-resistant glue is used as a binder when laying bricks.
Compound
The heat resistance of the glue is provided by a special composition that distinguishes the heat-resistant qualities from other products.The composition of heat-resistant glue includes such substances as:
- sand;
- cement;
- synthetic additives;
- mineral components;
- refractory clay fibers.
Cement
In the manufacture of heat resistant adhesives, cement is added to provide dry strength and bind all components together. Depending on its percentage in the mixture, the final product slightly changes its properties and scope, for example:
- mixtures used in masonry construction;
- mixtures used for facing works.
Sand
Quartz sand acts as a filler which has good resistance to high temperatures. It is not used in all mixtures, but most manufacturers prefer it as a versatile and inexpensive component.
Fireclay fibers
Fireclay fiber is a refractory material that increases the heat resistance of the adhesive. It is made from special types of clay, which undergoes a firing procedure. Under the influence of intense heat, the water in the clay evaporates, which increases the protective characteristics of the material.
To note! Most manufacturers add zirconium oxide to fireclay. This refractory material further increases the thermal resistance of the glue.
Mineral components
The addition of mineral components allows:
- achieve the plasticity of the substance;
- achieve high quality adhesion with other substances.
Without these properties, the glue will be difficult to work with and will not be able to reliably bind the necessary materials together.
Synthetic additives
Thanks to the synthetic additives that make up the glue, it has properties such as:
- moisture resistance;
- uniform change in the volume of a substance when heated;
- optimizes the heat transfer process.
The quantity and quality of additives are different for each manufacturer, which affects the final quality of the glue.
Properties
In addition to the individual characteristics inherent in an individual manufacturer, high-temperature glue has a set of basic characteristics that are available for the entire line of products of this type. These include:
- Plastic;
- moisture resistance;
- heat resistance;
- respect the environment;
- linear expansion.
Heat resistance
Heat resistance refers to the ability of materials to withstand high temperatures, without strong deformation and destruction. For heat-resistant mixtures, this indicator is at a high level, which makes it possible to operate them without additional risks. Depending on the composition of the glue, this indicator may fluctuate up or down, but even for the cheapest products it is several times higher than the basic values.
Moisture resistance
The presence of such a parameter as moisture resistance allows the glue not to deteriorate under the influence of liquid. Since heat-resistant materials are used in places where the alternation of humidity and high temperature is normal, moisture resistance is a necessary property. The lack of moisture resistance or its insufficient value leads to the destruction of the fixed structure.
Plastic
Exposure to high temperatures involves deformation of the substance. Accordingly, the heat resistant adhesive should have good ductility. It allows to adapt to the deformation of the base without destroying the structure of the substance. Additionally, the ductility aids the finishing process by preventing cracking or delamination.This indicator is very popular with manufacturers.
heat exchange
Heat resistant adhesive with improved thermal conductivity allows you to:
- reduce overheating of the surface with which it comes into contact;
- a reduction in superheat leads to a reduction in deformation, which has a positive effect on strength.
To note! Products with high thermal conductivity are made from environmentally friendly materials that do not emit toxic substances when heated.
Linear expansion
Linear expansion is an indicator that determines the ratio of the change in volume of a substance when heated by a certain amount, taking into account constant pressure. If two substances have different coefficients of linear expansion, the probability of their destruction is high.
Consider this feature when choosing a heat resistant adhesive. Otherwise, negative consequences cannot be avoided.Experienced builders know how to neutralize the difference between these values by adding certain fillers to the heat-resistant glue.
Respect the environment
When purchasing materials in the construction market, more and more attention is paid to such an indicator as environmental friendliness. This is the right approach, because products that are not safe for the environment harm everyone without exception, including careless owners who have decided to save on quality. Environmental friendliness of heat-resistant glue is of great importance, since when heated, toxic substances are released into the atmosphere much more intensely and in a larger volume.Manufacturers try to use only environmentally friendly materials, adding harmful ingredients only in extreme cases.
Kinds
Types of heat-resistant adhesives fall into two broad categories:
- by the method of application;
- by the form of release.
According to the method of application, heat-resistant glue is subdivided into:
- used for ceramic products;
- used in masonry construction;
- for finishing the fireplace portal.
Depending on the form of release, the heat-resistant glue is:
- in the form of a liquid mixture;
- in powder form.
On appointment
Despite the availability of universal products used for gluing any materials, its quality leaves much to be desired, and it is more profitable to use special mixtures made taking into account the characteristics of the surfaces to be glued.
Products that reliably join metal objects together do not work well with glass products. Refractory compounds also have their own "specialization", which must be taken into account when operating.
To finish the portal
Heat-resistant mixtures used for finishing the gate have such individual characteristics as:
- increased thermal resistance, since the portal of the fireplace or stove experiences significant thermal stress;
- reduced elasticity.
The presence of these features allows the heat-resistant adhesive not to collapse during significant temperature drops and retain the required shape.
For basic masonry or masonry
The adhesive used in the construction of base masonry, brick or stone, has improved elasticity. This property allows the masonry and its finishing elements to be kept intact, increasing the overall life of the structure.In addition, due to the mineral compounds that are part of the product, the masonry joint does not shrink strongly, retaining its thickness over a long period of time.
Ceramic
Products intended for gluing ceramic decorative parts include a special combination of synthetic components, which, together with sand and cement, have a strong effect. The adhesive properties of the product and its elasticity are an order of magnitude higher than normal.
By release form
The choice of the form of release largely depends on the location of the construction activities, the ultimate purpose and the surrounding factors. It is recommended to purchase ready-made mixtures that do not require additional preparation and specific knowledge. Moreover, you should not stock up on a large quantity of products, hoping to use them in the distant future. Most heat resistant formulations have a shelf life of no more than 12 months.
Powder mixes
Powder mixes are not very popular. It is because of:
- the complexity of their use;
- the need for special equipment and skills;
- narrow scope;
To achieve the desired result, the powder is subjected to a special heat treatment, during which it changes its structure. It is mainly used for bonding uneven surfaces.
Liquid mixtures
Liquid mixtures, in most cases, are already ready for use, which is convenient for the buyer. He does not have to dilute the glue himself, choosing the optimal consistency. In the building materials market, products made in liquid form account for 90% of the total volume.It has an affordable price and a wide range of modifications to suit any situation.
popular brands
The range of heat-resistant products used for bonding is so large that it is difficult for an ordinary buyer to make the right choice. In order not to get into an embarrassing situation by throwing money down the drain, let's get acquainted with the most popular brands of heat-resistant glue and find out their distinctive features.
Terracotta
Terracotta is used for:
- installation of a warm floor;
- facing work, on surfaces exposed to high temperatures.
Benefits :
- Plastic;
- reliably glues materials to each other;
- moisture resistant;
- the temperature ceiling at which terracotta does not lose its properties is 400 O;
- shelf life - 1 year, subject to storage conditions.
Profile
Scope - facing works associated with the use of stone, tile or porcelain stoneware. It is allowed to be used when installing a heated floor. Stored for 12 months. The limit values of the temperatures of the surfaces to be joined, the effect of which does not destroy the composition, is 200 O... The mix includes:
- cement;
- Quartz sand;
- modifying additives.
Scanmix
Products of the Finnish company, which are in active demand in the domestic market. Has a large number of positive reviews from consumers and is easy to use. Used for the construction and repair of ovens. Advantages of Scanmix:
- respect the environment;
- resistance to high temperatures;
- high adhesion rates;
- after application, the mixture hardens quickly;
- does not shrink;
- the risk of cracking is minimized.
Ivsil Termix
Used in the construction of fireplaces and stoves. The temperature limit for work surfaces is 250 O... Works well with:
- artificial and natural stone;
- floor tile;
- stoneware.
It is used when building a warm floor. The product contains aluminate cement, which increases its strength and heat resistance.
Ceresit Flex CM 16
Dry mix used in construction. Has the following characteristics:
- water resistance;
- frost resistance;
- high adhesion coefficient;
- it is allowed to use it facing a warm floor;
- the product is environmentally friendly;
- has elasticity and good resistance to various types of deformation.
Parade K-77
The product has high temperature resistance, the limit values of which reach 800 O... easy to use and adapts well to the worktop. Builders often use it as a heat-resistant coating. The retention period is six months from the date of issue.
To note! It is forbidden to apply Parade K-77 on coated surfaces.
Terracotta putty
If it is necessary to carry out facing measures in the fireplace area and adjacent places, a heat-resistant mastic from the company Terracott is used. It is a glue paste that contains soda glass. Thanks to its addition, the product does not lose its declared performance when heated to the 1200 mark. O.
Mixonit Thermo
The product is produced on the basis of German technologies, the use of which allows to achieve the following indicators:
- Versatility;
- heat resistance;
- does not form cracks over time;
- high elasticity;
- impermeability;
- resistance to negative temperatures.
Hercules
It is used in the construction of refractory structures, resistant to temperature effects of -50 O up to a record 1200 O... The allowable seam thickness, when working with Hercules, is 7 millimeters. Suitable for application on:
- fireclay brick;
- ceramic brick;
- Clay brick;
- clinker brick.
Polimin P11
It is applied on non-deformable surfaces that do not heat above 160 O... According to the manufacturer, the glue can withstand more than 70 freeze-thaw cycles without loss of quality. This allows it to be used in the construction of outdoor heating systems. It is allowed to use during tiling, with the use of tiles.
SM-17
Tile adhesive used for:
- flooring in saunas;
- oven liner;
- work with chipboard and drywall;
- shows itself well when interacting with large tiles;
- environmentally friendly product;
- used for interior and exterior work.
Cook
Heat-resistant dry glue, which includes:
- polymer additives;
- refractory clay;
- sand;
- cement.
The limit temperature that the Stove is able to withstand is 250 O... The shelf life does not exceed six months from the date of issue.
PalaTERMO-601
Heat resistant tile adhesive used for:
- chimney liner;
- kitchen cladding;
- floor heating;
- work with mosaics and glass tiles;
- construction work related to the design of the facade of the building.
Neomid
Universal putty from the company Neomid is used to work with:
- floor tile;
- concrete;
- brick;
- glass;
- Artificial stone.
The operating temperature range is -30 O up to 1300 O... The product is made from environmentally friendly materials. Surfaces treated with Neomid are protected from the formation of fungi and other bacteria.
Adesilex PG1
It is used in construction for bonding structures from:
- Rock;
- bricks;
- concrete.
Has low heat resistance. Operating temperature range - 5-23 O...Its modified version - Adesilex PG2 - has a higher thermal resistance and it is sometimes recommended to be used.
Heat resistant moment
Heat resistant adhesive from a world famous manufacturer. The substance contains epoxy resin. It shows itself well when working with:
- ceramic products;
- metal;
- glass.
It has good refractoriness indicators, which allows it to be used in areas with high temperature exposure.
Makroflex refractory putty
Heat resistant sealant with the following characteristics:
- Shelf life 2 years;
- application temperature - from 5 O Up to 40 O;
- heat resistant up to 260 O;
- frost resistant;
- good adhesion with glass, ceramic and enamel.
To note! Makroflex Refractory Sealer is not recommended for rusty metal, stone and acrylic surfaces.
Selection tips
When choosing a heat-resistant adhesive for your own needs, pay attention to the following characteristics:
- elasticity;
- fire resistance;
- respect the environment;
- compound;
- tolerance to temperature differences;
- membership;
- heat transfer;
- expiration date.
Elasticity
High elasticity allows you to smooth out changes in the volume of material and glue, having applied a high temperature effect on them. If there is no elasticity, the structure will quickly begin to deteriorate. The formation of cracks, as well as the partial destruction of the structure, are possible.
Fire resistance
Different manufacturers have different fire resistance, and this must be taken into account when choosing. Some mixtures can withstand temperatures up to 50 O, while others are able to withstand short-term exposure up to 1000 O and higher.Therefore, before buying, be sure to determine the temperature range, and then choose the composition that is suitable for it.
Special composition
The composition also has a significant impact on the characteristics of the product, since each manufacturer uses its own set of components. The degree of interaction with other materials, service life and other factors depend on this. Some components give the adhesive special properties that are not found in other products.
Resistant to sudden temperature changes
Resistance to temperature extremes is important in situations where work is performed outdoors. In this case, the glue will be affected not only by heat, but also by cold. Not all brands withstand such temperature fluctuations equally well, collapsing after several freeze-thaw cycles.
Respect the environment
Substances that contain harmful components, when heated, begin to release toxic compounds into the atmosphere. In this regard, they try to make heat-resistant mixtures from environmentally friendly materials.
Pay attention to the composition at the time of purchase and try not to buy products with questionable additives.
Lifetime
An important indicator, because all brands of heat-resistant glues have a different shelf life and storage. Often, these indicators depend on the influence of external factors and compliance with the operating conditions specified by the manufacturer. If they are violated, the heat-resistant glue quickly becomes unusable, which affects the general condition of the structure.
heat dissipation
Evacuating excess heat prevents:
- structural deformation;
- overheated.
The high heat transfer rates of the glue guarantee the safety of the structure for a long period of operation.
High degree of adhesion
It is necessary when gluing complex surfaces, such as:
- fireclay tiles;
- clinker;
- majolica;
- stoneware.
A heat-resistant adhesive with a high degree of adhesion firmly fixes the tile in one place, preventing it from shifting.
How to do masonry correctly
Working with heat-resistant glue, especially in masonry, requires some nuances. They help to get the job done efficiently and reliably. If you do the laying yourself, without the help of professionals, pay attention to the following nuances.
Operating mode
Correct construction of the workflow - 80% success. To perform finishing work on a fireplace or stove, follow the instructions below:
- Prepare your work surface by removing dirt and other components.
- The working surface is treated with a layer of primer several hours before the start of work, if it has increased absorbent properties.
- Follow adhesive manufacturing instructions if working with a dry mix. A deviation from the standards specified by the manufacturer will greatly affect the quality of the final product.
- Apply the finished solution to the work surface with a spatula.
- As soon as the solution is evenly distributed over the surface, we lay the tiles.
- Correction of the position of the tiles is possible within 2-3 minutes after laying. After that, it should not be touched for 2 days.
To note! The thickness of the screed on which the tiles are laid should not exceed 1 centimeter.
Storage and security rules
Store the adhesive under the following conditions:
- humidity - up to 60%;
- ambient temperature - 1-30 oh;
- shelf life - 12 months from the date of production.
Recommendations
Protect respiratory tract and eyes when handling heat resistant adhesive. If the glue gets on the mucous membrane, immediately rinse the affected area with plenty of fluid. If you follow the safety rules and the manufacturer's recommendations, problems with the finish should not occur.
Preparation of the composition at home
Home heat-resistant glue is prepared using the following technology:
- 1 part cement;
- a glass of table salt;
- 3 pieces of sand;
- 1 part fireclay.
We mix salt, sand and cement in dry form, then add clay diluted with water. We knead the heat-resistant glue to a uniform consistency using a trowel.