Heat-resistant adhesive is a very popular construction product, widely used for many works: laying ceramic, stone, marble, glass plates, insulation materials, etc. There is a huge range of it. It is used not only for gluing, but also for sealing, for example, bathrooms. Its application to the surface can be carried out in various ways. Apply the required amount of glue either pointwise or in a continuous layer.
Composition and properties of glue
The main components of dry glue are a cement-sand mixture, as well as synthetic and mineral additives, which give the composition elasticity, heat resistance, high strength. In addition, they protect the surface of the masonry from cracking. Heat-resistant glue can be used for masonry and facing work at an air temperature of -10 to +35 degrees C. After hardening, it has good adhesion, frost resistance and fire resistance (up to +1200 degrees Celsius).
Heat-resistant tile adhesive
Glue for laying tile is mainly used for facing work in places with regular significant temperature changes. This heat-resistant adhesive is used for facing chimneys, stoves, fireplaces, barbecue, fireboxes. It is also used for laying bricks, facing fireplaces and stoves with natural and artificial stone, clinker tiles. Very often used when working with underfloor heating.
How to choose glue?
To choose the necessary material for construction work is a great art. To prevent unnecessary loss of money, time and effort, it is necessary not only to understand the quality of the goods well, but also to have the necessary knowledge on its use. When choosing heat-resistant glue, it is necessary to clarify the maximum temperature that this type of product can withstand , as well as pay attention to where it is supposed to be used. Think also about the materials you will be gluing, about their composition. Heat-resistant adhesive should dry quickly, it must be sufficiently flexible. It is necessary to keep in mind its degree of adhesion: the higher it is, the better. High-quality heat-resistant adhesive for tiles must withstand temperatures up to one hundred and twenty degrees. It is clear that when the product dries, a harmful substance is released into the air , therefore , it is necessary to remember the toxicity of the selected adhesive. In addition, such a product will be used at high temperatures. It is best to stay on the glue with a minimum level of toxicity. The next step in your selection should be the waterproof performance. Adhesive abilities are provided by this particular feature. Experimenting with surface heating should be done after forty-eight hours, after the product has completely dried.
Fireproof adhesive for fireplace
The fireplace in the house is the personification of coziness, comfort, beauty, elegance. For its construction, as a rule, brick, mixture and glue are used. The choice of material for laying the fireplace stove is a rather important stage. Savings can sometimes lead to unpleasant consequences. Quality glue for a fireplace is a heat-resistant composition that has the following characteristics:
- elasticity, helping to maximize the preservation of the masonry structure;
- fire resistance;
- contains a binder fibrous substance.
These qualities make it possible to use heat-resistant glue for tiling, as well as for fixing plaster mesh and external processing of stone. The galvanized plaster mesh is fastened with nails to the surface, and on top they are tightened with a composition. The result is a fairly flat and stable surface.
Heat-resistant adhesive for stoves and fireplaces is able to withstand quite large temperature differences.
Glue for metal
Glue for metal - heat-resistant unique adhesive composition with high strength. It differs not only in composition, but also in the method of application. It can be spot applications and solid, on the entire surface area. A good heat-resistant adhesive for metal withstands temperatures up to four hundred degrees. When choosing it, you should pay attention to the time it dries, as well as the amount of toxic substances released, which is definitely important.
Surface preparation
The metal surface, as a rule, is rather contaminated with various paint residues, oils or corrosion. You can get rid of this mechanically and chemically.
Machining - cleaning the surface by abrasive (abrasive) impact, for example, using sandpaper, sandblasting or shot blasting, or a simple metal brush. The use of this type of processing not only cleans the surface, but also makes it more rough, which increases the surface area of the interaction of the adhesive with the metal, and, accordingly, the bonding strength.
Chemical treatment - the impact on the cleaned metal surface with a solution of alkali, acid or a special composition for cleaning and removing rust. Cleaning in this way is faster, cheaper, and also due to the formation of a chemically resistant layer on the metal surface, it significantly increases the strength and durability of the adhesive joint.
Security measures
Working with glue requires compliance with certain safety rules, since it includes cement that can irritate the mucous membrane. In case of accidental contact with the mouth, nose or eyes, rinse immediately with water. When working with heat-resistant adhesive in its dry form, use a respirator to protect respiratory organs from dust.