Glue for gas silicate blocks is a dry cement-sand powder with the addition of organic and mineral plasticizers. Available, as a rule, in packages of 25 kg. Used in the construction of external and internal walls.
The glue has many advantages:
- High heat-saving properties. Its use minimizes the risk of “cold bridges”.
- Strength, which is significantly higher than that of a cement-sand mixture.
- Resistant to weathering.
- Plasticity.
- The ability to create a thin seam, increasing the quality and appearance masonry
- Easy to mix.
- Financial benefit. Price cement mixture 2-3 times lower, but its costs are almost 6 times higher.
The glue contains special additives that prevent rapid drying. This allows you to tightly connect adjacent blocks, and the coupling will not lose strength for long years. The setting period of the solution is 3-4 hours, and the time during which the position of the block can be corrected is 10-15 minutes.
Adhesive for gas silicate blocks: features of choice
When choosing an adhesive composition for gas silicate, you need to pay attention to several factors:
- Best before date. "Out of date" or improperly stored gas silicate glue loses the main part of the fastening properties.
- Manufacturer. You should not chase low cost and buy glue from little-known companies. It is better not to risk the reliability of your home and buy a product from a well-established manufacturer.
- Weather. If the laying of gas silicate blocks occurs at temperatures below +5 °C, then frost-resistant compounds are used.
- Consumption. Before buying gas silicate glue, you need to check its consumption per 1 m3. On average, about 6 liters of water are required to knead 25 kg. At the same time the weight ready solution from 1 bag will be 30-31 kg. The total consumption of glue is influenced by several factors (layer thickness, characteristics, manufacturer), but on average it is 15-40 kg per 1 cubic meter of masonry.
- Scope of work. A preliminary calculation will help you avoid making mistakes when purchasing and sometimes save significant money. Large quantities are usually sold at a significant discount, which will have a positive impact on overall construction costs.
Glue consumption directly depends on the quality of gas silicate blocks. If you use a material with a perfectly flat surface, then 1 cubic meter of masonry will require approximately 20 kg of mixture (with a 2 mm joint thickness). If the blocks have shape defects, then you will have to spend more glue. Experts advise purchasing the mixture with some reserve.
The most common brands of glue
Many domestic and foreign companies produce glue for gas silicate. Depending on the quality of the additives, winter and summer species. Frost-resistant adhesive is recommended for use at low temperatures (from +5 to -10 °C). Packages have standard weight(25 kg), but decorated with a special logo (snowflake).
Experienced craftsmen offer several compositions that have proven themselves well in the construction market.
Glue consumption per 1 m3, kg | Advantages and application features | Cost 25 kg, rubles |
|
Frost resistance | |||
There are winter and summer options | 245 simple and more than 300 - frost-resistant |
||
"Prestige" | It is characterized by high cold resistance, environmental friendliness and speed of preparation. | ||
"Bonolit" | Non-toxic and resistant to frost | ||
"Etalon-Teplit" | Available in simple and frost-resistant versions | ||
Versatility | |||
"Zabudova" | Frost resistance and ease of application | ||
Summer option with excellent water-repellent characteristics |
As you can see, the price of a good gas silicate glue cannot be too low. Attempts to save money threaten future problems with the quality of the masonry.
Preparation of glue
When preparing the mixture for laying gas silicate blocks, several rules should be taken into account:
- The container for diluting glue must be clean, durable and dry. An ordinary plastic bucket may be a good option.
- During the mixing process, the mixture is added to the liquid (in no case vice versa).
- You need to pour the solution in small portions.
- For work, it is better to use a drill with a special attachment (mixer).
The thickness of the finished glue should resemble sour cream. It can be used at any time of the year, but it is better if the temperature is above -15°C.
The glue is prepared in two “passes” with a 5-7 minute interval. For 1 kg of mixture it takes approximately 200 g of water (the exact proportions should be indicated on the packaging). An overdose of liquid threatens to deteriorate the adhesive characteristics. In this case, the consumption of the finished gas silicate glue will be at least 10 kg per 1 m3. Do not dilute too much solution at one time. The resulting glue does not lose its properties for 80-120 minutes (in winter - within half an hour), after which it hardens and becomes unsuitable for installing gas silicate blocks.
Features of block masonry
The work surface needs preliminary preparation. Firstly, it needs to be cleaned of foreign objects and debris, remove any remaining paint, oil, dust and soot. Secondly, it must be strong and dry. If the surface has a glossy appearance, then you should sand it to a matte state. Smooth out irregularities and depressions (you can use already prepared glue).
Work instructions
After preparing the surface, you can begin installing the walls. To apply gas silicate glue, a smooth trowel is used, and for leveling, a notched trowel is used. The mixture must be applied both to the bottom row of masonry and to side part installed block.
Between applying the solution and further work It should take about 20 minutes. The new block must be lightly pressed to the base and hammered with a rubber hammer. The mixture will begin to harden in about 10 minutes, during which time any possible unevenness in the masonry can be corrected. In the warm season, the glue dries in 1-2 days, and reaches its final strength after 3 days.
The air temperature in the room has a significant influence on the speed and quality of hardening. When it gets colder, the setting time for the glue increases; when it gets warmer, it decreases. Too high a temperature may cause shrinkage cracks.
1. When choosing a mixture, it is better to choose options that even a novice mason can handle (for example, Etalon-Teplit glue or SM 999). Expensive solutions require more professionalism.
2. The second and subsequent rows of blocks are “set” on the glue. Installation of the first tier occurs only with cement mortar. This helps smooth out possible unevenness in the foundation and improve the quality of the masonry.
3. The mixture must be applied in a thin layer (2-3 mm). Otherwise, material consumption will increase several times, which will negatively affect both the quality of the seams and the overall construction budget.
At first glance, laying blocks with gas silicate glue is a simple procedure. This is not entirely true: correct use not every craftsman can use an adhesive composition. In this regard, it is advisable that the installation process is carried out only by a qualified mason who can guarantee high quality masonry
In works on exterior decoration buildings are increasingly using blocks based modern materials- gas silicate. They are high quality, reliable, look great and ultimately are not prohibitively expensive. For their fastening, an adhesive composition is used that meets all work and safety standards.
The slabs retain heat well due to their structure, so in order to preserve this property, you need to decide how to choose adhesive for gas silicate blocks, taking into account the fact that a regular solution will not work.
Glue Features
Adhesive composition, intended for the work process with gas silicate blocks, contains Portland cement, quartz sand of the finest structure, mineral additives, and plasticizers.
Thanks to these components, good water and heat retention, low thickness of the adhesive layer (from 2 to 4 mm) and excellent interblock adhesive strength are ensured.
Features of special glue:
· resistance to high temperatures, as well as low and high humidity;
· hardening in a matter of minutes;
· economical: the use of the composition justifies the cost spent several times;
·high strength;
· easy preparation from a semi-finished state.
Compared to compositions made from cement and sand, the layer thickness of the sample under consideration provides an undeniable advantage.
In the first case, it reaches at least 15 mm due to the loss of strength at a lower value. The hygroscopicity of blocks when using special glue does not affect the reliability of fastening even with a thickness of 2 mm.
Main selection criteria
In order not to check the quality of the special adhesive composition for gas blocks already during the work, you should familiarize yourself with the main criteria that every buyer should focus on:
1) The manufacturer must be well-known, recommended by specialists, with well-established technology for the production of formulations.
2) Improper storage of the mixture (humidity or cold) worsens the properties and leads to insufficient strength during masonry.
3) If the price is excessively low, you should think about the likelihood of counterfeiting or inadequate quality;
4) The date of manufacture must correspond to the sale of the goods; otherwise, you cannot count on the desired results.
The packaging details the steps to proper preparation solution, as well as operating conditions and approximate drying time.
It should also be taken into account that in certain situations the addition of antifreeze components is required.
Main manufacturers
When wondering which adhesive to choose for gas silicate blocks, it is worth taking into account the opinions of both amateurs and professionals, given the fact that the range offered on the construction market is very wide.
Domestic and foreign manufacturers increasing every year model series adhesives.
The most important companies include the following:
· "Bonolit" and "Volma";
"Ytong" and "AeroStone";
· "Prestige" and "Glue Zabudov";
"Ceresit" and "Knauf";
"Azolit";
The most expensive and the cheapest
When considering the price category of adhesive mixtures, it is immediately worth noting that you should beware of a very low cost per package.
The reason for this is that a manufacturer will never set a low price for good fastening properties. It is also worth being reasonable about the differences between domestic and imported brands. No doubt many people understand what they are.
Among Russian adhesives there are good options, ranging in total from 130 to 200 rubles. per package of 25 kg. These are “Zabudov’s Glue”, “Prestige” and “TM-17 will win”. They are distinguished by decent performance in terms of ease of application and the absence of harmful impurities.
The most expensive ones include the domestic "Bonolit" and the German brands Ceresit and Knauf. Their price threshold starts from 250 rubles. per bag 25 or 30 kg. They have excellent adhesion, low mixture consumption, and increase the thermal insulation properties of the blocks.
Manufacturers of these brands produce different variants mixtures that differ in weight category and joint thickness.
Winter glue options are the highest in price - AeroStone and Ytong. Application in frost conditions of - 10 degrees Celsius. The cost in this case depends on the quality of the antifreeze additives present in the mixture. It is also worth considering price category winter adhesives higher than summer counterparts. The same applies to the consumption of the substance: per 1 cubic meter. 25 kg are spent.
The most popular among the people
Based on consumer opinion, you can find out which adhesive to choose for gas silicate blocks, with the greatest correspondence between quality and price.
According to statistics market demand The German Ceresit model "CT 21" wins.
The preference of buyers is quite justified: the company claims the quality corresponds to its cost.
The adhesive consists of cement with polymer modifiers, as well as mineral additives. Excellent for outdoor and interior works laying gas silicate blocks. All seams with minimum thickness 2 mm, which increases uniformity.
Type of mixture: paper packaging, weight 25 kg. The glue has a shelf life of one year from the date of manufacture when unopened.
Ceresit CT 21 will cause absolutely no harm: it is an environmentally friendly substance. Evenly and easily applied, resistant to low temperatures, does not lose its properties due to excessive humidity, when using it, “cold bridges” do not arise, and has high adhesion to the material. The numerical value of the mixture consumption is 5 kg per 1 sq.m. Properties last up to 4 hours. Estimated cost – 280 rubles.
The manufacturer guarantees a long service life and no claims from the consumer.
As practice has shown recent years, use of dry building mixtures during most construction and repair work much more profitable than using a conventional solution. So, with the help of adhesive for foam concrete, you can not only complete the masonry much faster and better than before, but also save money. After all, glue consumption is gas silicate blocks several times less than conventional mortar.
The Osnova company offers adhesive for gas silicate blocks own production in a wide range. Usage modern equipment And advanced technologies allows us to produce world-class products that have passed all the necessary tests and have the appropriate certificates.
At the same time, we offer to buy high-quality adhesive for foam concrete, the price of which is noticeably lower than the market average.
Advantages of using glue for gas silicate (aerated concrete) blocks
The use of special adhesive for foam concrete is almost always more profitable than a conventional cement-sand mixture for the following reasons:
- the glue has better adhesion, which increases the strength of the structure;
- it is simple and convenient to work with;
- adhesive for foam concrete is different optimal time grasping;
- has high frost resistance and moisture resistance;
- glue consumption for gas silicate blocks is several times less than cement mortar;
- the glue is resistant to temperature fluctuations and tolerates both high and low temperatures equally well;
- the level of thermal insulation of the building increases.
Calculation of glue consumption for aerated concrete blocks
Before starting work, it is advisable to calculate the amount necessary materials to estimate the approximate cost of construction. Having a house plan, it is easy to determine how many blocks you will need, since their geometric dimensions are well known. But how can you calculate the glue consumption for gas silicate blocks in this case?
In fact, everything here is quite simple. Glue consumption, as a rule, is 15-20 kg per cubic meter of masonry, if the thickness of the adhesive layer is the recommended 2 mm. Therefore, knowing the number of cubic meters of block required for construction, it is not difficult to calculate how much glue for foam concrete you need to purchase.
Gas silicate blocks have become widespread. The motives are clear: low price on the material, high speed of construction of structures, as well as relatively low weight, which in turn makes it possible to abandon deep foundations.
However, gas silicate itself is a porous material, which makes it colder and reduces the thermal efficiency of the building. Heat escapes through many small holes in the block. It is these features that should be taken into account when choosing masonry adhesive.
For gas silicate blocks, glue based on sand, cement, organic and plasticizers is used. mineral origin. The thickness of the seams and glue consumption will depend on the manufacturer and the elements included in the glue.
Composition and properties of adhesive for gas silicate blocks
The composition of the adhesive for gas silicate blocks necessarily includes:
- fine sand;
- binder in the form of high-quality Portland cement;
- modifying inclusions.
Polymer additives provide plasticity and adhesive properties of the solution. Modifying inclusions retain internal moisture, which protects the seams. The solution ensures high adhesion of the blocks, is not absorbed by them and reduces their thermal conductivity.
These properties of the composition are among the main features of gas silicate adhesive.
Which glue is best for gas silicate blocks
- Manufacturer. Well-known suppliers value their reputation and carefully monitor the quality of their products.
- Storage and packaging. Important condition for glue - a dry, ventilated room. If you are not sure exactly how to store the product or the packaging is damaged, it is better to refuse. Also, experts do not recommend taking the dry mixture by weight.
- Advance paynemt. Before purchasing glue for gas silicate blocks, it is recommended to make a preliminary calculation of material consumption, which will allow you to more accurately determine your needs and save money. cash not allowing you to buy too much.
Pros and cons of gas silicate glue
The advantages of adhesive for laying blocks include:
- increased level of adhesion;
- resistance to low temperatures and moisture;
- the adhesive composition does not shrink and also has a high setting speed.
It should also be noted that the products are of interest due to their final budget cost. Although glue solution and costs twice as much as ordinary cement mortar, glue consumption is 4-5 times less (the mortar is applied with a minimum thickness of 2-3 cm).
This also has its advantages:
- increasing the strength of the structure;
- increased thermal insulation;
- Due to the small thickness of the seams, the laying of gas silicate blocks turns out smooth and beautiful.
The disadvantages of gas silicate glue include increased requirements for evenness and the surface being treated.
Where to buy glue for gas silicate blocks
You can buy glue for gas silicate blocks in our online store at a price of 144 rubles per 25 kg bag.
In our store there are different brands and packaging of glue, so you can calculate the required volume and choose the option that is suitable for your purposes.
Gas silicate blocks are a structural and thermal insulation material with a cellular structure. They come from a mixture quartz sand and lime, in addition, with the addition of a small amount of cement. Therefore, adhesive for gas silicate blocks is necessary when constructing walls, as well as any other structures that have a seam thickness of 2 to 10 mm. It is also suitable for leveling vertical or horizontal surfaces.
This glue is a glue-like dry mixture consisting of cement, various additives and fine filler. Additives have water-retaining and plasticizing properties. With their help, strength, frost resistance and moisture resistance are significantly increased. These qualities are very important, since construction is often carried out in unfavorable climatic conditions.
High-quality gas silicate glue has excellent thermal insulation properties, is incredibly durable, has high adhesion and is easy to apply. It can be used to connect not only gas silicate blocks, but other materials made of cellular concrete.
Types and brands
It is divided into two main types - summer and winter.
Winter glue can be used at temperatures from +5 to -10 degrees for interior and exterior work. It contains special antifreeze additives. There is a snowflake on the packaging of this glue.
- Zabudov's glue is the most popular of the frost-resistant mixtures. In addition to their excellent technical characteristics it applies perfectly to any surface and is very easy to use. It costs approximately 115 rubles per 25 kg.
- Prestige and Bonolit. The second one is absolutely non-toxic and environmentally friendly. Price of glue for blocks gas silicate grades Prestige is approximately 140 rubles per 25 kg. Bonolit – 220 rubles.
The most common summer mixture is Insi brand glue. It can be used at temperatures from +10 to +25 degrees for laying walls and various partitions. It is economical, convenient and has excellent water-repellent properties. Price from 185 rubles per 25 kg.
Method of preparation and application
To properly prepare the glue, you will need durable containers; a plastic bucket is ideal. It needs to be poured clean water and then add the dry mixture. The steps must be performed in this order, and not vice versa; you also cannot pour out the entire mixture at once, this should be done gradually. The water needs to be constantly stirred; a drill with a special attachment – a mixer – will help with this.
Glue consumption is approximately 1 kg per 0.20 liter of water. But the consumption of the finished solution per 1 sq. m. is about 10 kg. Do not dilute too much mixture at once, as after 80 minutes it will harden and become unusable. Work with the solution can be carried out at any time of the year, but it is worth considering that the temperature should not be lower than -15 degrees. It should be noted that this instruction not universal, on packages various brands The method of preparation and use is described in detail.
To lay gas silicate products, you will need tools such as a smooth grater or trowel, and for leveling, a spatula.
The consistency of the glue used for gas silicate should resemble sour cream. It is applied using a trowel, carriage or a special bucket with a curved edge. After it is applied, it is immediately leveled with a spatula. After laying the first layer, the surface of the blocks must be leveled with a plane. After just 10 minutes the glue sets, but it dries completely only after 72 hours.
Why is glue better than mortar?
For the first time faced with construction work, many site owners do not understand why builders choose glue for laying gas silicate blocks instead of mortar?
When using the solution you may encounter the following problems:
- Gaps may appear between the blocks;
- moisture will penetrate deep into the wall, and in the future the wall will become overgrown with mold and mildew;
- After the layer has completely dried, the contact between the plates disappears, the strength of the structure is significantly reduced.
Advantages of glue
- applied very thin layers and is economically used;
- contains special components thanks to which the blocks set quickly;
- withstands any temperature changes;
- contains high-quality water-repellent substances that do not allow moisture to penetrate inside the walls.