Adhesive for foam blocks: types and composition, calculation of consumption, features of selection and application

Selecting the appropriate adhesive is essential when working with foam blocks to guarantee a sturdy and long-lasting construction. Foam blocks are widely used because they are simple to use and have good insulation, but how well they are bonded depends greatly on the adhesive. This post will discuss the different kinds of foam block adhesives that are available, their ingredients, and how to determine how much you’ll need for your project.

Foam block adhesives are available in various forms, each with special qualities designed to meet particular requirements. While some have longer working times, others are made for quick settings. Choosing the ideal adhesive for your specific project is made easier when you are aware of your options. We’ll dissect the prevalent varieties and clarify why each is appropriate for a particular use case.

Getting the adhesive amount just right is another crucial step in using foam blocks. Excessive or insufficient use can impact the overall cost and stability of your construction. To make sure you get the exact amount, we’ll offer simple techniques for estimating adhesive requirements based on block size and project scope.

We’ll finally get into the things you need to think about when selecting an adhesive. This covers suitability for foam blocks, the surrounding environment, and application methods. With this information at your disposal, you’ll be ready to decide wisely and complete your construction projects with the greatest outcomes.

Types and composition

The operating conditions must be considered when selecting an adhesive mixture. This results in the materials being split into two groups:

In the first scenario, temperatures between +5 and +30 °C are suitable for using foam concrete assembly adhesive.

In this instance, the mixture keeps its qualities and can be used for a long time without losing its effectiveness. Making large quantities of this kind of adhesive is not advised.

The composition starts to solidify after one to two hours, indicating a high drying rate. The mixture cannot be used if its consistency changes because… in that scenario, adequate high-quality adhesion cannot be guaranteed. White cement is the recommended material to use when preparing summer glue.

The purpose of winter mixtures is to be used in harsher weather; the substance can be applied at any temperature between +5 and -10°C. As a result, you can install foam blocks in the winter without worrying about the materials’ quality of adhesion declining.

Therefore, the mixture will start to solidify in thirty minutes, making it unusable for block laying. The glue is made with hot water. It has anti-freeze ingredients as well.

Whether using winter or summer glue, you must pay attention to the component ratio. The properties of the final mixture may deteriorate as a result of material quantity changes.

The following ingredients are present in the glue:

• fine-grained quartz sand allows you to create thin seams – up to 3 mm thick;
• Portland cement allows you to get a strong connection, and the composition hardens quickly;
• plasticizers or polymer additives are used to increase the plasticity of the finished mass, as a result it fills the gaps better, which helps to improve the quality of the masonry, since. . the mixture covers the entire surface of the block, including small irregularities;
• special components that help retain moisture, due to this the service life of the finished structure increases, since. . the risk of cracks is reduced.

The correct adhesive must be chosen when working with foam blocks to ensure a sturdy and long-lasting construction. The many kinds of adhesives that are available, their chemical makeup, and how to determine how much you’ll need are all covered in this article. We’ll also go over important aspects to take into account when choosing and using these adhesives, so your project is completed quickly and effectively.

Consumption calculation of glue for foam blocks

The quantity of material needed for masonry must be determined before any work is done. In this instance, it is important to consider the following variables that may have an impact on the amount of glue used for foam blocks:

• use of an unsuitable tool, in this case, when gripping, the amount of glue increases or it is unevenly distributed over the surface of the sides;
• products of the correct shape are used for masonry, if there are significant defects, the consumption of glue increases;
• qualification of the master;
• weather conditions: when mixing the solution and applying it in unsuitable conditions, its properties change, which can cause an increase in consumption.

When determining how much material to use for laying foam blocks on glue, keep in mind the standard indicators that the manufacturer considers when defining the mixture’s consumption:

• layer thickness – 1 mm;
• surface area – 1 m²;
• no defects on the surface of the blocks.

With these indicators, 1.5–1.6 kg of glue will be consumed per square meter. Also considered are the expenses per 1 m3. Using standard indicators, the mixture’s consumption comes to 25 kg. The blocks’ dimensions are considered in this instance. To illustrate, using products 20 × 30 × 60 or 40 × 30 × 60 will result in a 25–30 kg adhesive consumption. In certain cases, there are 1.5 packages of dry mix instead of 1 material per 1 m³. Air temperature has an impact on usage as well.

If the weather is warm, one package (weighing 25 kg) of dry mix is used for every square meter. The air temperature in this instance fluctuates between +5 and +25°C.

Which glue is better for foam blocks

Although there is a wide variety of mixtures available in the construction industry, you can make the process of selecting easier by considering the following advice:

• low price often means low quality, but the most expensive mixtures do not always live up to expectations;
• you should consider materials from reliable manufacturers;
• calculation of a sufficient amount of dry mixture is done with a reserve: experts advise buying 1 package more;
• when choosing, take into account weather conditions, time of year: if the work is planned to be carried out in winter, you need to consider only frost-resistant glue as options.

Volma

This type works well for laying foam, gas, and silicate blocks. A package weighing 25 kg typically costs 177 rubles. You can use this composition both inside and outside.

Its main advantage is a relatively low consumption (1.4 kg per 1 m²). The position of the blocks must be quickly adjusted – no more than 10 minutes are allocated for this.

This particular brand of glue can be used to make 2 to 5 mm thick seams. The following ratios are considered when mixing the dry mixture: 1 kg for this material and 0.21-0.23 l for water. 5 MPa is the bending strength. The suggested temperature range is +5 to +30 °C. F35 is the frost resistance index. At a temperature of +15 °C, the final solution keeps its properties for 90 minutes.

Titan foam adhesive

Produced in the form of an aerosol (can) Volume – 870 ml. Average price – 480 rubles. This variety is intended for laying gas and foam blocks. This is a polyurethane-based glue. Characterized by high adhesion, serves for a long time. The advantage is the absence of waste, since. . the mixture is applied with a construction gun in an amount sufficient for fastening the blocks. The glue can be used at low temperatures.

The surface must be ready before using Titan polyurethane adhesive. Adhesion will diminish otherwise. The can needs to be kept warm in order to be used with this mixture; it can be placed in a heated room for a day or submerged in warm water for a period of time. Next, give the can a few shakes. It must be installed in the gun before it can be opened. A thin layer of cement mortar shields the foam layer from the elements.

Knauf

This kind of mixture is useful for laying various kinds of blocks, including foam blocks. The price is 160 rubles on average. pf packing weighing 25 kg. Polymer additives in this composition give the material a stronger structure. The low consumption per 18 kg is a benefit. No more than 0.2 liters of water are needed to prepare the mixture with 1 kilogram of dry material.

It is recommended to use a float, rule, trowel to work with the adhesive. The compressive strength of the material is 2.5 MPa. This type of mixture is used to create seams of significant thickness – up to 12 mm.

Index of frost resistance: 25 cycles. It is possible to use this kind of adhesive at temperatures higher than +5 °C.

Ivsil Block (Ivsil block)

This kind of material is versatile and can be used to attach foam blocks as well as other types of blocks. A 25 kg package costs, on average, 215 rubles. The composition consists of fine-grained sand, polymer, and water-retaining additives. Both indoor and outdoor use are appropriate for this material. A 2 mm thick seam can be made with it.

This lowers the possibility of the structure freezing through the joints. Low material consumption is also a benefit. Furthermore, compared to other types of solutions, you can work with the final mixture for up to four hours.

Tile adhesive

It is acceptable to buy tile adhesive that can tolerate exposure to low temperatures if you were unable to locate the best mixture for work in difficult circumstances (in the cold). But only if the blocks are sufficiently even can this option be used. A deviation in height of no more than 1.5 mm is allowed. For masonry, foam blocks with a maximum length of 100 mm are advised. If you have prior experience working on construction projects, you should install such products using tile adhesive.

Mortar for laying foam blocks

The use of cement mixtures is permitted. Either prepare the material yourself or purchase it already made. Portland cement and sand have a 4:1 ratio. The properties of the resultant mixture can be enhanced. Plasticizers and slaked lime are used for this. Lime is used to enhance the material’s capacity for thermal insulation. To create foam, resin is occasionally added. Still, it’s thought that this is the cause of the joint’s declining strength.

Selecting the appropriate adhesive for foam blocks is essential to guaranteeing a sturdy and long-lasting build. There are various types of adhesives available, such as premixed adhesives and thin-bed mortars, so it’s important to choose the one that best suits the requirements of your project. Whether it is for bonding requirements, ease of application, or quick setting times, each type has a unique set of benefits.

Making an informed decision can be aided by knowing the makeup of these adhesives. Certain adhesives, for example, are made to be extremely flexible in order to accommodate even the smallest structural movements, while other adhesives have outstanding bonding strength. It is imperative to take into account various factors, including the intended use of the blocks and any particular load-bearing specifications.

An additional crucial component of your project is figuring out how much adhesive is needed. You won’t waste extra material or run out of adhesive halfway through if your measurements are accurate. The majority of manufacturers offer guidelines regarding coverage rates; therefore, verifying these specifics will help you keep expenses under control and work more efficiently.

In order to achieve a stable and dependable construction, the adhesive must be applied correctly. Pay special attention to the surface preparation and curing times, and strictly adhere to the manufacturer’s instructions. By doing this, you’ll improve the construction’s general quality and durability and make sure your foam block project endures.

Video on the topic

Laying on foam glue. Features of the calculation. Live broadcast No. 9

Laying aerated concrete on foam glue

ADHESIVE FOR AERATED CONCRETE. SELECTION AND AREAS OF APPLICATION

We check the strength of the foam adhesive.

Consumption of foam adhesive for the construction of a house from aerated concrete