Application of assembly adhesive for mineral wool boards

Application of assembly adhesive for mineral wool boards Application of assembly adhesive for mineral wool boards

Thermal insulation of a private house for this the moment is not a difficult task - there are many types of modern heat-insulating materials on the construction market, as well as adhesives for gluing them.

Most often, mineral wool is used in the form of slabs - it will have a large number of advantages (we are talking about environmental friendliness to low cost).

Adhesive composition for mineral wool must be perfectly suitable for the main heat-insulating material, and still not violate its vapor permeability and take into account the possibility of vibration, as well as the movement of structures of the supporting type.

The main criteria and requirements for the adhesive composition

As a rule, insulation of the surface of a private house from the outside will be more cost effective and much more convenient. For this reason, when selecting an adhesive composition for mineral wool, one should take into account the possibility of its application specifically for facade (that is, external) work.

Before buying glue, you should carefully read all the steps of the instructions and make sure that it will meet the following requirements:

  1. Plasticity. The higher-quality modifying additives and plasticizers are in the composition of the product, the less the risk of cracks and destruction of the glue seam will be.
  2. Excellent coefficient of adhesion. The adhesive composition must reliably adhere to the surface of the mineral wool, and also from the main wall - made of stone, brick or wood.
  3. Permeability to air - if the glue does not have such properties, condensation will begin to accumulate inside, and as a result, the microclimate in the room will deteriorate.

  4. Resistance to frost - since the glue for mineral slabs is used outside, and in winter, they must withstand freezing and further thawing perfectly without reducing the level of strength. Even on sale you can find cold-resistant adhesives that can be applied at temperatures below +10 degrees (they are needed if the insulation is not carried out in the summer).
  5. Ideal curing speed - quick drying of the product will mean less labor intensity and less time to implement.
  6. Sufficient vitality of the solution - the higher this indicator, the easier it will be to work, because it will be possible to prepare large portions of glue.
  7. Possibility to apply glue of any thickness - with uneven walls, certain areas will need to be covered with a thicker layer, and for the rest, 0.

    5 cm of glue is enough. It should not have restrictions on this indicator, and the consumption of a good product will not exceed 6 kg per square meter.

As a rule, insulation adhesives are made on the basis of polyurethane / cement in combination with quartz, and also about a component of synthetic origin. Despite the differences in composition, all funds will have the properties indicated above, although they have many differences.

Details

Varieties and properties of formulations for gluing

Adhesives can be special and also universal purpose.

The first ones are suitable only for mineral wool based on basalt, glass wool, and the rest will be required for a large number of popular heaters - foam, polystyrene, and also reinforcing mesh. In terms of structure and appearance, the compositions are dry, liquid and even in cans.

Mixtures in bags (dry)

Mixes of the construction type for gluing mineral wool are sold in dense paper bags with a volume of 5 to 25 kg. The composition contains cement, synthetic resins, quartz sand, plasticizers and other additives to improve the degree of adhesion. Before use, the composition should be diluted with water, and the result is a solution with the consistency of a paste.

The tool is especially suitable when the walls in the house are uneven, and everything should be leveled before using them, because thick layers of glue will smooth out defects. Before you are considering buying glue for mineral slabs, you should make sure that the building mixture is suitable specifically for outdoor work and has excellent frost resistance.

The main properties of the composition are as follows:

Consider another type of adhesive type compositions.

Solutions in containers (liquid)

Such solutions are usually sold ready-made, and it is very convenient to use them, because it takes time to dilute no adhesive is required.

But after opening the package, adhesives have a limited period of use, and therefore it is worth buying glue in cans of small displacement. If there are other disadvantages - the high cost of liquid compositions, and also unsuitable for smooth substrates. It turns out that the compounds should be used on wood surfaces or brickwork.

Polyurethane-type adhesives

Adhesives or foams based on urethane resins will be sold in the form of cans, for their use only a package with a dispenser will be enough or you will need to buy a glue construction gun. Polyurethane-based formulations are considered universal formulations, because there is a high level of adhesion to all substrates and insulation.

Here are the advantages of such formulations:

  • Ease of use, no need for dilution, and the presence of complex devices.
  • Great reduction in work time.
  • Providing an additional layer of thermal insulation.
  • Ability to perform work under all kinds of conditions, even with high humidity levels, and even at low temperatures.
  • No harmful additives.

  • Resistant to moisture, excellent vapor permeability.
  • Long service life without loss of basic properties.

How to use the glue correctly?

Using glue for mineral wool boards

Before starting work, it is worth preparing the base, and on it neither in no case should there be serious damage, and all large cracks and pits should be repaired. It is also important to clean the walls of fats, dirt, irregularities as much as possible, although this is not always possible. Strong contamination can only make the adhesion of the composition and the base worse, and therefore it is worth rinsing them off with clean water under pressure.

Substrates that absorb strongly should be primed 1-2 times with special primers for outdoor work. Before attaching the mineral wool, make sure that the base is 100% dry.

The adhesion level of the adhesive can be checked even earlier as follows:

  • Take a small piece of insulation.
  • Glue to wall surface.
  • After three days, try to tear it off - if the cotton wool is detached clearly along the lines of application of the adhesive, then the adhesion will be sufficient.

Please note that these types of slabs must be properly prepared before starting work. From them it is necessary to grind all the irregularities that are larger than 0.2 cm in size. For this, use sandpaper or a sander.

Glue for fixing mineral boards in dry form is diluted according to the manufacturer's instructions.

The powder should be added to the water, and not vice versa, since otherwise the glue will go in lumps. After that, the glue should be mixed with a construction mixer, and it will be ready for use. When using glue, polyurethane glue will be enough to shake the can and insert it into a special gun.

The order of execution is as follows:

  1. First, it is worth applying glue to the surface of the base, and then glue a reinforcing mesh or other material for strengthening (this stage is optional).
  2. Foam adhesives should be applied around the entire perimeter of the cotton wool in strips with a width of 2 to 5 cm, and also strictly in the center in the voids every 3 dm.

  3. The mortar should be applied using tapes 10 cm wide.
  4. Apply the mineral board to the finished substrate, press down firmly with cotton wool, iron, tap to remove air.
  5. The distance between the plates should be no more than 0.2 cm, and large gaps should be additionally shed with foam.
  6. Dowels are often used for good fastening, but they can be used only three days after applying a layer of glue.

Next, it's worth considering the best lineups.

Overview of adhesives

You can find various compositions for attaching a mineral plate on sale, and almost all modern manufacturers of adhesives and mixtures produce them for construction. The best ones are described below.

Adhesive composition for mineral wool EK Te rm ex

Such a tool can be used to equip thermal insulation systems, and is also suitable for indoor and outdoor work. It is excellent for fastening mineral slabs, reinforcing thermal mesh, expanded polystyrene based on brick and concrete.

The adhesive composition is frost-resistant, plastic, and also has an excellent level of adhesion.

Its main characteristics:

  • The color of the medium is gray.
  • The main component is cement.
  • The pot life of the solution is 3 hours.
  • Consumption of funds approximately 6 kg per square.

  • The layer thickness can be from 0. 4 to 0. 9 cm.
  • The temperature during operation should be from +6 to +31 degrees.
  • Clutches 1 MPa.

  • Resistance to frost is 75 cycles.
  • Temperature of use is allowed from -55 to +75 degrees.

Let's consider one more tool.

Adhesive composition Cerisite CT-180

Adhesive for mineral wool boards in dry form Cerisite CT-180 is made on the basis of cement, modifiers, polymer fillers type, used for attaching a layer of mineral wool insulation outside the house. The product can be applied at temperatures higher than zero degrees, and it has a high level of adhesion to multiple substrates (0.

8 MPa) and is resistant to tearing. The excellent vapor permeability will ensure efficient, stable removal of the vapor that is always generated when the liquid evaporates.

Other properties and parameters of the composition:

  • Application of assembly adhesive for mineral wool boards Consumption of funds approx. 6 kg per square.
  • Environmentally friendly.

  • The dry density of the mixture is 1. 4 per square decimeter.
  • The density of the mixture in ready-made form is 1. 6 kg per square decimeter.
  • The norm of water for 50 kg will be from 10 to 11.

    5 liters.

  • The life stability of the solution is 2 hours.
  • Open time is 20 minutes.
  • Frost resistance can be 100 cycles.
  • Operating temperature from -55 to +75 degrees.

  • The color of the finished adhesive layer is yellowish-gray.

And one more tool.

Adhesive composition ST-190

Such a product is perfect for basalt-type insulation, for example, cotton wool of the "Izovola" type. The main area of ‚Äč‚Äčapplication will relate to external gluing of boards, but internal use is also likely. The glue is produced in summer and winter versions, which allows it to be used in all seasons.

Cerisite is suitable for gluing plates with your own hands, as well as for gluing in combination with a reinforcing fiberglass mesh.Advantages:

  • Long term of use (up to several tens of years).
  • Excellent adhesion to subfloors and mineral wool.
  • The presence of fibers for reinforcement.
  • High impact resistance.

  • Resistance to moisture and atmospheric factors.
  • Eco-friendly type safety.
  • Elasticity.
  • Vapor permeability.

Like other adhesives, this product is sold in 25 kg bags.

All adhesives, when used correctly, help quickly and do not require special skills to attach thermal insulation. mineral wool is a high-quality and inexpensive option for house insulation, and in combination with excellent glue, it will serve for many years.

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