Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

The use of natural stone for finishing the facades of buildings for various purposes is a fashionable trend among numerous developers, and architects also recommend this option for decorating houses. New technology allows to have modern insulated facade walls in retro style. In addition, in terms of its physical properties of strength, natural stone is rightfully considered one of the most durable materials.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Natural stone glue for outdoor use

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Facade decoration with natural stone

The decoration of external walls is operated in the most unfavorable conditions under the constant influence of atmospheric precipitation, with a cyclical change of positive and negative temperatures. Such conditions require increased attention during the selection of the glue; it must not only have a high coefficient of adhesion to building materials, but also not change its original properties during the entire period of operation.

Professionals do not recommend using universal compositions; in terms of moisture resistance and frost resistance, they cannot fully satisfy construction requirements. This is especially true of the northern regions of our country, where the most difficult operating conditions are, not all trains can withstand them.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

It is important to choose the right adhesive composition for the stone

When choosing a specific brand, special attention is paid to the manufacturing country, the northern countries, in contrast from southern ones, they take into account the frost resistance factor to the maximum extent and produce adapted adhesives. At present, domestic companies have mastered the technology for the production of high-quality compounds; in many respects, they are almost not inferior to imported analogues. Unfortunately, it cannot be said that the cost of domestic products is much lower than imported ones.

In the absence of healthy competition, some of them unreasonably overcharge their goods.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Stone glue must be frost-resistant

Types of natural stone glue for outdoor use

Depending on the main component, adhesives are divided into two large groups.

  1. Cement-based . For production can be used gray or white cement grades M400-M600. For the price, they are the cheapest, in terms of physical indicators they meet the requirements of building codes and regulations.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Cement-based adhesive

  2. Based on epoxy resin and polyurethane. Two-component adhesives have the highest performance characteristics. The cost significantly exceeds the cement counterparts. Requires extra care during preparation and use. One of the important advantages is plasticity.

    The adhesive compensates for changes in the linear dimensions of natural stones due to thermal expansion. Strength increases significantly, microcracks do not appear, the growth of mosses and lichens is inhibited in the seams.Due to the high cost, epoxy adhesives are most often used only for grouting or during the repair of a fallen stone. Can be used for finishing fountains, outdoor pools, decorative elements of the facade, etc.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Two-component stone glue

General advice when choosing an adhesive for outdoor use

  1. Natural stone is heavy, for strong adhesion, the compounds must have high adhesion.

  2. The parameters of thermal expansion of the stone and the base may differ significantly, the adhesive must compensate for changes in linear dimensions.
  3. The composition should not lose its properties under the influence of moisture and low temperatures. Remember that the renovation of facades is a difficult and time-consuming undertaking, in some cases it will be necessary to install scaffolding. It is much more profitable to prevent the occurrence of unpleasant situations than to eliminate them later.
  4. Natural stone can have both smooth and uneven edges.

    Laying the second requires much more time to fit individual elements in size and configuration. Quite often, natural stones have to be cut or chipped, and this is an additional waste of time. In connection with such features of finishing with natural stones, the time of using the glue takes an important place. The larger it is, the quieter the work is. Remember that after the start of the polymerization of two-component adhesives, this process cannot be stopped; unused expensive glue will have to be thrown away.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Decorating the facade of the house with stone

Recommended values ​​for glue

We will focus only on the most important criteria, we accept the average option in terms of quality and price. Make a specific decision yourself, taking into account the characteristics and measurements of natural stone, the place of its installation, the material for making the facade walls and the climatic zone of residence.

  1. Time of use. The best option - the glue is suitable for use for about three hours. During this time, it is possible to lay the stone on a relatively large area - labor productivity increases, the estimated cost of finishing work decreases.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    The time for using the ready-made solution is limited

  2. The maximum retained weight per square meter of stone is within 70-80 kg. This indicator allows the use of rather large and thick natural stones for facades. The recommended stone weight depends on the adhesion and strength of the adhesive.
  3. Frost resistance. If the adhesive withstands less than 35 freeze / thaw cycles, then you should not purchase it.

    The fact is that 35 cycles does not mean 35 years, during one winter or year the temperature can change several times from plus to minus and vice versa.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Choose an adhesive with a frost resistance index of at least 35 cycles

Carefully read the manufacturer's instructions, choose products only tested by numerous consumers companies. Never buy counterfeit products, do not be seduced by a low price. The cost of unavoidable facade repairs is several orders of magnitude higher than the amount of savings.

Prices for Ceresit building glue

Ceresit glue

How to glue cracked natural stone

Such problems arise due to the inattention of the master or violation of the rules for transporting materials.

It is a pity to throw away the stove, but it is impossible to install a stone with broken corners. You can try to glue parts of the stone separately on an ordinary composition. If you have extensive experience in performing such work, then you can count on a positive result. If not, then it's best not to try.

Today, there are special, particularly strong and fast-drying adhesives for the repair of stone slabs in the implementation.

They are made on a polyester base and set in just a few minutes. One of the best quality brands is Bellinzoni MASTICE 2000.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Bellinzoni MASTICE 2000

The most used brands of glue for natural stone for outdoor use

Name Brief description of operational characteristics Approximate cost of a bag weighing 25 kg (rub.)

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Knauf Flizen plus (36)

For natural and artificial stone, can be used for interior and exterior wall cladding. It is allowed to work only at positive temperatures.

Cement-based, has high adhesion rates.

240

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Knauf Flisen (100)

For gluing thin-walled stone tiles with dimensions of 30 * 30 cm or more. 245

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

GLIMS-WhiteFix

For pasting facade walls and plinths with natural stone tiles, waterproof, frost-resistant. High adhesion rates make it possible to lay tiles from top to bottom - the work of the tiler is accelerated. Suitable for sealing joints.

255

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Ceresit CM14 Extra

But based on cement, withstands a large weight of finishing materials. 260

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Professional Quick Stone

Indicators of adhesion to concrete not less than 0.5 MPa, frost resistance 75 cycles, can be operated in the range from -50 ° C to + 70 ° C. Per square meter of surface, depending on its condition, 5-15 kg of ready-made glue is required. 247

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

131 EXTRABOND

Increased adhesion with concrete up to 1.

5 MPa allows the use of glue when facing facade walls with heavy natural stones up to 2000 cm2. Frost resistance 50 cycles.Classification of the adhesive according to EN 12004 - C2TE. Once prepared, it can be used within four hours.

310

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

LITOKOL LITOELASTIC A + B

Two-component for natural stone cladding on horizontal and vertical surfaces.

Consists of epoxy-polyurethane resins, organic additives and inert fillers. An organic base with fibers is used as a catalyst. Very expensive and high quality glue, used only for decoration of the most prestigious buildings. It can be used for finishing facade walls made of any materials, including metal surfaces.

3274 rub.

/
5 kg

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

UNIS GRANIT

Withstands natural stone of large mass, it is used for finishing entrance groups, fences, facades and plinths. Can be used on brick and concrete bearing surfaces. 370

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

KNAUF MRAMOR

Special for marble, has high adhesion to concrete and brick, can support slab weight up to 40 kg / m2. 375

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

LITOKOL X11

For outdoor and interior work, withstands at least 40 freeze / thaw cycles. Consumption depending on the condition of the surfaces up to 5 kg / m2.

325

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

GLIMS®GREYFIX

Material manufacturing of front walls - brick, concrete.
Made on the basis of cement, water and frost resistant.
Allows you to correct the spatial position of
tiles 20 minutes after gluing
225

If possible, purchase adhesives with high levels of thixotropy - the ability to hold the tile in a vertical position without displacement. This quality greatly facilitates the process of wall cladding with natural stone, minimizes the risks of technological errors during the production of work.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Thixotropy

List of well-known companies

Currently there are a large number of manufacturers but not all of them live up to consumer confidence.

Unfortunately, even the high price of a product does not guarantee its quality. Which brands can you trust?

  1. Keralastic T . It produces two-component adhesives with improved performance indicators, at cost it belongs to the expensive category. It has high values ​​of adhesion, retains elasticity, does not crack during long-term use. The material can be used as additional waterproofing - water does not get on the front walls, dampness in the premises is excluded.

    Recommended for use on surfaces with risks of seasonal deformation.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Polyurethane adhesive for tiles and stones Keralastic T

  2. Keraflex . Dry mix based on cement.To improve performance, synthetic resins and special innovative additives are added. Has minimal shrinkage, withstands low temperatures, does not react to direct contact with water.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Keraflex

  3. Eunice . A wide range of adhesive mixtures is produced under this brand. The basis is cement and sand; special additives are added to increase frost resistance. It can be used for finishing buildings operated in difficult climatic conditions.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Yunice

  4. Creps Plus .

    A dry mix of high quality cement, sifted river sand and modified additives. It is diluted with water and has high frost resistance. It can be used for laying natural stone both outdoors and indoors.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Kreps Plus

    Prices for glue different types of glue Kreps

    Glue Kreps

  5. Elastorapid . Quite a new brand, but has already managed to win positive reviews from consumers.

    It can be used in regions with long and cold winters, the presence of a small amount of synthetic resins gives the adhesive elasticity - the thermal linear expansion of natural stone is compensated.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Elastorapid

Our list is far from complete, before making the final choice, consult the seller-consultant.

How the type of stone influences the choice of glue

The dependence of the glue on the type of stone is essential, this must be taken into account when choosing a particular brand. Which glue is best for which stone?

Name of the stone Brief characteristics of the stone Recommended glue

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Granite

One of the heaviest stones used for exterior work. It is expensive, the stone is hard to work with, it often crumbles during cutting.

Only the most experienced craftsmen can cover facade mills with granite.

Two-component adhesives with high adhesion values. For horizontal surfaces, it is allowed to use cement-based compounds.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Marble

Has different colors and patterns, significantly inferior in strength granite. There are significant limestone inclusions.

Two-component cement-based adhesives and formulations with the obligatory presence of innovative additives.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Sandstone

The stone has average indicators in all parameters, is widely used for finishing facades of a budget option. Dry mixes based on cement of a cheap cost spectrum.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Quartz slate

A common stone, used not only for facades, but also for finishing design elements of the adjacent territory. Cement mixes of the middle price category.

The stone is characterized by excellent technological performance; there is no need to use expensive adhesives.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Limestone

Has a low weight and density. Disadvantage - it crumbles quickly, absorbs a large amount of moisture. Dry mixes with increased strength and adhesion. During finishing, the building rules must be followed exactly.

Prices for various types of glue Basin Maxiplix

Glue Basin Maxiplix

Professional advice on the use of glue for natural stone

The reliability of surface finishing with natural stone depends on several components: the quality of surface and stone preparation, the type of glue and adherence to the recommended technology. What rules are recommended to follow?

  1. If there is less than six months left until the expiration of the warranty period, then it is better not to buy such glue. Pay attention to storage conditions, do not purchase material in the markets. The glue must be stored in covered rooms, the best option is in heated rooms.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    The glue in the package can be stored in a place protected from moisture for 6 months

  2. Dry mixtures should be poured into a container with water, and not vice versa.

    It is best to use an electric mixer for mixing. If not, then when stirring with a trowel, reduce the volume of single portions. Stirring must be done in two stages, after the first one, let the glue infuse for 5-6 minutes and stir again. This will minimize the amount of dry lumps.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Glue preparation steps

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Kneading glue

  3. Read the instructions for use carefully and follow them exactly.

  4. If the glue is slightly cured, do not add water immediately. Stir vigorously at first, this will make it a little thinner. Remember that water in dry mixes is needed for the chemical reactions of cement, its excessive amount significantly reduces the characteristics of the glue.

    Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

    Stir the glue if it starts to harden

Natural stone is one of the most expensive finishing materials. Any defect during the production of work leads to significant material losses, do not allow them.

Be sure to prime the surfaces.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Apply primer

The primer performs several tasks simultaneously:

  • binds the smallest particles of surfaces and eliminates their loss;
  • increases the waterproofing of surfaces;
  • increases the adhesion of the glue.

Due to impregnation, it is possible to increase the reliability of fixation of heavy slabs made of natural stone.

Prices for front primer

Front primer

Clean the surfaces of walls and stones from dirt and dust. If the stones are very dirty, it is recommended to wash them.

Before gluing, run your hand over the stone and wall, if sand remains on your hand, then you need to continue preparing the surfaces.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Cleaning the walls of the house

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Preparing stones

Dilute as much glue as you can use within two to three hours. Reduce the first portion in volume, in the future the amount of glue will be determined empirically.

The finishing stone is very heavy, take every precaution for a secure adhesion. The adhesive must be in contact with the entire surface of the stone and the bearing wall.

If during the laying of ceramic tiles the surfaces may have gaps, then in the case of a stone this is not allowed. Apply the adhesive to the wall only with a comb trowel and at least twice in perpendicular directions.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Applying the solution to the wall

If the work is carried out in hot dry weather, it is recommended to wet the back of the stones. Use brushes or a spray bottle. By the way, about thirty years ago, the craftsmen planted natural stone on an ordinary cement-sand mortar, and it still holds.

To increase the adhesion strength, they dipped each tile into a container with water, due to this they achieved the strength of the connection of the solution with the stone.

Pay particular attention to gluing seams. For tiles, grout performs only a decorative function, and for stones, it also increases the reliability of adhesion. Glue between the tiles of natural stone is not applied after laying the entire area, but during the course of work for each element separately.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Apply glue to the edges of stones with glue

On all already laid tiles, apply glue along the edges of the joint with a thin spatula.

Give glue with a margin, a new tile should squeeze out its remnants, they will be removed later. This technology guarantees reliable adhesion of the adhesive to uneven edges of the tile, and the strength of the fixation is noticeably increased.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Bonding stone

For marble, buy only special glue, universal use is not recommended. This natural stone requires a special attitude, the glue is quite expensive for it. But saving is not recommended, the stone is much more expensive than glue.

For finishing facades with natural stone, it makes no sense to perfectly level the surfaces. Why? First, the more irregularities, the larger the contact area of ​​the glue with the surface, and this increases the strength of the stone fixation. Of course, everything must be done within reasonable limits. Secondly, natural stone has, in most cases, uneven front surfaces, which does not allow controlling their position using slats. This means that the thickness of the glue should be greater than when laying ordinary ceramic tiles or artificial stone.

The position of the individual tiles is monitored by eye, they have to be strongly pressed while turning from left to right. The thicker the layer of glue, the easier it is to control the position of the stone and the more firmly it adheres.

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Installation of natural stone

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

Decorating the base with stone

Adhesive for natural stone for outdoor use: rules for choosing and working with mixtures

After the installation is completed, apply a water repellent

The vast majority of facing works with natural stone can be done with cement-based glue, do not rush to buy expensive two-component compounds , they are needed only in exceptional cases. Remember that the quality of adhesion depends only and not so much on the material as on your skill.

As practice shows, during the facing of external surfaces with natural stone, it is never possible to keep within the consumption rates promised by the manufacturer.

Always buy glue with a small margin, it is much more profitable than interrupting work and re-shopping at the store.

Construction mixer price

Construction mixer

Video - Using glue for natural stone

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