What glues pva m universal. What can glue and what makes pva glue unique

Polyvinyl acetate adhesive is a white, water-based suspension with a slight, specific odor, perhaps the most common type of adhesive composition. Its popularity lies in its affordable price, versatility, environmental safety and ease of use. The scope of its application is great from gluing paper to fixing wooden bases, tiles, foam and other materials.

Specifications PVA

The main characteristics include:

• Small expense. Depending on the scope of application, the consumption can vary from 100 to 900g. per sq.m.
• High adhesion. Often, water-based PVA glue is not inferior to its alcohol-containing counterparts.
• Fire and explosion safety. But it should be noted that PVA dispersion, on the contrary, is explosive, due to the release of acetic acid and vinyl acetate into the air.
• Frost resistance, more than 4 cycles. However, the dispersion itself is less resistant to frost and loses its adhesive properties when frozen.
• Minimal shrinkage during curing.
• Environmental friendliness, due to the absence of harmful chemicals in the composition.
• moisture resistance

To the technical characteristics, you can also add the low cost of the composition, which means accessibility for consumers. The glue is non-toxic and can be used in many areas, even in children's production and everyday life. Perhaps this is the most versatile and popular glue for a wide range of applications, and most often it can be found in a student's pencil case.

Types of polyvinyl acetate glue

Any polyvinyl acetate adhesive is a homogeneous, viscous mass, white or cream color. Conventionally, it can be divided into household and construction, depending on the composition of the adhesive base, one or another type is used in various fields.

• Household polyvinyl acetate adhesive for paper or various paper-based products (including wallpaper). Frost resistance at t -40 °C, no more than 6 cycles.
• Stationery polyvinyl acetate (PVA-K) for domestic needs and creativity, most often it can be found in a pencil case of a schoolchild or student. Adheres well to paper, cardboard and other paper-based products. It has minimal water resistance and frost resistance, which determines its narrow specialization.

• Universal polyvinyl acetate (PVA-MB) has a wider scope. Frost-resistant and resistant to moisture. They can glue paper, cardboard, leather, fabric, stick them to wooden, glass or metal surfaces. Use in construction, as auxiliary substance is possible. The addition of PVA-MB to the primer or putty increases the adhesive properties of the material. Frost resistance at t -20 °C, no more than 6 cycles.
• Super PVA glue (PVA-M). They can glue all paper bases, porcelain, fabric, leather, wood products (chipboard, MDF), as well as linoleum, parquet, tiles. Application in the construction industry is due to the minimum pressing time, the adhesive sets quickly and guarantees maximum adhesion in a short time. Frost resistance at t -40 °C, no more than 6 cycles.
• PVA dispersion. An aqueous polymer solution stabilized with polyvinyl alcohol has high adhesion. Moderately toxic, with low frost resistance. It is widely used in construction as an additive in mixtures and mortars. The production of packaging, household chemicals, paints, fabrics, shoes also cannot do without the use of dispersion. She can glue wood and thick paper base (photos, cardboard, etc.), fabrics.

Mode of application

The most important point when using PVA is surface preparation:

• Clean the bonding area from contamination, remove all dust, dirt and other debris. The base must be dry.
• Degrease with acetone or other solvent.
• Prepare the area for applying the adhesive. A smooth surface must be sanded or a “concrete-contact” mixture is applied to create interlocking joints, and a rough surface must be sanded.
• Carefully follow the instructions when diluting the mixture. Any deviations will reduce quality and reduce adhesion.
• Use a brush or roller to apply the composition.
• Remove excess adhesive mixture with a dry cloth.
• When connecting wooden structures, observe the pressing time, it is better to leave them under load until completely dry.

If we are talking about paper bases, such as wallpaper, then using it is much easier. The adhesive composition is applied to the paper base, in a thin and uniform layer. If the wallpaper is thin, one application is enough, if the paper is denser, the composition is applied in two layers.

Ease of use and versatility make PVA popular in the domestic and professional sectors. Each type of material has its own type of adhesive, which provides a high degree of adhesion. The types of compositions and methods of application will be discussed in the article.

The main types of PVA glue

Since the scope of PVA is determined by the type of its composition, among the varieties are:

• household (wallpaper);
• clerical (PVA-K);
• universal (PVA-MB);
• Super glue;
• building.

Household adhesive is used for paper and paper based wallpaper. The properties of the composition make it possible to use it for wallpapers that are pasted on plastered walls, concrete or wooden surfaces. The consistency of the composition is a milky white liquid, which may have a beige tint and a slight odor. The composition is non-toxic, so it is safe to use in residential areas. With prolonged use, the adhesive turns yellow. The composition has an expiration date: the adhesive suitable for use is liquid and homogeneous. PVA with an expired shelf life is taken in lumps, which makes it impossible to apply it to the surface. If the glue is expired, then when the composition is squeezed out of the container, a clear liquid will flow first. The seam formed using household PVA withstands temperature drops up to -40 ° Celsius.

PVA superglue contains additives that increase its strength after polymerization. You can use the composition by repairing the surface laid with ceramic tiles. For several peeled-off elements, it makes no sense to prepare a cement composition; it will be replaced by PVA superglue, which can firmly fix the tile on a concrete surface. The substance, like the previous version, can withstand fluctuations up to -40 degrees, so its use is allowed in unheated rooms or on the street.

Scope of use

Household glue is unstable to water, therefore it is not suitable for rooms with a high level of humidity. Emulsions based on PVA are used in the construction industry. Due to the content of polymerizing particles, the level of adhesion with building materials increases. Dispersions are used in the production of packaging and household chemicals. PVA is also used in the production of cigarette filters and paints. The textile and footwear industry also did not do without the use of PVA glue. Where it acts as a fixing or strengthening agent for the fibers.

Compounds with additives that increase moisture resistance are marked with the letter D and a number from 1 to 4. Glue is used for parts made of solid wood or chip materials. It is the optimal solution for furniture that is installed in kitchens or bathrooms. Fiberboard, chipboard or cork are glued together with a substance with moisture resistance D 3. The color of the consistency is transparent with increased viscosity.

Features of universal and construction adhesive

Universal glue is used for combined materials. The composition has enhanced adhesive properties, therefore it is suitable for smooth surfaces. The universal composition is used for:

• cardboard;
• glass;
• paper;
• metal;
• carpet;
• sickles;
• linoleum.

For a high-quality connection, it is better to use a composition marked "MB", PVA-M glue is cheaper and has average characteristics. The temperature threshold for universal adhesives has been increased to -20 degrees.

In construction, PVA is practically not used on its own, but is added to mortars as a plasticizer or enhancer. Indispensable when laying bricks, pouring screed or laying tiles. Construction adhesive has increased frost resistance, therefore it is used for exterior decoration. The amount of plasticizer or enhancer depends on the type of mortar and its volume. For construction work, glue is suitable that is resistant to temperature extremes up to -40 degrees.

Composition of PVA glue

PVA glue is made on a water basis. The components that make up its composition are in suspension, so you need to shake the container with liquid before use. Polyvinyl acetate - 95% of the total volume of the composition. The prefix indicates the polymeric nature of the substance. Five percent of the composition includes solvents, thickeners, plasticizers. The ratio of components depends on the properties that the adhesive must have.

The composition of the glue stationery glue PVA and PVA-M

Stationery PVA glue is similar in composition to PVA glue for domestic use. Stationery adhesive is available in liquid or solid form. The liquid version comes in tubes or plastic bottles for ease of application to paper. The neck is equipped with a dispenser with an adjustable gap. A solid version of stationery PVA is available in pencil format. For ease of moving the pencil on paper, the proportion of glycerin, which gives the adhesive elasticity, is increased in the composition.

Composition and technical characteristics of PVA construction adhesive

PVA construction adhesive is resistant to moisture, therefore, in a five percent share of additives, the content of acetone, which is responsible for this indicator, is increased. For less polymerization time and to give greater strength, crushed glass or porcelain is added.

The advantages of the composition include:

• low consumption;
• high strength index;
• drying speed;
• resistance to UV radiation;
• minimum shrinkage;
• fluidity.

PVA consumption depends on the type of work performed. The minimum indicator is 0.1 kg per 1 m 2, at the maximum value, the consumption reaches 0.9 kg per 1 m 2. After polymerization, the adhesive is able to withstand a peel load of 550 N/m, which is sufficient for furniture products and finishing materials. The temperature of the parts and air, as well as their humidity, affects the rate of polymerization of the adhesive. Restrictions are imposed by the area of ​​the glued surfaces. The average is 12 hours, it can be increased to 24. The adhesive is resistant to sunlight, which is necessary for areas that are near windows or within light range. The adhesive withstands up to six freeze and thaw cycles.

PVA and dry building mixes

Dry mixes that are used in construction consist of three components:

• binder;
• filler;
• chemical additives.

The binder is gypsum, cement or lime. When used independently, the binder component does not have the required strength, therefore, a filler is used in the form of sand, expanded clay, screenings, chalk, gravel and others. Chemical additives are needed to impart frost resistance, elasticity or water repellency. Additives are based on dried PVA powder, which increases the cost of the mixture. It is cheaper to prepare the solution yourself using building glue. Stationery, household and carpentry options for the composition are not suitable, because they contain starch, which prevents Portland cement from curing. For construction purposes, containers up to thirty liters are produced with a shelf life of six months. The composition of the adhesive includes at least 50% polymers.

If necessary, apply construction adhesive to the surface using a roller or a plastic spatula with a fine tooth. A plastic spatula is used when gluing linoleum to a wooden surface. It is necessary to apply glue to the center of the surface or part, after which it is evenly distributed over the treated area. In the absence of a roller, work with a brush is allowed, which complicates the uniform application of PVA.

When using building PVA as a plasticizer for masonry mortar, 5% PVA per mass of binder will be required. In the same ratio, PVA is added to the repair mortars used for old screeds. If a composition is being prepared for pouring the main screed in the premises of the house, then the adhesive content can be increased to 20% of the binder. For tile adhesive, PVA is introduced in an amount of 20% of the total mass of the mixture. For every 10 liters of composition, 50 grams of PVA are added to plaster cement-sand mixtures.

Wood glue

A compound based on polyvinyl acetate is used in carpentry, despite the fact that there are a large number of adhesives released specifically for wood. This is explained by the environmental friendliness of the material, which allows you to work in rooms with poor ventilation without harm to health. The joint based on polyvinyl acetate is resistant to static loads, which is important for furniture products. The price of PVA is lower than that of specialized adhesives.

PVA glue at home

It is not difficult to make the composition in a water bath at home. The first step is preparing a gelatin solution. In one hundred milliliters of water, ten grams of gelatin is diluted for swelling. The resulting solution is placed in a water bath and diluted with water to a liquid state. The solution is brought to a boil and one hundred grams of white flour is gradually added to it. To prevent lumps from appearing, you will need to constantly mix the ingredients, it takes one hour. After the formation of a homogeneous mixture, thirty grams of ethyl alcohol and five grams of glycerin are added to it. Complete mixing will take another thirty minutes in a water bath. You can use glue after cooling. You can clearly see the process in the video below.

Mankind has not yet come up with an adhesive more versatile than PVA. Of course, there are a lot of adhesives, but only PVA has such a wide coverage of all kinds of applications. But what lies behind this name - PVA glue, what technical characteristics and features does it conceal, is it harmful to health?

Polyvinyl acetate - what lies behind this word?

Polyvinyl acetate does not belong to the group of polymers (polyethylene, polystyrene), which are always in the foreground. PVA is content with an inconspicuous, but very important role - we will find it in the composition of paints, between glued furniture boards, on a shiny paper coating, in concrete or plaster. But not every building material of such popularity will have a century-old history - for the first time PVA was obtained back in 1912, and a few years later its production was launched on an industrial scale.

To date, polyvinyl acetate will be found both in the carpenter's workshop and in the student's pencil case. Like over a hundred years ago, this material is affordable, easy to use and non-toxic, so manufacturers are following the logical path - improving the proven polyvinyl acetate and formulations with its use. PVA glue is one of these compounds, what is called a dispersion, or, simply put, a solution of polyvinyl acetate.

PVA glue - composition and technical characteristics

World production of PVA glue exceeds one million tons annually. In its composition, polyvinyl acetate occupies the leading role - 95%, and the remaining 5% remains for all kinds of plasticizers, which give the compositions plasticity and good frost resistance, as well as additives that improve adhesion.

The technical characteristics of PVA universal glue are its low consumption - depending on the type of work, from 100 to 900 grams per square meter. The station wagon dries up within a day, withstands 4 freeze-thaw cycles, is stored, on average, for about six months without changes. The PVA solution is not combustible and non-explosive; when using harmful substances, it does not emit into the air.

PVA glue is suitable for gluing a wide variety of surfaces. However, by adding certain components to classic PVA, manufacturers have mastered special compositions that are effective in various fields of application. For example, they are specially produced for wallpapering, which provides adhesion between a wooden or concrete wall and paper.

Glue labeled "Super" is already applicable on a different scale - with its help, not only wallpaper is glued, but also linoleum, and even facing tiles. "Super" glues porcelain, leather, fabric, provides adhesion to surfaces such as chipboard. The universal adhesive is suitable for gluing different combinations of surfaces, for example, when wood and wall tiles, cardboard and metal, linoleum and concrete are to be joined. Joiner's PVA is used for gluing furniture elements into a single frame. Such a composition is characterized by the fact that when it hardens, it forms a translucent solid layer that tightly adheres wooden surfaces.

For greater strength, the elements lubricated with glue are clamped in a vice for at least several hours, and sometimes for a day.

Construction PVA is a dispersion designed to be added to a wide variety of mortars and formulations. To increase elasticity and durability, it is added to cement and lime mortars, plasters, primers. Sometimes it is used as a primer, but this solution is only suitable for cheap repairs, for example, in a utility room.

A separate type of PVA also includes a homopolymer dispersion, which is distinguished by the highest bonding strength. This dispersion is used in the textile industry, the glass and porcelain industries, in the production of materials intended for repair and construction. Moment, a type of glue that tends to quickly set in air, should also be attributed to a separate category. Most often, this is used when installing laminate or parquet.

PVA is used in the tobacco industry - it is one of the components of the material from which cigarette filters are made. In the textile industry, emulsions with a low concentration of polyvinyl acetate are impregnated with fabrics and linens, which are then used for tailoring - this gives them greater wear resistance, density, and elasticity. On the basis of PVA emulsions, water-repellent mixtures are made, which are also impregnated with fabrics.

PVA has been an element of colorful compositions almost since its invention. PVA-containing paints have high elasticity, wear resistance, well cover surfaces made of stone, concrete, wood, plaster, metal. And in combination with plasticizers, such mixtures form a glossy film with increased tensile strength. Even pencils and corks are made using this glue, and the popular children's toy "smart plasticine" is nothing more than polyvinyl acetate with additives from dyes and sodium tetraborate.

It would seem that working with PVA glue is nowhere easier. The material is non-toxic and harmless to skin and eyes, you will only need protection against accidental splashes. However, there are nuances in any business, and ignorance of them can significantly spoil your life. Most often, problems arise with paper surfaces that need to be glued together, such as wallpaper or pasting photos into a family album. There is a general rule - glue should be applied to a less porous surface, since it absorbs the composition more slowly.

For work you will need (depending on the volume): a roller, brush or foam rubber sponge. If the glue needs to be applied pointwise, and there is no special nozzle on the glue container, or it has become unusable, use a regular syringe (without a needle) or a pipette. After use, they can be rinsed with water and used for other purposes. The adhesive should be applied from the center to the edges - this way you will less smear the inside out with glue. You need to work quickly, because the glue on paper dries faster than on other surfaces.

To expel air bubbles from under the surface, place a sheet of waxed paper on top and smooth with your hand, or with a hard roller, from the center to the edges. If the thickness of the surfaces is different, smooth those that are thinner. For even, strong gluing, materials should always be pressed against each other, and even better - put under a press or clamped in a vise, as is done when gluing wood. Holding the bonded surfaces under pressure will also prevent the materials from deforming.

When gluing paper, a very important factor is the so-called "archival" and acid-free. Ordinary polyvinyl acetate-based glue may turn yellow after a few years - it is unlikely that yellow spots at the gluing points will decorate your family album. There are not so many such compositions among PVA-based adhesives, one of them is wallpaper glue. Of course, you don’t need to glue such photos into an album, there are also acid-free and “archival” glues among stationery glues, although it’s quite difficult to find them.

When gluing, you may encounter such a situation - one of the layers, under the influence of the tension of the second, begins to bend. For example, a thin sheet is soaked and, when dried, shrinks, bending the denser sheet on which it is glued. In this case, the way out is quite simple - glue the same thin sheet on the back of the thick layer, which will serve as a counterweight.

Ease of use and versatility make PVA popular in the domestic and professional sectors. Each type of material has its own type of adhesive, which provides a high degree of adhesion. The types of compositions and methods of application will be discussed in the article.

The main types of PVA glue

Since the scope of PVA is determined by the type of its composition, among the varieties are:

• household (wallpaper);
• clerical (PVA-K);
• universal (PVA-MB);
• Super glue;
• building.

Household adhesive is used for paper and paper based wallpaper. The properties of the composition make it possible to use it for wallpapers that are pasted on plastered walls, concrete or wooden surfaces. The consistency of the composition is a milky white liquid, which may have a beige tint and a slight odor. The composition is non-toxic, so it is safe to use in residential areas. With prolonged use, the adhesive turns yellow. The composition has an expiration date: the adhesive suitable for use is liquid and homogeneous. PVA with an expired shelf life is taken in lumps, which makes it impossible to apply it to the surface. If the glue is expired, then when the composition is squeezed out of the container, a clear liquid will flow first. The seam formed using household PVA withstands temperature drops up to -40 ° Celsius.

PVA superglue contains additives that increase its strength after polymerization. You can use the composition by repairing the surface laid with ceramic tiles. For several peeled-off elements, it makes no sense to prepare a cement composition; it will be replaced by PVA superglue, which can firmly fix the tile on a concrete surface. The substance, like the previous version, can withstand fluctuations up to -40 degrees, so its use is allowed in unheated rooms or on the street.

Scope of use

Household glue is unstable to water, therefore it is not suitable for rooms with a high level of humidity. Emulsions based on PVA are used in the construction industry. Due to the content of polymerizing particles, the level of adhesion with building materials increases. Dispersions are used in the production of packaging and household chemicals. PVA is also used in the production of cigarette filters and paints. The textile and footwear industry also did not do without the use of PVA glue. Where it acts as a fixing or strengthening agent for the fibers.

Compounds with additives that increase moisture resistance are marked with the letter D and a number from 1 to 4. Glue is used for parts made of solid wood or chip materials. It is the optimal solution for furniture that is installed in kitchens or bathrooms. Fiberboard, chipboard or cork are glued together with a substance with moisture resistance D 3. The color of the consistency is transparent with increased viscosity.

Features of universal and construction adhesive

Universal glue is used for combined materials. The composition has enhanced adhesive properties, therefore it is suitable for smooth surfaces. The universal composition is used for:

• cardboard;
• glass;
• paper;
• metal;
• carpet;
• sickles;
• linoleum.

For a high-quality connection, it is better to use a composition marked "MB", PVA-M glue is cheaper and has average characteristics. The temperature threshold for universal adhesives has been increased to -20 degrees.

In construction, PVA is practically not used on its own, but is added to mortars as a plasticizer or enhancer. Indispensable when laying bricks, pouring screed or laying tiles. Construction adhesive has increased frost resistance, therefore it is used for exterior decoration. The amount of plasticizer or enhancer depends on the type of mortar and its volume. For construction work, glue is suitable that is resistant to temperature extremes up to -40 degrees.

Composition of PVA glue

PVA glue is made on a water basis. The components that make up its composition are in suspension, so you need to shake the container with liquid before use. Polyvinyl acetate - 95% of the total volume of the composition. The prefix indicates the polymeric nature of the substance. Five percent of the composition includes solvents, thickeners, plasticizers. The ratio of components depends on the properties that the adhesive must have.

The composition of the glue stationery glue PVA and PVA-M

Stationery PVA glue is similar in composition to PVA glue for domestic use. Stationery adhesive is available in liquid or solid form. The liquid version comes in tubes or plastic bottles for ease of application to paper. The neck is equipped with a dispenser with an adjustable gap. A solid version of stationery PVA is available in pencil format. For ease of moving the pencil on paper, the proportion of glycerin, which gives the adhesive elasticity, is increased in the composition.

Composition and technical characteristics of PVA construction adhesive

PVA construction adhesive is resistant to moisture, therefore, in a five percent share of additives, the content of acetone, which is responsible for this indicator, is increased. For less polymerization time and to give greater strength, crushed glass or porcelain is added.

The advantages of the composition include:

• low consumption;
• high strength index;
• drying speed;
• resistance to UV radiation;
• minimum shrinkage;
• fluidity.

PVA consumption depends on the type of work performed. The minimum indicator is 0.1 kg per 1 m2, at the maximum value, the consumption reaches 0.9 kg per 1 m2. After polymerization, the adhesive is able to withstand a peel load of 550 N/m, which is sufficient for furniture products and finishing materials. The temperature of the parts and air, as well as their humidity, affects the rate of polymerization of the adhesive. Restrictions are imposed by the area of ​​the glued surfaces. The average is 12 hours, it can be increased to 24. The adhesive is resistant to sunlight, which is necessary for areas that are near windows or within light range. The adhesive withstands up to six freeze and thaw cycles.

PVA and dry building mixes

Dry mixes that are used in construction consist of three components:

• binder;
• filler;
• chemical additives.

The binder is gypsum, cement or lime. When used independently, the binder component does not have the required strength, therefore, a filler is used in the form of sand, expanded clay, screenings, chalk, gravel and others. Chemical additives are needed to impart frost resistance, elasticity or water repellency. Additives are based on dried PVA powder, which increases the cost of the mixture. It is cheaper to prepare the solution yourself using building glue. Stationery, household and carpentry options for the composition are not suitable, because they contain starch, which prevents Portland cement from curing. For construction purposes, containers up to thirty liters are produced with a shelf life of six months. The composition of the adhesive includes at least 50% polymers.

If necessary, apply construction adhesive to the surface using a roller or a plastic spatula with a fine tooth. A plastic spatula is used when gluing linoleum to a wooden surface. It is necessary to apply glue to the center of the surface or part, after which it is evenly distributed over the treated area. In the absence of a roller, work with a brush is allowed, which complicates the uniform application of PVA.

When using building PVA as a plasticizer for masonry mortar, 5% PVA per mass of binder will be required. In the same ratio, PVA is added to the repair mortars used for old screeds. If a composition is being prepared for pouring the main screed in the premises of the house, then the adhesive content can be increased to 20% of the binder. For tile adhesive, PVA is introduced in an amount of 20% of the total mass of the mixture. For every 10 liters of composition, 50 grams of PVA are added to plaster cement-sand mixtures.

Wood glue

A compound based on polyvinyl acetate is used in carpentry, despite the fact that there are a large number of adhesives released specifically for wood. This is explained by the environmental friendliness of the material, which allows you to work in rooms with poor ventilation without harm to health. The joint based on polyvinyl acetate is resistant to static loads, which is important for furniture products. The price of PVA is lower than that of specialized adhesives.

PVA glue at home

It is not difficult to make the composition in a water bath at home. The first step is preparing a gelatin solution. In one hundred milliliters of water, ten grams of gelatin is diluted for swelling. The resulting solution is placed in a water bath and diluted with water to a liquid state. The solution is brought to a boil and one hundred grams of white flour is gradually added to it. To prevent lumps from appearing, you will need to constantly mix the ingredients, it takes one hour. After the formation of a homogeneous mixture, thirty grams of ethyl alcohol and five grams of glycerin are added to it. Complete mixing will take another thirty minutes in a water bath. You can use glue after cooling. You can clearly see the process in the video below.

Not a single finishing work is complete without a good adhesive composition. It must meet the requirements of quality, safety and ease of use. PVA construction adhesive is what you need for a variety of indoor repairs: wallpapering, installing parquet, ceramic tiles, etc. What does PVA consist of, what are its advantages and disadvantages, how to use the composition correctly for construction purposes? All answers are later in the article.

Description, composition

PVA glue is one of the most popular compositions for various purposes: construction, office, creativity, household. PVA comes in handy for the first time in childhood, as a rule, this is a clerical option. It is used for paper and cardboard crafts, appliqués, etc. The construction view is somewhat different from the clerical one and has certain advantages. Such a composition holds together a much greater variety of materials and has better adhesion.

Polyvinyl acetate, or PVA for short, is 95% of the adhesive of the same name. The remaining share is occupied by water, plasticizers, various solvents, fillers and thickeners. Stabilizing components give certain properties to the entire composition: water resistance (acetone), plasticity (glycerin), adhesion strength of surfaces (kaolin, chalk, talc), drying speed (glass, porcelain).

Advantages and disadvantages

PVA construction adhesive has good technical characteristics that allow it to be used for various purposes. Strengths of the material:

1. Low consumption. Basically, the amount of glue used depends on the type of work, but the average consumption varies from 100 to 900 g per 1 sq.m.
2. A good indicator of adhesive ability is 450-550 N/m.
3. Dries quickly. On average, the complete curing of the adhesive takes no more than 12-24 hours, although the figure depends on the surface area, temperature and other factors.
4. The composition is resistant to water.
5. Does not break down under the action of sunlight.
6. Frost-resistant, withstands up to 5-6 cycles of freezing and thawing.
7. Dries with minimal shrinkage. Does not deform the product during drying.
8. Fills gaps well.
9. Non-toxic. It is allowed to work with the adhesive in any conditions, it is not necessary to ventilate the room, which is a huge plus for wallpapering. PVA is also safe when it comes into contact with the skin, just wash off the substance with warm water and soap.
10. Affordable price. PVA is the cheapest among analogues.
11. The basis of the adhesive is very stable, while working with different materials, the technical characteristics do not change.
12. A popular product, always on sale in hardware stores.
13. Sold in different capacities and volumes.
14. Storage temperature - up to +50 degrees.
15. It serves as a good basis for building mixtures (primers, fillers).

Advice! Can building PVA replace? The PVA dispersion, although it has much greater adhesion, is quite suitable for wood, paper, cardboard, textiles - suitable for crafts.

The disadvantages of the substance include the following properties:

1. Short shelf life - from 6 months to 1 year. To prolong the composition, various inhibitors are sometimes added.
2. It is a flammable substance, compliance with fire safety regulations is required.
3. If the composition contains plasticizers, then the adhesive can release a small amount of chemicals (acetic acid) into the air.
4. Leaves marks on surfaces, so requires careful work.

How it is applied

PVA glue is preferred by both neophytes and construction professionals. The substance in its pure form glues materials such as paper, cardboard, fabric, leather, porcelain, chipboard, glass, metal well. As an adhesive composition is used for the following repairs:

• installation of ceiling tiles;
• installation of ceramic floor tiles;

The use of PVA also extends to the creation of various mixtures, primarily their compaction:

1. It is added to the cement mortar in order to increase waterproofing, adhesion to the surface, and plasticity of the composition. The standard proportion of PVA glue in the cement mortar is 5-10%.
2. Stucco mortar will benefit from the inclusion of building adhesive. For preparation, cement and sand are mixed in a ratio of 1: 3, then water is added. After obtaining the desired consistency, PVA is introduced into the solution in an amount of 50 to 70 g per 10 liters. Plaster with glue lies better on the surface and sets faster.

Wallpapering on PVA

PVA building glue is suitable for wall decoration with some types of light wallpaper. Everyone who has dealt with repairs agrees that this option is best used only if there is no alternative. Why?

Disadvantages of PVA when installing wallpaper:

• the composition glues the canvas tightly, so that during subsequent repairs it will be difficult and long to tear off the wallpaper;
• for the same reason, it is almost impossible to correct the position of the strip during operation;
• sometimes, over time, yellowness begins to peep out from under the wallpaper.

What construction PVA is ideal for is gluing corners and edges that have come off, including after adjusting the joints.

How to glue wallpaper on PVA:

1. Smooth walls must be covered with putty, rough walls with a primer.
2. Glue must be diluted with water to enhance fluidity.
3. The composition is applied to walls or wallpaper with a roller or notched trowel. It is quite inconvenient to work with a brush, especially on surfaces with a large area.
4. Movements go from the center to the edge of the wallpaper.
5. If bubbles form during gluing, they are carefully leveled with a dry, clean cloth or roller. It is even better to use a piece of paper: this way the bubbles will come out faster and new ones will not form.
6. If glue gets on the front side of the wallpaper, you must immediately remove it with a slightly damp cloth or use anti-glue.

Construction PVA glue is maximally revealed from the best sides only if certain rules are observed:

1. Glue is applied only on a surface previously cleaned of dust and dirt. It is also recommended to degrease it.
2. The surface must be dry before applying the adhesive.
3. It is recommended to spread the glue on only one surface, as applying it to both glued parts will only reduce the effectiveness of the glue.
4. Usually the packaging indicates whether the material needs to be diluted and in what proportions. Construction glue in its pure form is rarely used, mainly for gluing some types of wallpaper.
5. Thickness of the put layer - no more than 2 mm.
6. Before use, it is recommended to mix the diluted adhesive thoroughly.
7. Work with the composition is carried out at a temperature not lower than +10 degrees and relative humidity not higher than 80%.
8. For gluing, it is usually advised to firmly press the surfaces and hold them for about 2-3 minutes. In fact, for the best result, it is necessary to fix objects with less force, but longer in time.
9. It is not necessary to disturb the fastened surfaces during drying.

Glue based on polyvinyl acetate successfully performs its tasks. First of all, it is indispensable for mixing putty and cement compaction. Its composition is constantly being improved, thanks to its excellent technical characteristics, ease of use, availability and environmental friendliness, PVA construction adhesive leads the construction market.