Facade decorative plaster is used both on interior and external works, is applied to a prepared base that has a reinforcing layer. Facade decorative plaster gives the facade of the building a finished look. It is resistant to atmospheric influences, has high crack resistance and impact resistance.
Cement thin-layer plaster HAGAst Außenputz Fs-415 white
PURPOSE
Plastering walls and finishing facades of buildings and structures.
Leveling ceilings and walls in wet areas (including the walls of swimming pools).
Cosmetic repair of damaged concrete or plastered bases.
Bases: brick, concrete, cement or gypsum plaster.
PREPARATION OF THE BASE FOR PLASTERING WORKS
The substrate must be dry, strong, solid and not subject to shrinkage or deformation. Dirt, dust, stains from petroleum products, oils and fats of various origins, peeling plaster or other coatings with poor adhesion to the base are removed. Protruding pieces mortar, concrete or other irregularities are removed. Before applying cement plaster, gypsum-containing and highly porous substrates are treated with a primer.
PREPARATION OF PLASTER MIXTURE
5.0-6.0 liters are poured into the container clean water(t 15-20°C). Pour out 2/3 of the bag of dry mixture, mix, pour out the remaining amount of the mixture and mix again until a homogeneous consistency is formed. Plaster mortar mixture is mixed mechanically using an electric drill with an attachment (at 400 - 600 rpm). The resulting mixture facade plaster stand for 2-3 minutes, then mix again. At 20°C, the prepared mortar mixture of cement facade plaster retains a working consistency for at least 4 hours.
APPLYING THE PLASTER MIXTURE
The plaster mixture is applied to the wall using a metal spatula and a trowel. Plaster applied to the wall, metal rule aligned with beacons. The permissible thickness of the plaster layer in one working pass is 5-30 mm. Applying the next layer of plaster is allowed only after the previous layer of plaster has completely dried. After the plaster solution begins to dry, it is carefully sanded sandpaper or other abrasive material.
Note: Temperature environment during plastering work it should be in the range from +5°C to +35°C. During drying, the plaster must be protected from exposure high temperatures and direct sunlight. If on the basis there are expansion joints, then when applying plaster it is also necessary to make expansion joints, repeating their geometry and then filling them with polyurethane sealant.
CLEANING THE INSTRUMENT
Hands, tools and containers are cleaned with warm water immediately after using the plaster mixture.
PACKAGING AND SHELF LIFE
Cement thin-layer plaster HAGAst Außenputz Fs 415 is supplied in three-layer paper bags with a polyethylene liner of 25 kg.
Technical characteristics of the plaster mixture HAGAst Außenputz Fs 415:
Application temperature range, ° C - from +5 to +35
Humidity of the dry mixture, %, no more than - 0.1
Maximum aggregate fraction, mm - 0.63
Water consumption for mixing, l/kg - 0.22 - 0.2 4
Consumption mortar mixture: kg/sq.m per 1mm layer thickness - 1.5
Open time, min - 20
Life time, h, at 0 ° C not less than - 3
Compressive strength after 28 days, MPa, not less than - 12
Adhesion after 28 days, not less than 0.7
Frost resistance, cycles, not less than 50
Our company can offer you vehicles of various carrying capacities, which allows you to choose the loading option you need.
- Delivery of materials in Moscow and Moscow region, when ordering a minimum quantity:
- Delivery of materials to other regions of Russia (with the exception of Moscow and the Moscow region), when ordering a minimum quantity:
- Delivery of materials to the CIS countries, when ordering a minimum quantity:
Maximum delivery rate in Moscow
| № | Load capacity (tons) | Volume (cub.m) | Cost, rub.) |
| 1 | up to 1.5 | 7-10 | 2 000 |
| 2 | 1,5 | 7-10 | 3 000 |
| 3 | 3 | 15-17 | 4 000 |
| 4 | 5 | 15-20 | 7 000 |
| 5 | 10 | 30-40 | 8 000 |
| 6 | 20 | 75-96 | 10 000 |
Maximum delivery rate outside the Moscow Ring Road in the Moscow region
| № | Load capacity (tons) | Volume (cub.m.) | Cost per 1 km (RUB) |
| 1 | up to 1.5 | 7-10 | 28 |
| 2 | 1,5 | 7-10 | 30 |
| 3 | 3 | 15-17 | 32 |
| 4 | 5 | 15-20 | 35 |
| 5 | 10 | 30-40 | 40 |
| 6 | 20 | 75-96 | 50 |
Additionally:
Entry into the TTR - 1500 rubles. for the car.
Entry into the Garden Ring - 2500 rubles. for the car.
We can offer you the option of delivery by manipulator. The load capacity of the manipulator is 15 tons. Using a manipulator significantly simplifies the unloading of products at your facility, helps eliminate the search for unloading equipment, and also significantly saves on unloading.
The price of unloading 1 pallet is 250 rubles.
Delivery of regional orders is carried out until transport company chosen by the Customer within the city of Moscow or the Moscow region at the above rates, or by transport of our partners in agreement with your manager to a facility in your region.
Transport companies we work with to deliver materials across Russia:
- Business Line
- PEC
Delivery of orders to the CIS countries is carried out to a transport company chosen by the Customer within Moscow or the Moscow region at the above rates, or by transport from our partners in agreement with your manager to a facility in your region.
When delivering to the CIS countries, we produce the necessary customs clearance, which is prepared by our partner LLC "Corporation VED-CENTER"
The success of each shipment depends on proper planning, so for each cargo we select the most suitable transport, the optimal route and delivery cost.
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A special feature of thin-layer plaster is that it is applied directly onto surfaces of concrete or brick with a thickness of no more than 10 mm. It is carried out together with the laying of walls almost simultaneously. The structure of the material is a grout that is applied to the walls as they are erected.
Features of thin-layer plaster
To apply such a solution, an important condition is the accuracy of the masonry. The material has great performance. When applied, the thin-layer solution dries quickly, adheres firmly to the surface and hardens. The result is a beautiful, neat finish. The advantages of this material include ease of work and low cost of the composition.
The solution of modern thin-layer plaster should have increased plasticity. It can be applied manually or using a mortar pump. Surfaces are rubbed with traditional trowels.
Despite the thin layer, this material is reliable and resistant to precipitation, frost, and sunlight. Work with plaster can be done even in winter time. In addition to its decorative nature, the material also has protective qualities. They improve the thermal insulation of external walls.
With this type of finishing you can create smooth or textured surfaces. There are varieties of thin-layer (covering) with different textures - rough, scratched. The grooves are created with graters after applying the mixture. Blends are available in many colors and textures.
Thanks to your positive properties Thin-layer plaster has gained popularity in exterior construction work. This finishing guarantees a spectacular look to the façade.
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Dry mixtures and ready-made solutions for external plaster
Is facade plaster necessary?
Plastering the outside walls of a house performs several tasks:
- Decorates the house, makes the walls attractive appearance. The plaster layer levels the surface of the walls, hides defects (cracks, stains) and serves as a basis for facade paint. Plaster can have a smooth or textured surface.
- Facade plaster protects the wall and insulation located underneath it from the destructive effects of atmospheric phenomena - rain, snow and sun.
- While protecting the wall from rain, the plaster should not interfere with the removal (evaporation) of construction and operational moisture from the wall.
- A layer of plaster increases the strength of the wall surface, thereby protecting the wall from mechanical damage.
- Plaster increases heat-saving properties outer wall by reducing its thermal conductivity and air permeability (blowability).
- Dense plaster layer increases the sound insulation of rooms from street noise.
To perform the above tasks, plaster compositions must have certain properties.
Builders who apply the plaster composition to the wall have their own requirements for the solution. The plaster mortar must have good adhesion to the base, be easy and convenient to apply and rub in, have optimal time setting and drying.
It is important for the home developer that the plaster successfully performs its tasks for a long time and, at the same time, the price and consumption of the plaster mixture do not greatly burden the construction budget.
Methods for preparing plaster mortar
Plaster mortars on a construction site are prepared in three ways:
- The components, which are purchased separately on the construction market, are loaded into the concrete mixer.
- Water is poured into the concrete mixer and the ready-made dry mixture of the necessary components is loaded from bags.
- They use ready-made plaster mortar, which is sold in buckets.
The first two methods are usually used for the preparation of traditional mineral cement-lime and cement plaster mortars.
Modern plaster mortars with an organic binder are usually purchased ready-made, in buckets.
Properties and parameters by which façade plaster is selected
The main properties and parameters by which façade plaster is selected are usually indicated in the information on the packaging:
Type of plaster- or the composition of the main components, for example, cement, cement-lime, thin-layer acrylic, etc.
Application- for what walls, bases and conditions the plaster is intended, for example, facade plaster for brick walls or for interior work.
Amount in a package- the weight of the dry mixture in the bag, the weight or volume of the finished solution in the bucket.
Consumption of dry mixture or solution- indicated in kg/m 2 / per layer thickness of 1 mm. or at 1 cm. Using this parameter, you can calculate the number of packages that will need to be purchased for plastering the facade.
Application temperature— temperature and humidity ranges of outdoor air within which the storage and use of a dry mixture or solution is allowed.
Compressive strength— indicates the compressive strength of the hardened layer of plaster on the wall, unit of measurement — N/mm 2
Adhesion— adhesion strength of the plaster layer to the base. Unit - N/mm 2(the higher the better)
Vapor permeability- coefficient of resistance to diffusion of water vapor, denoted by the letter m(mu). The lower this indicator, the greater the vapor permeability of the plaster layer.
Plaster layer thickness— the minimum and maximum thickness is indicated for a separate layer or for the entire coating as a whole.
Depending on the type of plaster, the packaging also indicates other properties and conditions of use that are important for this type. More detailed information about the characteristics of the plaster composition can be obtained on the manufacturer’s website.
When choosing plaster, you must ensure that two mandatory rules:
- Strength plaster layer there shouldn't be more than at the base on which the plaster is applied. Plaster cannot be applied to a weaker base.
- Vapor permeability facade plaster should always be higher than at the base.
This also applies to the case when the base is a lower layer of another plaster.
The need to fulfill these conditions is one of the reasons that, for example, walls made of bricks and concrete blocks, walls made of cellular concrete, as well as walls with insulation have to be plastered with different compounds.
Traditional cement-lime and cement plasters for walls made of bricks and concrete blocks
The main components of the cement mortar are: lime plaster- this is cement, lime and sand. Cement plaster mortar contains only cement and sand. These are traditional plasters that have been used in construction since ancient times.
A traditional plaster mortar of good quality for a reasonable price can actually be prepared only from factory-made dry mixtures. At the factory, in addition to the main components, various additives are added to dry mixtures that improve the properties of the solution and the finished coating on the wall.
Ready-made factory-made dry mixtures, in addition to the main components, also contain additives that:
- retain water in the fresh plaster layer, preventing water from transferring into the wall material;
- increase the adhesion of plaster to the base;
- increase plasticity and workability;
- adjust setting time;
- prevent the appearance of efflorescence on the surface;
- increase the strength and crack resistance of the plaster layer.
At a construction site, at self-cooking mortars made from individual components, as a rule, do without these additives and produce lower-quality plaster.
In addition, the factory dry plaster mixture produces a solution that is more homogeneous in composition and properties. During production homemade solution from individual components, each batch in a concrete mixer will differ in composition and properties. Every time you load it into a concrete mixer, builders will not measure out the components “like in a pharmacy.” In addition, the purchased materials for preparing the solution may not be of adequate quality.
Ready-made compositions of dry mixtures are also distinguished by the method of applying the solution to the wall — manual method or machine. Plaster solutions for the machine method are applied to the wall using a special unit.
Plaster compositions for machines are of higher quality, contain more additives, and are easier to apply to the wall. They are more expensive than hand-made mixtures.
Machine-made plasters are also well suited for manual application, but not vice versa.
Traditional plasters take a long time to dry, within one to two weeks for each centimeter of thickness. Only after this period can they be painted with façade paint.
Cement-lime plaster used for finishing bases made of mineral materials— walls made of brick or cement-based concrete blocks, as well as coatings made of cement-bonded particle boards, asbestos-cement or fiber-cement slabs.
The thickness of the plaster layer is usually 1 - 3 cm, dry mixture consumption is 11-16 kg/m 2 /cm., color gray or white.
Cement-lime mortars are applied to the base sequentially in three layers:
- Splash- bottom layer 3 - 5 mm thick. A solution of liquid consistency is poured or rubbed into the base, which ensures better adhesion of the plaster to the surface.
- Priming- layer plaster mortar thickness 10 - 20 mm. Levels the wall surface and ensures the strength of the plaster layer.
- Covering- finishing layer 3 - 8 mm thick. rubbed with a grater. Finally levels the plaster layer and prepares the surface for painting.
Ready-made dry mixtures are available for sale, specifically designed for preparing a solution for spraying, as well as liquid solutions and primers for treating surfaces before plastering in order to increase the adhesion of the plaster layer. Such compositions are recommended must be applied to surfaces with low adhesion, for example, on concrete walls and cement slabs.
Primer Betonkontakt imparts roughness to surfaces to increase the adhesion of the plaster layer to smooth, weakly absorbent concrete substrates.
Primer Deep penetration increases the adhesion of all types of absorbent substrates: cement-sand plasters, cellular concrete, etc.
The walls, treated to increase adhesion with ready-made solutions, are plastered without spraying - the primer is immediately applied, and then the coating.
To install the finishing layer - covering, you can use ready-made fine-grained cement - lime mixtures , which allow you to get a smoother surface of the plaster.
On sale you can find ready-made solutions and dry mixtures that allow you to perform cement-lime plaster quickly, in one layer at once.
Properties, differences and features of cement-lime plaster:
- Resistant to moisture (but to a lesser extent than cement plasters).
- They are quite flexible, easy to use, easy to apply and rub over.
- Vapor permeable.
- Durable, resistant to mechanical stress.
- Relatively cheap.
Cement (cement-sand) plaster - properties and features
A solution for cement plaster is prepared from a dry mixture or by mixing the main components - cement, sand and water.
Ready dry mix Cement crack-resistant plaster for leveling the surface for decorative finishing.
Cement-sand plaster has the following properties:
- High resistance to moisture.
- Good mechanical strength.
- Low water vapor permeability.
- Plastering cement mortar less plastic, more difficult to apply and rub in, sets faster compared to cement-lime composition.
- The hardened layer shrinks and for this reason cracks.
- Cement plaster mixture the cheapest.
The scope of application of cement plaster is determined by its characteristics.
Cement plaster is usually used to level foundation walls and plinths, which are always in conditions of high humidity.
Cement plaster is applied to indoor walls in order to reduce vapor permeability, for example, when, as well as for finishing walls in wet rooms.
Cement plaster is applied to the wall in two layers - spray and primer. The thickness of each layer is the same as for cement-lime plaster. A layer of cement plaster serves as the base on which it is applied vertical waterproofing foundation.
Consumption of dry mixture of cement plaster 16 - 18 kg/m 2 /cm. The total thickness of the cement plaster layer on the wall is 6 - 20 mm, color gray.
When finishing the facade with traditional cement-lime or cement plaster, for the finishing layer - covering, often used modern compositions thin-layer facade plaster or putty. This solution allows you to obtain a beautiful, textured and colored decorative surface.
Ready dry mix Cement facade putty for final leveling of the surface.
Lightweight facade plaster for walls made of aerated concrete, gas silicate, foam concrete
Light facade plaster differs from traditional cement plaster in that quartz sand in the solution is replaced, completely or partially, with a lighter filler, for example, perlite sand in the Weber Vetonit TTT dry mix. Due to this, the plaster layer has high vapor permeability, is light in weight and lightly loads the base on which it is applied.
Light plaster also somewhat improves the heat-saving properties of walls. The thermal conductivity coefficient of the plaster layer is 0.25 - 0.32 W/m* o K. For comparison, a layer of ordinary cement-lime plaster has a thermal conductivity coefficient of about 0.8 W/m* o K.
Due to its properties, light mineral plaster is well suited for plastering surfaces made of aerated concrete, gas silicate, foam concrete or walls over old plaster.
Light plaster is less resistant to mechanical damage and moisture. Therefore, it is not used for finishing the walls of the basement and basement.
Light plaster is purchased in the form of ready-made dry mixtures. Apply to the wall in the same way as a traditional solution, in three layers - spray, primer and cover. The total thickness of the plaster layer of light plaster is up to 4 cm.
Watch the technology for applying light facade plaster in this video tutorial:
When applying, take into account the following Features of light mineral plaster:
- Has high vapor permeability.
- Increases the resistance to heat transfer of the wall, but to a lesser extent than heat-saving plaster.
- It is applied to the wall in a thicker layer than thin-layer plaster, which allows you to hide significant unevenness in the walls.
- Less resistant to mechanical stress than traditional compounds.
- More resistant to shrinkage cracks.
- They are easier to apply to the wall than heat-saving plaster.
Thin-layer facade plasters for insulation
Thin-layer facade plasters used for finishing external walls on top of a layer of insulation. This method of insulating and finishing external walls is usually called a “bonded thermal insulation system”.
Thin-layer plasters are lightweight and place less load on the base they are applied to than others.
The thin-layer plaster solution contains calibrated filler grains. Plaster of one name usually has several composition options, which differ in grain size (caliber). The solutions use grains with a caliber of 1 - 6 mm. The caliber of grain in the solution determines the thickness of the plaster layer. The grain size is indicated on the plaster packaging.
Thin-layer plasters are suitable for finishing other surfaces, both outside and inside. They create a light but wear-resistant protective and decorative layer on the surface.
Thin-layer plaster is often applied over less decorative plaster - cement-lime, cement or heat-saving.
Plaster solutions contain various additives that color the plaster and give it antiseptic properties - preventing the appearance of mold and green algae.
Thin-layer plasters dry quickly. After 2 - 3 days, their surface can already be painted.
Thin-layer mineral plaster
The binder in thin-layer mineral plaster is white cement. Plaster composition sold in bags, in the form of a dry mixture.
The plaster mixture may contain microfiber fibers, which increase the strength of the coating, as well as hydrophobic additives, which increase the moisture resistance of the plaster.
Mineral plaster is the cheapest thin-layer plaster. The average solution consumption is 1.5 - 4.5 kg/m2.
Thin-layer mineral plaster has the following features:
- Less elastic (prone to cracking) compared to plaster with an organic binder.
- Creates a vapor-permeable coating.
- It gets dirty easily and is more difficult to clean compared to other thin-layer plasters.
- A poorer color palette for painting.
Thin layer acrylic plaster
The binder in acrylic plaster is acrylic resin. The plaster composition is sold as a ready-made solution in buckets. Simply mix the mixture in the bucket and it is ready to be applied to the wall.
The solution contains pigments and mineral fillers of a certain size - caliber in the range of 0.5 - 6 mm.
Consumption of ready-made acrylic plaster solution - 1.5 - 4 kg/m2.
There are acrylic and silicone plaster solutions on sale. The plaster layer from such a solution is more vapor permeable.
The plastered surface may not be smooth, but have a relief (texture), for example, it looks like finely laid pebbles.
Acrylic plasters have the following advantages and disadvantages:
- They have good elasticity - less risk of cracks.
- The coating is resistant to mechanical stress.
- Paints well with rich, long-lasting colors.
- In conditions of prolonged moisture they easily become overgrown with mold and algae.
- They do not allow water vapor to pass through well.
Silicate plaster
Silicate plasters, also called silicon plasters, contain liquid potassium glass as a base. Ready-made plaster mortar is sold in buckets.
It should be borne in mind that the silicate solution has an alkaline reaction, that is, it can corrode your hands. Plastering work with such a solution is carried out in protective gloves and glasses.
The consumption of silicate plaster is 2 - 4 kg/m2.
Silicate plasters have the following features:
- Create a coating resistant to mechanical damage.
- They have a rich color palette.
- Easy to clean from dirt.
- Resistant to mold, fungi and algae.
- Difficult to apply to the wall; experience is required to obtain a uniform, smooth surface.
- The liquid solution, due to its alkaline reaction, poses a danger to humans.
There are also silicate plaster solutions with the addition of silicone resin - polysilicate (polysilicon) plasters. Polysilicate plasters are more elastic, UV resistant, easier to apply to the wall and safer to use. But they have lower resistance to mold and algae.
Silicone thin layer plaster
The main binder in silicone plasters is silicone resin. Silicone plaster has all the advantages of mineral and acrylic plasters.
The consumption of silicone plaster solution is 1.7 - 2.4 kg/m2. The composition is sold as a ready-made solution in buckets.
Silicone plasters are characterized by the following properties:
- Create a layer resistant to mechanical damage.
- They allow water vapor to pass through well.
- The surface is easy to clean from dirt.
- Easy and convenient to apply to the wall.
- They have a very rich range of colors.
How to choose thin-layer plaster
Summary table of properties comparison different types thin layer plasters:
| Property of plaster | Mineral | Acrylic | Silicone | Silicate |
| Porosity | **** | *** | ** | **** |
| Vapor permeability | **** | * | *** | *** |
| Elasticity | — | *** | ** | * |
| Mechanical strength | * | *** | * | * |
| Resistant to dust contamination | ** | * | *** | ** |
| Resistant to mold and algae | ** | * | *** | ** |
| Resistance to chemical air pollutants | * | **** | *** | ** |
| UV resistance | *** | * | ** | *** |
| Color fastness | * | *** | ** | * |
| Resistant to efflorescence and stains when dried | — | *** | *** | * |
| Easy to apply to the wall | ** | *** | *** | * |
When choosing plaster, as mentioned above, Be sure to take into account the vapor permeability indicator. The vapor permeability of the plaster layer should be higher than that of the base.
For plastering on mineral wool insulation boards choose plaster with high vapor permeability. The table shows that mineral, silicone and silicate plasters have good vapor permeability. It is impossible to finish a façade insulated with mineral wool with acrylic plaster.
For plastering over insulation made from foam boards or extruded polystyrene foam plasters with low vapor permeability can be used. Any thin-layer plaster is suitable for such a façade in terms of vapor permeability.
If thin-layer plaster is applied to smooth walls from neatly folded blocks made of aerated concrete, gas silicate, then it is necessary to use a composition with high vapor permeability.
Thin-layer plaster is often applied as the top finishing layer for finishing mineral plaster surfaces. In this version, for application, for example, on vapor-permeable light mineral plaster it is also necessary to use thin-layer plaster with high vapor permeability.
Thin-layer plaster with a high strength index should not be applied to less durable substrates.
When choosing thin-layer plaster, other properties are also taken into account. But this choice is not so critical. For example, a house near a road with heavy traffic is better to be plastered with a dirt-resistant compound with an easy-to-clean surface, for example, silicone plaster.
Or a house on the shore of a reservoir or with a facade heavily shaded by trees can be advantageously finished with plaster that is resistant to mold and algae.
But you can choose other types of plaster. Only then will it be necessary to take additional measures to protect the facade from dust or mold.
Heat-saving plaster for facade
Heat-saving plaster is a cement or cement-lime plaster in which, instead of quartz sand, perlite sand or foam granules are used as a filler. Perlite is a volcanic porous rock, like pumice.
Thanks to thermal insulation properties filler, the plaster layer has a low thermal conductivity coefficient in the range 0.07 - 0.15 W/m* o K. For comparison, a layer of ordinary cement-lime plaster has a thermal conductivity coefficient of about 0.8 W/m* o K, and for insulation made from mineral wool slabs this coefficient is about 0.055 W/m* o K.
For the heat saving effect to be noticeable, the thickness of the plaster layer must be significant, up to 10 cm. A solution of heat-saving plaster is applied in layers of 2 - 4 cm in several passes.
It is necessary to ensure good adhesion of such a thick heat-saving plaster layer to the base of the wall. To do this, a bottom layer is applied to the wall - spray, and reinforced with a fiberglass mesh.
Fiberglass mesh 5x5 mm. It is used to strengthen the plaster layer, protect the applied mixture from delamination and cracking, and prevent deformation of the finish. Its installation significantly reduces the influence of mechanical, humidity and temperature influences. Increases the quality of adhesion of solutions to bases.
The layer of heat-saving plaster has low resistance to mechanical damage. Finishing with such plaster is not recommended for basement walls and other places that are subject to mechanical stress. Or it is necessary to provide additional protection for such places.
To increase decorativeness and resistance to external influences, it is recommended to apply thin-layer plaster over heat-saving plaster.
The average consumption of heat-saving plaster mortar is 11 kg/m 2 /cm. To dry, heat-saving plaster needs to be left for about one week for each centimeter of thickness. After which, the facade can be painted.
When using, the following should be taken into account: Features of facade heat-saving plaster:
- Less resistance to mechanical stress.
- Good permeability to water vapor.
- A thick plaster layer allows you to level very uneven walls.
- The surface of the plaster layer is not decorative enough and often requires additional finishing.
Facade plaster in your city
Facade plaster for exterior use.
The plaster is beautiful, well-maintained and colorful
Do I need to paint the facade?
Facade paint must be used on walls finished with any mineral plaster - traditional, light, heat-saving, thin-layer.
It is also recommended to paint walls covered with thin-layer plasters. A facade finished with acrylic thin-layer plaster does not need to be painted if the solution was tinted to the desired color before application. The color of the thin-layer plaster solution should be chosen as close as possible to the color of the façade paint.
Painting the plaster makes the color of the facade uniform and more saturated. A layer of facade paint additionally protects the wall from external influences and also makes it easier to clean the walls from dirt.
It is not recommended to paint the facade in a saturated color dark color. This especially applies to walls with thin-layer plaster over insulation. Dark facades they heat up more strongly in the sun, and this causes additional stress in the plaster layer. The plaster on such a facade may crack and peel off from the base.
Information on the correct choice of the type of facade paint, as well as what color to paint the facade and how to paint the facade yourself with your own hands, read other articles on this topic.
In order for the wall to have an attractive decorative look, the surface of the plaster is often given a relief texture.
For plastering on mineral based, with the help of the most different instruments: a spatula, trowel, trowel, brushes, brooms, boards with nails, etc., apply one or another relief on the surface of the plaster that has not yet hardened.
Using templates or stamps, an elongated relief can be formed on the surface of unhardened plaster: imitation of seams, rustications (parallel grooves), as well as geometric figures, or any other decor.
To apply relief decor, the thickness of the mineral plaster layer must be at least 1 - 1.5 cm.
The surface of thin-layer plaster is decorated in a different way. The composition of the solution at the factory includes special additives that allow it to form on the surface decorative texture, for example - bark beetle, lamb, fur coat, pebble, shagreen or smooth.
Decorative plasters contain various granular fillers with a diameter of 1 to 4 mm: marble chips, quartz sand, glass chips, mica, which gives the coating an expressive structure.
The texture is determined not only by the size of the grain (crumbs), but also by the technique of applying the composition.
So, for example, a “fur coat” is a lumpy, heterogeneous surface, a “lamb” is smaller “lumps” formed during rubbing with a roller, trowel, whisk or twisted rag.
The effect of grooves eaten into wood by bark beetles is achieved by circular, horizontal or vertical rubbing of plaster containing small pebbles - it is these that create shallow, picturesque grooves.
“Scratches” occur when grouting plaster containing fine gravel; it “crawls away” from the surface, revealing a homogeneous mosaic of densely packed grains of deeper layers.
Thin-layer plasters are more decorative, have a varied surface texture, rich and saturated color scheme- examples in the figure. For this reason, they are often used as a topcoat for less decorative mineral plaster.
There is little theoretical knowledge to perform plastering work. To obtain high-quality coverage great importance has long practice and skill as a performer. To make the façade of the house look decent I highly recommend entrusting this work to specialists with good recommendations.
Start plastering the walls no earlier than 2 - 3 months after the roof of the house has been erected. The walls will shrink during this time.
Plaster the facade after finishing the plastering work inside the house.
Ideal weather for device external plaster- temperature within plus 5 - 25 o C, air humidity no more than 75%. In hot weather, freshly applied plaster on the wall is protected from the sun, and mineral plaster is also sprayed with water. Otherwise, the plaster layer may crack.
Before applying the plaster mortar, it is very useful to coat the wall surface with a primer. It is better to choose a primer recommended by the manufacturer of the ready-made solution or dry mixture. This information is usually found on the packaging or on the manufacturer's website. The primer improves the adhesion of the plaster layer to the base, reduces the risk of cracks and peeling of the plaster from the base. Don't skimp on primer - you could lose more.
On smooth and primed walls plaster can be applied in two layers, as shown in this master class video.
Plastering external walls made of aerated concrete, gas silicate from the inside of the room.
From the right choice plaster for the facade and careful application depends on how long the coating will perform its tasks, protecting the house from the negative effects of dirt and strong solar radiation. External thin-layer plasters are popular among home builders. From year to year, manufacturers offer an increasing range of products ranging from acrylic plasters, silicate and silicone, to hybrid ones.
Thin-layer plasters in our assortment include:
However, the product itself, even best quality, That's not all. Skills, knowledge and experience are also important, because sometimes one simple mistake can cause the protective layer to begin to crack or fall off, and stains, efflorescence or mushrooms to appear on the façade.Leave the work to professionals. However, before hiring a construction crew, it will be useful to have at least a basic knowledge of thin-layer plasters.
Before they begin plastering work on a construction site, let's see what mistakes can be avoided.
Incorrect selection of plaster
Despite the offer of all types of plasters, they differ in properties and purpose. If the house insulation system was made on the basis of polystyrene foam, then we can use various plasters - acrylic or silicone. In the case where the insulation was done using mineral wool, it is recommended to use silicate plaster, they have best parameters removal of moisture from the insulation. For houses near forests, parks, and ponds, silicate or silicate-silicone plaster is recommended. If the house is located in areas with polluted air, you need to choose silicone plasters with a self-cleaning effect, that is, removing contaminants, such as dust and rainwater.
Improper preparation of the base
The base must first of all be dry and free of damage, and also free from grooves and thickenings. In addition, it can be strengthened with soil that limits absorption. It makes it easier further work when applying plaster, and also guarantees excellent adhesion.
Insufficient amount of mortar for plastering work.
The plasters supplied by the manufacturer are almost ready-to-use products and do not need to add any chemical substances. It is only allowed to adjust the density of the mass by adding clean water in the amount recommended by the manufacturer. The finished mass must be mixed using mixers.
Working in adverse weather conditions
Low temperature and high humidity, as well as heat and scorching sun do not contribute to the setting of the plaster. It is also a serious mistake to apply plaster when the air temperature is suitable, but the base itself has a temperature below zero, for example, after a spring night with severe frosts. Also, in case of summer heat, you need to stop applying plaster. In case of precipitation, water can wash out the binder and pigment from the plaster, which will certainly affect the durability and aesthetics.
Therefore, plastering work is best done in spring period or in autumn, when the air temperature is between 5 and 25°C. An alternative is to treat the façade in the morning or evening, then it will not fall on the wall surfaces. Sun rays. IN difficult conditions(precipitation and solar radiation), you should remember to use protective nets on scaffolding.
Work interruption during plastering work
If construction work is stopped during the application of plaster, clear and irregular boundaries between the individual stages of work will be visible on the finished facade. Therefore, plastering should be carried out continuously. In addition, all workers must use the same working method, tools and grouting direction.
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