Waterproofing plaster

Plaster waterproofing is essential to preserving the longevity and integrity of a building’s facade. It acts as a barrier against the weather, preventing moisture from penetrating the building. The purpose of this particular type of plaster is to repel water, which keeps it from soaking into the walls and causing damage over time.

Waterproofing plaster, in contrast to ordinary plaster, has ingredients that improve its ability to withstand moisture. These additives frequently consist of chemicals or polymers that form a barrier to prevent water from penetrating. This guarantees that the facade is protected even in the event of intense rain or moisture exposure.

Waterproofing plaster application requires careful planning and application methods. For the best adhesion and efficacy, the surface must be completely primed and cleaned before plaster is applied. Applying the plaster correctly improves its water-repellent qualities and adds to the facade’s overall visual appeal.

Plaster that effectively waterproofs a building not only preserves its structural integrity but also adds to its longevity and energy efficiency. It minimizes the chance of mold, mildew, and structural deterioration by keeping water out, which lowers maintenance costs and keeps the facade looking good for years to come.

Waterproofing plaster is essential when it comes to preventing moisture damage to house facades. By preventing water infiltration, this specialty plaster protects the building from possible problems like moisture, the growth of mold, and the deterioration of facade materials. For both builders and homeowners, knowing the advantages of waterproofing plaster and how to apply it is crucial to guaranteeing the durability and resistance of external surfaces to changing weather. Does this fulfill your search criteria?

Characteristics and properties of waterproofing plaster

Mixtures for waterproofing create a thick, solid layer that keeps moisture from seeping through the foundation or walls. They are used indoors and outdoors, and they can be applied manually or mechanically. Waterproofing plasters are classified into two categories based on the makeup of their constituent parts:

• cement-sand;
• asphalt.

In private construction, the first kind is more prevalent and extensively utilized. It is possible to manufacture cement-sand plaster on its own, and applying it differs very little from traditional plastering.

Using plaster that is cement-sand based

Cement of the M400 brand and higher is used to prepare the solution; bitumen additives, small quartz sand, stone flour, and finely ground stone coal are being used as fillers. Liquid glass, ceresite, sodium aluminum, and other hydrophobizators are added to the mixture to increase its water resistance.

Typically, the binder to filler ratio is 1:2, but it is occasionally 1: 3. If the plaster is applied from the water pressure side, the thickness of the coating should be 25 mm for maximum efficiency. Application is done in multiple layers, with a 3 mm minimum thickness. Such waterproofing offers a lot of benefits.

• high reliability even with prolonged flooding of the foundation and walls of the house;
• resistance to multiple freezing;
• Environmental safety – by plaster composition, you can finish the internal surfaces of the tanks for drinking water;
• plaster serves as an excellent basis for painting and lining;
• It has good adhesion;
• low cost of solution;
• resistance to mechanical damage.

The coating can only be applied to a thoroughly prepared basis in order for it to be high-quality and long-lasting. Furthermore, the surface needs to be sturdy and resistant to shrinking; otherwise, cracks will appear all over the plaster. Selecting factory mixtures with component proportions that can be verified is better for work. They are made in a dry form, and all that is needed to make the solution is a proper ratio of powder to water.

The majority of industrial facilities use asphalt plaster. Because of its high cost and need for specialized equipment for application, the use of this type of waterproofing in private construction is not always warranted. Sand, oil bitumen, asbestos dust, and powdered mineral fillers are all ingredients in plaster.

Asphalt plaster can be applied in two different ways: cold and hot. Working with a cold solution is much simpler and it can be applied manually or by machine. The second approach entails applying the solution with specialized equipment after heating it to 180 degrees. Waterproofing is as dependable and long-lasting as it gets in this situation.

Well-known brands of waterproof cement-sand plaster

CR 66 / CR 166 Ceresit

When applied in a single layer, conventional waterproofing plaster uses 1.5 kg per m2 on average. Penetrating trains use less energy—between 0.4 and 0.6 kg/m^2. Naturally, the quality of the surface, the application technique, and the layer thickness all have a direct impact on this indicator. For this reason, all materials should be carefully calculated and added with a margin of 10-15% of the estimated amount of mixture before purchasing.

Elastic waterproofing mass Ceresit CR 166

Prices for waterproofing plaster

Waterproofing plaster

Conditions for applying plaster

It is not possible to use waterproofing plaster solutions on loose, crumbling bases, gypsum-containing coatings, surfaces with oil spots, paint residue, bitumen traces, or almies. Because of all of this, plaster does not last as long because adhesion is reduced. Additionally, it is not acceptable to cover up any cracks on the bases that are wider than 0.5 mm.

Plastering such a wall requires first making the necessary repairs.

The layers of paint, old plaster, or putty must be completely removed in order to prepare the surface. It is best to warm the paint with a hairdryer or use specialized chemical washing if the paint is difficult to remove. After that, a spatula can be used to remove it with ease. A metal brush is used to clean plaster and putty; a grinder with a nozzle can also be used. Processing using a sandblasting device yields excellent results.

Verify the brick’s hardness.

To disassemble old plaster, use a hammer and a chisel.

Once the old plaster has been removed, use a metal brush to remove any leftover plaster particles.

Brick and masonry seams must be thoroughly cleaned and examined using a metal brush. The old masonry is cleaned to a solid base and then filled with new cement mortar if the seams are crumbling. Prior to sealing, cracks must be cleared of dust and extended to a depth of 1-2 cm.

The base is pre-plastered using a standard cement-sand mixture when decorating surfaces with a heterogeneous structure, such as concrete and brick or brick and stone.

Similar to regular plaster, if the thickness of the waterproofing layer is more than 10 mm, reinforcement is required. When applying a thick layer of plastering solution to a rough masonry surface or one that has many defects, metal galvanized mesh with cells ranging in size from 10×10 mm to 20×20 mm is utilized as reinforcement.

Plastic dowels and self-tapping screws with a step step of 40–50 cm are used to secure it to the base.

Use a self-tapping screw with a bruised puck to mount to brickwork.

On a level surface, fiberglass mesh should be used, as long as the layer thickness is kept to a maximum of 30 mm.

The picture shows the installation of a reinforcing mesh on the house’s facade.

There should be a minimum of three months between the masonry’s construction and waterproofing. This holds true for concrete surfaces as well. Waterproofing plaster can be applied no sooner than 28 days after initial alignment is completed using regular cement mortar. Plastered should be done in dry, calm weather with a maximum temperature of +30 degrees and a minimum temperature of +5. 60% is the ideal air humidity. Furthermore, these circumstances ought to be noted not just throughout the plastering phase but also in the days following the job’s conclusion.

Prices for plastering nets

Plastering nets

Plaster waterproofing is essential to preserving the longevity and structural integrity of building facades. It acts as a barrier to keep out moisture, stopping water stains from forming on the walls and causing damage over time. Waterproofing plaster extends the life of the facade and preserves its structural integrity by forming a barrier.

The ability of waterproofing plaster to withstand water penetration even in the event of severe weather or heavy rainfall is one of its main advantages. This is particularly crucial in areas that experience a lot of humidity or frequent rain. Waterproofing plaster lowers the chance of moisture buildup, the growth of mold, and possible structural problems that may result from water seeping into the facade.

Furthermore, by preserving the building envelope’s insulating qualities, waterproofing plaster can enhance energy efficiency. By excluding moisture, it stops heat from transferring through damp walls, minimizing heat loss in the winter and preserving a cozy interior climate.

Investing in premium waterproofing plaster is a long-term, proactive move that benefits both builders and homeowners. In addition to preserving the facade’s visual appeal, it lowers maintenance expenses related to water-related damage. Property owners can protect their investment and take pleasure in a long-lasting, robust facade by selecting the appropriate waterproofing plaster type and making sure it is applied correctly.

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