Plastering of the basement and foundation of the structure is designed to perform several tasks at once. Such work allows you to obtain high-quality protection of the base from an aggressive external environment, extend the operational life of the structure and can become a real decoration of the exterior of home ownership.
Decorating the basement of the house
The main plastering is carried out by means of cement mortar, on top of which decorative layers are often applied.
The plaster of the plinth should be done in accordance with the requirements
Therefore, such a vapor-permeable material must have a high adhesion coefficient and good strength, and also comply with the following the main requirements, including:
Correctly selected and high-quality plaster mix allows not only to imitate the texture of almost any finishing material , but will also serve as an additional protection to the main layer.
Decorative plaster of the base
Currently there are various materials , suitable for cladding the basement of the building, but due to its durability, reliability and quality, it is the plaster that occupies a leading position.
|Type of plaster mixture||Characteristics and features||Standard flow rate|
|Mineral mixture based on white cement||Does not have sufficient elasticity and can crack, allows you to obtain a vapor-permeable coating that is quite easily contaminated. In addition, this species is characterized by a poorer color range.|| On average, it can vary between 1.5-4.
5 kg / m2.
|Acrylic mixture based on acrylic resin.||It has good elasticity, which minimizes the risk of cracking, has sufficient resistance to the effects of mechanical properties, is represented by a rich and stable coloration, but is characterized by insufficient vapor permeability.|| On average, it can vary between 1.5-4.
0 kg / m2.
|Silicate or silicon mixture based on liquid potassium glass.||Possesses resistance to mechanical damage, good steam permeability, rich color palette and high resistance to mold and mildew. However, the composition is quite difficult to apply, and the presence of alkali makes it not safe for people.|| On average, it can vary between 2.
0-4.0 kg / m2.
|Polysilicate or polysilicon mixture with the addition of silicone resin.||Elastic and UV-resistant composition, easy to apply to the surface and safe enough to work, but has low resistance to mold.|| On average, it can vary between 2.
0-4.0 kg / m2.
|Silicone compound based on silicone resin.||The layers created are resistant to mechanical damage, have excellent vapor permeability, are easy to clean and are available in a very rich color range.|| On average, it can vary between 1.
7-2.4 kg / m2.
Mosaic plaster for plinth
Cement plaster VOLMA-ZOCOL
Cement plaster Yunis-Silin
Traditionally the most popular among domestic developers and an inexpensive option for basement plasters are a variety of mixtures based on cement and sand. To make such a working solution for plastering the basement of the building on your own, you will need to purchase the following materials:
The standard ratio for a part of M400 cement is three parts of sand.
When using the M500 brand, you will need not three, four parts of sifted sand. The amount of water is selected individually, but the finished working solution must necessarily be completely homogeneous, with a characteristic creamy consistency. To increase plasticity, it is recommended to supplement the solution with PVA glue or polymer dispersion.
Building glue, universal
If necessary, add special coloring pigments to obtain a decorative plastered surface.
We sift through a mesh metal sieve river or high-quality construction sand in the required amount.
How to sift the sand
Step 2. Add the required amount of cement to the sieved sand, gradually mixing both free-flowing ingredient. If dry dye pigments are used, they are also added at this stage of the work.
Cement and sand
Dyes for cement
If water-soluble dyes are to be used, then they should be diluted in water, observing the proportion according to the instructions supplied by the manufacturer, and then gradually add to the mixture of bulk components.
Step 4. Add the remaining volume of water to the mixture based on free-flowing components and mix the plaster mortar thoroughly, bringing it to the state of thick sour cream.
The picture shows the preparation of plaster
Base / plinth before repair
Free the lower part of the wall from contact with the ground
The base of any structure is often not only a monolith extending the foundation, but can also be represented by various superstructured structures made of foam fiber blocks or bricks. Depending on the version of the basement part, the preparatory measures will have some differences, which must be taken into account in order to get the highest quality and durable plastered surface.
A feature of the preparation of this type of base surface is the presence of a joint space, which is filled with cement mortar. After a certain period of time, such a solution actively dries up and crumbles, which can manifest itself in the formation of cracks of different sizes, and also sometimes even very significant in depth and width gaps.
At the stage of preparing the brick base, it is very important to thoroughly clean and remove all crumbled or weakly adhering particles and fragments using a narrow construction brush and a metal bristle brush. All cracks formed as a result of such work must be completely cleaned, removing small elements, sand and a layer of dust.
All loose plaster is beaten off with a hammer or chisel
Remove all pieces of plaster that do not adhere well
To thoroughly remove all plaster residues, use a wire brush
Defects found in the masonry are moistened before the repair of the brick plinth facing
To fill the existing voids, bricks of the appropriate size should be selected
The next stage of repairing the basement with your own hands is to fill the voids with prepared bricks and fix them with masonry mortar
Before plastering the surface, it must be thoroughly moistened
This type of surface will also require careful preliminary preparation, which will consists in the removal of poorly fixed and heavily worn fragments of masonry, as well as their competent replacement.
The loose element is subject to mandatory dismantling, high-quality cleaning and return to its original place, with fixation on a standard cement-sand mixture.
Preparing the base
If during the visual Inspection of the concrete-cement basement part, it was possible to identify defects in the form of deep cracks, it is very important to check the strength of their edges and carefully remove all parts that crumble or crumble. If there are signs of even a partial displacement of the foundation, it is reinforced. Small cracks and potholes after preliminary cleaning are smoothed out with a conventional cement mixture.
All surfaces that need to be protected from plaster, such as window frames, must be pasted over with masking tape
It is possible to obtain a durable and high-quality plaster coating only with the correct application of a deep-penetrating primer in two layers.
If it is intended to paint the basement, then only a facade primer is used for processing, which has the maximum drooping ability. Only the use of high-quality materials and adherence to technological requirements for preliminary preparation of the base for plastering can significantly increase the period of operation and improve the appearance.
Silicone quartz primer CT 15 Ceresite
If further decorative finishing work is planned, then it is advisable to give preference to a facade adhesive or acrylic-based primer.
|Type of primer composition||Features and characteristics|
|Alkyd type, deep penetration||The composition is suitable for the treatment of brick or concrete base, previously covered with plaster based on lime.|
|Deep penetration with water-repellent effect|| Best suited for brick plinths on prefabricated foundations, and allows for additional waterproofing.
|Primer for painting||The composition contributes to the uniform distribution of the coloring composition and can be represented by both acrylic and water base.|
Primer for decorative plasters
Base / plinth primer
In order to correctly perform plastering work on the basement of the building, it is necessary to prepare in advance not only consumables, but also the entire set of tools through which the measures for applying mixtures will be carried out:
Tool for plastering
Standard it is not difficult to perform plastering activities on your own, but you need to take into account some of the features of the basement of the building, as well as adhere to the basic rules of the technology for performing such work.
Step 1. We apply notches on the surface, contributing to the best adhesion of the plaster mortar to the basement surface.
For this purpose, it is necessary to make notches with a depth of a couple of millimeters using a metal object with a sharp tip.
Step 2. If necessary, we clean out all large cracks and make a high-quality leveling of all protrusions on the surface under the plaster, and also apply a second layer of primer mortar.
Step 3. If the basement part is supposed to be preliminarily insulated, then by means of frost-resistant mounting foam we fix the insulation in the form of sheet polystyrene on the surface.
Step 4. Using special dowels, a mesh-chain-link with cells measuring 20 x 20 mm is installed.
Step 5. We set the "beacons" that allow not only alignment. foundation base, but also facilitate the work of plastering the basement.
For this purpose, we draw the lines of the boundaries of the plaster layer according to the level, and on the corner part and every couple of meters we set vertically directed pins, between which the threads are also pulled.
Step 6. On the pegs we throw the solution up to the threads, after which we set the "beacons" by pressing into the mixture.
Plastering the base on the chain-link
Plastering on the grid
Plastering the base with your own hands
To make a uniform transition from the old structure plaster to the new one, you can process the joints with foam plastic
At the final stage, the plaster mixture that has slightly "seized" on the basement surface must be very carefully and carefully leveled.
When the surface is dry, level it with a plaster float
Can use a special angled spatula
The last stage of repairing the basement of a private house is to process surfaces that are in contact with the ground.
To do this, you can use waterproofing slurry or bitumen mastic
Plastering of the basement was carried out
DIY plinth repair
Plaster hopper bucket
All further measures will depend on how it is supposed to give the structure's basement attractiveness and durability.As a rule, coloring compositions, as well as facing tiles and decorative embossed plasters are used as a finishing finishing material, therefore, the starting layer must be dried correctly, using a waterproof film coating that can protect the surface from rain and sun for three weeks. At the drying stage, the surface must be moistened with clean water twice every day.
Decorating a basement by creating a relief surface by means of a pre-made stencil is very popular and in demand, when printed, it will be possible to get a drawing that imitates a stone or brickwork. It is fashionable to apply the same pattern with a long and thin object, making grooves in the still fresh plastered surface.
Simple recommendations will reduce the time spent and forces to carry out plastering basement works:
Corner plaster mesh profile
In the photo - plastering the base lighthouses
It is important to note that the full drying of the plastered surface takes about three weeks, after which priming and finishing can be carried out with coloring compositions, but it is strictly forbidden to artificially accelerate drying, using heat guns, building hair dryers for this purpose or other technique.
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