Preparing walls for decorative plasteris produced during interior and exterior finishing of the building. It hides minor defects of various coatings well. The mixture is easily applied to the surface during major repairs of the house or during its construction. Preparation of walls for decorative plaster is carried out using a primer, grinding machine, construction vacuum cleaner, sponge, putty.
Before preparing walls for decorative plaster, it is necessary to remove any remaining finishing materials and other visible defects from all surfaces.
Fundamental rules
Concrete or reinforced concrete structures in frontplastering is covered with a wavy notch. Sandblasting technology is used to roughen them. Preparation of walls for decorative plaster involves removing paint, putty and wallpaper from structures. The coating is cleaned of dust using an industrial vacuum cleaner. Such plaster is not applied to the structure if it has oil stains. They can be removed with a solvent. Then the surface is washed with a weak soap solution. The cleaned wall for decorative plaster is inspected. If it is not dense, then it is treated with a primer with a strengthening or restoring property. For this, builders recommend using the following mixtures:
- Acryl-Hidrosol - for crumbling structures;
- Tiefgrund TV - for plasterboard or gypsum composition.
Scheme of wall preparation for decorativeplaster. If the room in which decorative plaster is to be installed has a high level of humidity, then the surfaces are treated simultaneously with antifungal solutions. A grinding machine with a diamond disk is used to fill cracks. These defects are filled with the appropriate composition. Large and deep cracks are sealed with a similar solution, which is applied in several layers. If the walls are primed, then putty is laid. Its task is to level the surface. The next stage involves puttying the walls. If the finishing mixture is to be applied in a thick layer, then this stage is not mandatory. Otherwise, you will need to make a smooth surface. The base putty dries for more than 24 hours. To prevent cracking of the previous composition, a self-adhesive serpyanka mesh is used. It is laid on the coating with a special wide spatula. Each layer of putty is dried and covered with an acrylic primer. Builders recommend using deep penetration mixtures. They differ from ordinary primers in their high adhesion. Return to Contents</a>
Basic constructions
To prevent the putty from delaminating, it is producedimpregnation. Experts do not recommend using compositions based on alabaster or oil. The next step is to polish the surface. Fine-grained sandpaper is used for this. Decorative plaster can be laid on a special primer.
Tools for plastering walls.There are certain rules for applying the final mixture. Its layer thickness should not exceed 20 mm. Grouting the primer provides for its significant compaction. The rubbed and compacted mixture is divided into squares. The composition is applied to the wall surface. The structures must be moistened for 1 week. To do this, the coating is treated with a damp sponge 3-4 times a day. The coating is treated with smooth or textured decorative plaster. Initially, a test is carried out. A place is selected on the surface that will be covered with the finishing material. Such a solution will allow you to see the actual texture of the new coating, including its color. If smooth and textured decorative plaster will be applied to one wall, then masking tape is used to create an even transition line between these mixtures. The structure is covered with the first composition and the last material. Then the surface is finished with a textured analogue. If decorative plaster is applied to a gypsum board coating, then the preparatory work provides for the use of moisture-proof primers. The paint mesh is laid in the seams. If the walls are painted with paint or enamel, then they are matted. For this, a grinding machine or sandpaper is used. Upon completion of this work, a rough wall is obtained. It does not accept primer compositions well. If decorative plaster is installed on wooden walls, then laths are initially installed. Preparation of brick coverings involves choosing the mortar flow in the seams and applying notches.
