2023 Author: Philip Bishop | [email protected]. Last modified: 2023-08-25 07:54
- Initial stage of work
- How to properly prepare a plaster solution
- How to apply plaster mortar correctly
- The classic way of applying plaster
- Calculator of the amount of plaster
Plastering works are performed not only to level the surface, but also to give it various decorative properties.
It is only important to know how to properly plaster with cement mortar. Having studied the technology of preparatory and plastering work, it allows you to obtain a high quality surface for many years.
But what do you need to know in order to properly apply plaster on the walls?
The work is divided into several stages.
The stage of surface preparation, tools and materials.
Installation of beacons. The installation of beacons is described on the website in the article "How to align walls with beacons using plaster".
Preparation of the composition and application of plaster to the surface.
Initial stage of work
Each surface must go through a preparation stage.
Surface preparation for plastering includes cleaning the surface from old paint, wallpaper, dirt and greasy stains.
To facilitate the removal of old wallpaper, apply a special lifting solution to the surface. After a short exposure, lift the old wallpaper with a spatula, turning it under the wallpaper.
Old paint is cleaned off with a spatula or wire brush.
The cleaned and dried surface must be primed.
A primer is a liquid, which contains substances that increase the adhesion (adhesion) of building materials.
It is imperative to follow the rule of using finishing materials from one manufacturer.
If you bought a dry plaster mix from a certain manufacturer, then buy the primer from the same manufacturer.
A primer called Betokontakt is in high demand, which is a polymer dispersion with increased resistance to alkali. The composition of the liquid includes quartz sand, which increases the adhesion of the primer several times.
The plastering process is carried out subject to the following requirements:
- the temperature in the premises should be in the range of + 5… 30 ° C, and the relative humidity of the air should not be higher than 60%;
- a special tool is used;
the plastering solution is applied in stages using special techniques.
The most popular tools are:
- spatulas and trowels of various sizes;
- wide matting brush;
- duralumin or wooden falcon;
- half-grater, grater, rule.
How to properly prepare a plaster solution
The selected plaster mix is prepared according to certain rules and strictly according to the attached instructions.
Pour the required amount of water into a clean plastic bucket according to the instructions attached to the dry plaster mixture. Then add the dry mixture in the desired parts.
Use a special mixer to stir the mixture.
You need to prepare such an amount of solution that you can process during the life of the solution. It is indicated on the package of dry plaster and is less than 1 hour
The mixer can be replaced with a drill with a nozzle for mixing plaster mortars. Use only the solution nozzles, not for stirring the paints.
The consistency of the finished solution resembles a cream over a cake. Details about the preparation of plaster mortar.
How to apply plaster mortar correctly
Before applying the solution, it is necessary to fix the reinforcing mesh on the wall or stuff the shingles. Be sure to cut the seams on the brick, make a notch on the concrete surface. The depth of the brick joints to be cut must be at least 5 mm. The concrete surface is moistened with water.
To apply the putty on the wall, use two spatulas: up to 50 cm long and a spatula up to 10 cm wide.
Using a small spatula, the mortar is applied to a large one, and with a large one is applied to the wall.
The solution can be applied with a trowel, trowel.
Throw in the solution between the beacons from below, and go up. The solution is leveled with a rule that is constantly moving in the horizontal plane and moving up.
Remove the rest of the putty from the rule with a small spatula, applying it to the right place on the wall.
Always clean the container from the remaining solution after it has been used up. The new solution is mixed only in a clean container without traces of the previous solution.
Remaining defects on the wall are eliminated after the mortar dries. The formed sagging or furrows are best removed with a spatula.
First, the ceiling is plastered, and then the walls.
The classic way of applying plaster
The plaster mortar is applied in several layers.
The first coat is applied by spraying. The second layer is a primer. The third layer is a cover. The adhesion strength of the plaster on the wall depends on the application of the first layer.
The spray is applied with a liquid solution that fills the cells of the reinforcing mesh, shingles, notches on concrete, joints in brickwork.
The thickness of the layer on concrete and brick does not exceed 5 mm, on a mesh or shingle up to 10 mm.
A trowel is used for spraying.
The surface is rough and does not require leveling.
It is necessary to prime the sprayed layer after hardening, but still wet. Determined by an open palm applied to a rough surface. The surface is quite hard, but also wet at the same time.
The priming solution is somewhat thicker than the spray solution, it is well spread with a spatula.
A solution is applied to the middle of the falcon and, using a wide spatula, the composition is pounced on the wall. Smooth each portion of the solution with a spatula. The solution is overlapped and smoothed immediately.
A falcon is a square wooden plank, in the middle of which a plaster is applied.
The priming layer is closed with a finishing layer of plaster and is designed to eliminate the smallest defects. The thickness of the finishing layer does not exceed 2 mm. The finishing coat is applied to the wet primer with a wide trowel in an arc, pressing the bottom edge against the primed layer.
To obtain a perfect surface, it is recommended to grout, eliminating minor irregularities. Next, watch the video on how to properly plaster with cement mortar.
Calculator of the amount of plaster
|Average layer thickness||mm|
|Plaster type||GypsumDecorativeBark beetleRotbandCement mixVetonite|
|Weight of a bag of plaster||Kg|
|Bags required:||Total weight|
Decorating, Leveling The Walls With Plasterboard With Your Own Hands, Photo. Correct Cladding, Leveling The Walls With Plasterboard Video
We learn to align the walls of the gypsum board with sheets correctly
Plastering The Walls With Your Own Hands. Internal Gypsum Plaster Of Walls, Installation Of Beacons On The Wall, Plastering Technology Video
Tips for the correct and quick plastering of walls in the apartment yourself. A training video and important points for applying plaster to the wall in different ways and materials
Useful tips for choosing a plaster mixture and leveling walls with beacons with your own hands. What a beginner needs to know, the video will help you easily and with high quality plaster the wall
Corner alignment is a very important aspect in the final part of a wall renovation. You can quickly level both internal and external corners with your own hands using drywall or wet plaster
DIY apartment renovation video - leveling the walls with plaster