Gypsum plasters and types of treated surfaces
When the plaster is laid on ordinary brickwork, it is acceptable and considered the best option to use cement plaster and apply thick layers, if necessary reinforcing the layer with a plaster grid. Ordinary building bricks are the ideal surface for applying plaster, requiring the least amount of time and money.
A more complex task is the plastering of facing bricks. When working with it, you have to use rebar and special primers. Most often, facing brick plaster should not be produced on its own, and it is better to invite trusted professionals. The main problem is poor adhesion of plaster to the wall due to the smoothness and low porosity of the latter. As a result of improper application, the plaster soon peels off and falls away from the wall. Even with high-quality reinforcement, cracks soon appear on the surface of the plaster.
In the case of plastering a concrete wall that has a smooth surface, only gypsum plaster can be used. In this case, the mandatory stage of work is priming the surface. As a rule, gypsum plasters and primers contain a certain amount of quartz particles that provide a high degree of adhesion to the surface, or other components with similar properties. To reinforce the plaster layer, a polymer mesh with 5x5 mm cells is used.
For applying plaster to concrete walls with a rough surface, both gypsum and cement compositions are used. In this case, the primer is also necessary.
For applying plaster to foam concrete blocks or panels, gypsum compounds are mainly used in combination with a special "deep penetration"primer.
Gypsum pazogrebnevye plates are also covered with gypsum plaster using usually a primer.
Thus, the choice of the type and composition of plaster, the question of application and choice of primer-you need to approach only taking into account the type of surface.