August 12, 2017 18:08
Any mixture of wall plaster should consist of: water, binders components (cement, clay, gypsum, lime) and aggregates (slag, dust, sand, chips).In the case where no fillers, binders some components are not able to provide the necessary strength.Selected ingredients (aggregates and binders) depending on the type of surface.
All components are pre-should be screened.Clay and lime brought to the creamy state.The water in the mixture has a major role.It provides a high ductility, excellent setting and hardening of the material.Depending on the consistency of all the solutions may be "lean" and "fat".
«Fatty» means that the composition of the mixture over the binder ingredient than is necessary.As a result, the material for plaster walls get poor quality and coverage quickly crack.These cracks moisture begins to fall, which leads to eventual destruction of the material.
«Lean» means a small content of binder ingredient (eg, lime).The result is that the plaster provide rather weak and unreliable coverage.Also, they do not seize the base and give poor adhesion for the subsequent application of paint or wallpaper.
For quality finish is best to choose a mixture of medium density.Do not "fat" and "skinny."
Depending on the type of composition and method of preparation is different.Different mixtures necessary to maintain certain proportions and cooking rules.For information on how to make mortar for plastering, describe below.
After formulations described above should not be the question arises - how to make plaster.Only and always an important point is that before applying any mixture you need to prepare the surface.To this end, it is important to remove the old plaster and choose the base mixture, and then textured plaster.
By the way, for interior decoration better to choose cement, gypsum or lime composition.Each one of them is selected depending on the substrate.