The 3 phases of plastering
In the construction of a building the eye also wants its part. It follows that the design and comfort of a home are of fundamental importance. In the case of pre-existing homes, only a secondary intervention is necessary and the causes that make it necessary can be multiple: the passage of years leading to the building becoming ruined or work previously carried out in a superficial and unprofessional manner.
Usually the external walls of the house are the most subject to renovations for the most disparate reasons: atmospheric precipitation, continuous changes in temperature, strong winds, etc. To overcome these problems and keep the home in good condition, it is necessary to periodically carry out interventions such as plastering the facade of your home.
Methods and techniques for plastering
When plastering an external wall it is very important to take some basic recommendations into consideration. First of all, it is well known that the surfaces on which plaster is applied must be wet, clean and rough. Furthermore, each layer of plaster must be applied only when the previous one has been dried correctly and completely.
There are many plaster application techniques but in each of them there is the repetition of three essential phases which cannot be done without and which take their name from the three overlapping layers that make up the covering. We therefore have the first layer called Rinzaffo which is in contact with the masonry and has the main purpose of attaching as best as possible to the support, the second is called Arriccio and is created after the Rinzaffo. It is a layer characterized by good mechanical and water resistance thanks to which it allows us to obtain a uniform surface. Finally we have the Intonachino which represents the visible layer and is characterized by its fine grain size and pleasant aesthetics.
Plaster composition
In the construction sector it is possible to have a vast range of materials available for plastering external walls with different installation times, thicknesses and costs which must be evaluated based on the type and location of the building being worked on.
Plaster is mainly composed of a particular mortar made up of water, inert materials (such as sand) and a binding agent which, based on the type used, generates an initial distinction between the types of plaster. You can therefore opt for a lime plaster which guarantees excellent breathability and excellent adhesion to the external walls. However, those who want to have acoustic bridges can only prefer a gypsum-based or even cement-based plaster, which prevents the formation of condensation and mold in winter.