One of the most common types of finishing work during apartment renovation in Porto is painting (or repainting) walls and ceilings. It is also often necessary to paint doors, baseboards, cabinets, and window slopes, which are made of wood and mostly varnished.
Almost always, when performing such work, there is a need to prepare the surface. As a rule, this involves sealing cracks or small holes, as well as unevenness after dismantling hanging shelves and other furniture. This is done using plaster mortar (in the case of large holes) and putty (in the case of small unevenness). Preparation does not necessarily have to be done over the entire surface if the texture of the old paint suits you. But it is important to consider the degree of adhesion of the old material and the new one.
This is a very important point! Usually, preparation should be done in places where the old paint has peeled off together with the putty from the base. In such places, it is imperative to prime with a deep penetration primer. So that it does not fall off again later. To my surprise, I often see that in Portugal they neglect this very important point. All this leads to the fact that subsequently it is necessary to repeat the procedure of cleaning and re-puttying several times in a row.
What paint to use?
After the surface has been thoroughly prepared, you can start painting. We mainly use paint from the CIN company in our work. Most professionals use paint from this company during apartment renovations in Porto, Portugal. The paint is usually applied in two layers. Before applying the paint, it is necessary to prime the surface with a primer from the same company. It will "dust" the surface and provide greater adhesion of materials.

Painting walls and ceilings with a second layer
During a major renovation with a complete replacement of furniture, the second coat of paint is applied after installation of built-in furniture, hanging of doors and installation of baseboards. Since during these works the wall and ceiling coverings are often damaged, scratched or stained.
We consider paint to be one of the best paints for painting walls in Porto СIN Vinil Matt

