Types of primers, their purpose and tips for choosing

Once upon a time, the only construction equipment was brick and cement, but now progress has covered absolutely all sectors.He didn’t skip the primer mixtures either. There are 5 main types, not counting specialized and homemade ones, so we’ll focus on that.

Why are the walls actually primed? Good soil will allow you to achieve maximum adhesion of the material to the surface of the wall, floor or ceiling. There are different types and types of primers. As a rule, primers are divided solely according to the materials to which they will be applied. For primers responsible for adhesion of the material to the walls, various resin compositions, adhesives, oils, various pigments, and substances are used to speed up the process.

• Acrylic primer – it can be used with equal success in almost the entire construction industry. It adheres perfectly to any surface. Pros acrylic primer the fact that when applied to the surface there is practically no characteristic odor, the layer is completely absorbed and dries in 2-3 hours, forming a binding film. The concentrate is diluted with ordinary water, without losing its properties at all. You should not use it for painting metals, since it practically does not protect against corrosion and rust may appear over time.
• Alkyd primer is the best option for wood and metal surfaces. It is best to process “raw” wood for painting. As a result, we get an ideal surface that can be easily painted over with most finishing materials (varnishes, paints, etc.). The only negative is that this primer is not at all intended for opening plastered and gypsum surfaces, because the alkyd base causes an inappropriate fuzzy feeling on the material.
• Shellac primer for wood – its main and primary task is to plug the knots that are on the cut of the tree, since at high temperatures (40 degrees and above) these knots tend to ooze, releasing resin. Another purpose of the primer is to insulate the stain, which is dissolved in water.
• Metal primer – used exclusively on metal surfaces. The main and primary task is to prevent corrosion and premature rust. Each specific type of metal has its own types of primer mixtures, so when purchasing, please clarify for what purpose and what exactly this polymer is for.
• Primer for concrete – used for painting. When choosing, the compatibility of the solution itself and the material that will be coated is taken into account. Note that the composition in terms of the purpose of the surfaces is also not the same, i. e. For floors and walls, the primer should be different. For floors, a polyurethane mixture or primer based on epoxy resin would be ideal.