Difference Between Primer and Topcoat How to use primer and topcoat

The difference between the primer and the topcoat: first, the composition between the two is different, the primer contains resin, additives, solvents and fillers, while the topcoat is composed of resin, solvents, additives and little or no filler; Second, there is a different role between the two, in the paint system, the primer is the first layer to be brushed up, its main role is to make the paint surface smooth, so as to support the top coat, make up for the micro cracks on the wall, ensure the uniform absorption of the top coat, make the paint surface look more plump, reduce the cost of decoration, and save energy, and the top coat is the last "gatekeeper" in the whole paint system, it can reflect the gloss, feel, scratch resistance and other characteristics of the entire paint surface. Therefore, the quality of the topcoat directly determines the quality of the whole paint film.

What is a primer?

The primer is usually off-white, and has a certain viscosity of the liquid, can be directly applied to the surface of the paint paint, is the first layer of the paint system, used to improve the adhesion of the topcoat, increase the fullness of the topcoat, improve the decoration of the topcoat, provide alkali resistance, provide anti-corrosion function, etc., at the same time can ensure the uniform absorption of the topcoat, so that the paint system can play the best effect, generally according to the coating requirements can be divided into the first primer, the second primer, etc.

What is a topcoat?

The topcoat is the final coating of the painting, and it is the last layer to be applied in the decoration of the building wall, and the overall effect presented after the decoration is reflected through this layer. Therefore, there are higher requirements for the materials used, not only to have good color and brightness, but also to have good pollution resistance, aging resistance, moisture resistance, mildew resistance, but also to have the characteristics of no pollution to the environment, safe and non-toxic, no fire danger, convenient construction, fast drying of the coating film, good light and color retention, good air permeability, etc. It has decorative and protective functions, such as color, gloss, texture, etc., and also needs to be resistant to harsh environments.

The role of the primer.

1. Closed. The primer can effectively seal the base layer and make the wall base layer stronger. Some walls are more alkaline, and alkaline flowers are produced after being soaked in moisture and water, the scientific name is "pan alkali", which causes the formation of crater-like protrusions on the surface of the paint film, and forms a layer of alkali cream on the surface of the paint film in serious cases, which eventually destroys the paint film.

Latex paint primers can act as a sealant to alleviate this situation. However, if the walls of your house are dry and the floors are higher, it may not be a problem if you don't use it, but it is recommended that you use it, which is more safe.

2. Adhesion.

The primer can enhance the adhesion of the topcoat, improve the adhesion between the latex paint film and the wall, and avoid the peeling and peeling of the wall.

3. Fill in.

Primer can make up for microcracks and improve the flatness of the wall, if your wall is relatively flat, you can do without primer, of course, the use effect will be better.

4. Cost saving.

The first primer is generally cheaper than the topcoat, so applying the primer before applying the topcoat can save the decoration cost.

Primer and topcoat exist at the same time, you have me, I have you. However, primers and topcoats complement each other and have their own roles. The colorful topcoat needs to be backed by the primer, and the topcoat is the "face" of the primer.

The role of the primer: The primer is the first layer of the paint system, which is used to improve the adhesion of the topcoat, increase the fullness of the topcoat, provide alkali resistance, provide anti-corrosion function, etc., and at the same time can ensure the uniform absorption of the topcoat, so that the paint system can play the best effect. No matter how good the paint-free is, you need to brush the primer first to improve adhesion, corrosion resistance, alkali resistance, etc.

Click**Learn more] The role of topcoat is the final coating of painting, and it is the last layer of painting in the decoration of the building wall, and the overall effect presented after decoration is reflected through this layer. The topcoat has high requirements for the material, such as good color and brightness.

How to use primer and topcoat Primer and topcoat are both latex paints, which are generally used together, and their functions are different. When painting the wall, you can brush the primer after the putty is dry, generally do the primer twice, the topcoat three times, and each time the paint must be dried before the next time. When brushing the primer, the wall eats a large amount of paint, and the primer should add a little more water to ensure that it can be painted evenly.

When brushing the topcoat, do not add too much water, which will affect the thickness of the paint film, the feel and the hardness of the paint film.

The difference between a primer and a topcoat is mainly before and after the process. Primer refers to the paint that is applied directly to the surface of the object as a solid foundation for the topcoat. It is required to adhere firmly to the surface of the object to increase the adhesion of the upper coating and improve the decoration of the topcoat.

According to the coating requirements, it can be divided into the first primer, the second primer, etc. A topcoat, also known as a final coat, is the last layer of paint to be applied in a multi-layer coating. It should have a good resistance to external conditions, and must have the necessary hue and decoration, and have a protective effect on the bottom coat.

For outdoor use, the topcoat should be made with excellent weather resistance. Both primers and topcoats are very important paints.

"1.The composition is different: the primer is composed of four parts: resin, filler, solvent and additives; The difference between the topcoat component and the primer is mainly that the former has little or no filler.

2. The role is different: the primer is the first layer of the paint system, which is used to fill the paint surface, support the topcoat, provide fullness, reduce costs, and help save energy; The topcoat is the final coating of the coating, which is the last layer to be applied in the decoration of the building wall, so as to increase the number of coating layers of the topcoat and the method of thickly applying the topcoat to increase the thickness of the paint film. The thickness of the coating is mainly provided by the primer, while the topcoat is mainly used for decoration and protection. "

1. The composition is different.

Primers consist of resins, additives, solvents, and fillers, while topcoats consist of resins, solvents, additives, and little or no fillers.

2. The role is different.

The primer is used to improve the adhesion of the topcoat, increase the fullness of the topcoat, provide alkali resistance, provide anti-corrosion function, etc., and at the same time can ensure the uniform absorption of the topcoat, so that the paint system can play an effective role.

The topcoat is the final coating of the coating, which is a layer applied after the decoration of the building wall, and the overall effect presented after the decoration is reflected through this layer. The topcoat has high requirements for the material, such as good color and brightness.

3. Different usage.

When painting the wall, generally after the putty is completely dry, the primer needs to be brushed twice, usually the primer needs to be brushed twice, because the wall has a relatively large paint surface, so it is necessary to add more water moderately when adjusting the primer, so that the primer can be evenly painted.

The topcoat generally needs to be painted three times on the wall when painting, and it can not add too much water like the primer, because adding too much water will affect the feel, thickness and hardness of the paint film, so only add a little water when brushing the topcoat.

How to use primer and topcoat After talking about the difference between primer and topcoat, let's understand how primer and topcoat should be used. Both primer and topcoat are latex paints and usually need to be used together. When painting the wall, generally after the putty is completely dry, the primer needs to be brushed twice, usually the primer needs to be brushed twice, because the wall has a relatively large paint surface, so it is necessary to add more water moderately when adjusting the primer, so that the primer can be evenly painted. The topcoat generally needs to be painted three times on the wall when painting, and it can not add too much water like the primer, because adding too much water will affect the feel, thickness and hardness of the paint film, so only add a little water at the last pass when brushing the topcoat.

First, the effect of the topcoat.

The topcoat is the final coating of the painting, and it is the final layer of the wall decoration, and the overall effect after the decoration is expressed through this layer.

The topcoat has high requirements for the material, such as good chromaticity and brightness, etc., should have outstanding resistance to external conditions, and it is necessary to have the necessary hue and decoration, and have a maintenance effect on the bottom coat. When using a topcoat for outdoor use, choose a paint with very good weather resistance. The decorative effect and weather resistance of a topcoat depends not only on the base of the lacquer used, but also on the pigments used and the preparation process.

Second, the effect of the primer.

The primer is the first layer of the paint system, which is used to improve the adhesion of the topcoat, add the fullness of the topcoat, supply alkali resistance, and provide anti-corrosion functions, etc., which can ensure the uniform absorption of the topcoat and make the paint system play a greater effect. No matter how good the topcoat is, you need to brush the primer first to improve adhesion, corrosion resistance, alkali resistance, etc.

Before applying the topcoat, applying a layer of sealing primer can not only save the cost of decoration, but also have the advantage of getting twice the result with half the effort in the long run and the decorative effect. Together, the excellent adhesion of the primer results in a smoother wall, making the topcoat easier to apply and reducing the amount of topcoat used. In this way, the wall not only avoids paint disease, but also helps to maintain the painting effect for a longer period of time.

Differences: 1. The composition is different.

The primer is composed of four parts: resin, filler, solvent and auxiliary; The difference between the topcoat component and the primer is that the former has little or no filler.

2. The effect is different.

The primer is the beginning layer of the paint system, which is used to fill the paint surface, support the topcoat, provide fullness, reduce the cost, and help save energy; The topcoat is the final coating of the coating, which is the final layer of the wall decoration in the construction, and the thickness of the paint film is added by adding the coating layer of the topcoat and the method of thickly applying the topcoat. The thickness of the coating is mainly supplied by the primer, while the topcoat is mainly responsible for decoration and maintenance.

1. The composition of the primer is resin, solvent, additives and fillers, while the topcoat is composed of resin, solvents, additives and little or no fillers;

2. The two have different functions, in the construction, the primer is the first layer to be brushed up, the most important role is to make the paint smooth and flat, so as to support the topcoat, reduce the cost of decoration, and save energy, and the topcoat is the last "gatekeeper" in the whole construction, it can reflect the gloss, feel, scratch resistance and other characteristics of the entire wall paint, so the quality of the topcoat directly determines the quality of the whole paint film.

Primer first, then topcoat.

When you need to use paint in home decoration, you may come into contact with the base coat and top coat at the same time, which are different types of paint, so what is the difference between the primer and the top coat? After buying the primer, you need to use it first, and some people don't know how to use it and want to see how to use the primer first.

1. What is the difference between primer and topcoat.

1. The composition between the two is different, the primer contains additives, resins, solvents and fillers, while the topcoat is composed of resins, solvents, additives and little or no fillers;

2. There is a different role between the two, in the paint system, the primer is the layer that is brushed up, its main role is to make the paint surface smooth, so that the paint plays a supporting role, so that the paint surface looks more plump, so that the cost of decoration is reduced, and at the same time save energy, and the topcoat is the latter gatekeeper in the entire paint system, it can reflect the texture of the entire paint surface, gloss, scratch resistance and other characteristics, so the quality of the topcoat directly determines the quality of the whole paint film, design.

Second, how to use the primer.

1. Both primer and topcoat belong to latex paint, and they usually need to be used. When painting the wall, the general reputation hall spike needs to brush the primer after the putty is completely dry, usually the primer needs to be brushed twice, because the wall has a relatively large paint surface, so it is necessary to add more water moderately when adjusting the primer, so that the primer can be evenly painted; The topcoat generally needs to be painted three times on the wall when painting, and it can not add too much water like the primer, if the water is added too much, it will affect the feel, thickness and hardness of the paint film, so only add a little water when brushing the topcoat.

2. The role of the primer: the primer is a layer of the paint system, which is used to improve the adhesion of the topcoat, increase the fullness of the topcoat, provide alkali resistance, provide anti-corrosion function, etc., and at the same time ensure the uniform absorption of the topcoat and make the paint system effective. No matter how good the topcoat is, you need to brush the primer first to improve corrosion resistance, adhesion, alkali resistance, etc.

3. The role of topcoat: topcoat is the final coating of coating, which is a layer of painting after the decoration of the building wall, and the overall effect presented after decoration is reflected through this layer. The topcoat has high requirements for the material, and its color and brightness are relatively good.

What is the difference between a primer and a topcoat? Topcoat and primer are both used in paint decoration, and they are also materials that must be used, and can be purchased according to the actual situation. How to use primer?

Remember to use the primer according to the actual situation, and leave it to a professional painter to complete the best, so that it is not easy to make mistakes.