What is the best primer for putty walls?
Applying a primer on the surface before performing putty allows you to prepare the surface for decoration. The composition of the product includes film-forming substances that ensure reliable adhesion of the building base with the material. This facilitates further work and improves the final finish.
The content of the article
Primer Properties
Priming walls for puttying is a type of work that can not be done without, since the primer has the following properties:
- strengthens the base;
- protects the material from mechanical stress;
- levels the surface;
- eliminates small defects;
- glues the remainder of the dust;
- provides surface waterproofing;
- makes the material resistant to temperature extremes;
- improves putty application;
- reduces the consumption of the composition;
- improves adhesion of a surface and material;
- prevents the formation of fungus and mold on a building base.
Composition benefits
The primer for the walls under the putty has several advantages:
- Ecological purity of the product. As part of the product there are no harmful substances that can harm the body. Exceptions are only some primers containing solvents. Such compounds cause intoxication, therefore, are used only for external work.
- Resistant to temperature changes. Therefore, the primer is recommended to be used in any climatic conditions.
- Compounds, depending on the type, are used not only for internal work. They are also used outdoors.
- The primer is recommended to be used even in rooms with high humidity. The composition will provide waterproofing of the base.
Types of funds
To understand which primer is best for putty walls, it is recommended that you familiarize yourself with all types of primer.
The tool is classified, depending on the composition:
- Acrylic product. Recommended for use on all types of surfaces. Drying time - 4 hours. The product does not contain solvents and harmful substances, therefore it is safe for health. The primer is odorless. It is used even in rooms with high humidity. Another advantage is the reasonable price.
- Alkyd Primer Recommended for use on wood and metal surfaces. The composition dries in 14-15 hours.
- Latex primer. It is recommended for use for all types of surfaces, including for loose and dilapidated. Drying time - 40 minutes.
- Emulsion composition. It is recommended for use for all types of building foundations. The composition does not contain harmful substances. It is odorless and the drying time is 1-2 hours.
- Perchlorovinyl agent. Designed for outdoor use. The composition is recommended for use for gypsum and cement construction substrates.
- Glifthal composition. Designed for metal and wooden surfaces. Such a primer must not be applied on gypsum or cementitious substrates. The primer contains toxic substances, therefore it is used only for outdoor use.
- Polyvinyl acetate primer. It is used only for applying polyvinyl acetate paint. The drying time of the composition is 40 minutes.
- Polystyrene composition. Recommended for use as a putty, as well as for wooden substrates.
The primer is also classified by technical characteristics:
- Antiseptic primers. The composition of such funds includes fungicides that prevent the occurrence of mold and fungus.
- Deep penetration agent. The composition fills all the pores of the base and smooths the surface.
- Anticorrosion primers. They are used for metal surfaces and protect the building base from rust.
- Moisture resistant compounds. Recommended for use in rooms with high humidity.
- Thermal protective agents. Protect the building base from high temperatures.
Is it necessary to apply a primer after puttying?
When an unprofessional master does the repair himself, he wonders if the walls should be primed after puttying. In this case, the use of the primer is also not recommended to be abandoned, since it gives the following results:
- improves the adhesion of the finish material;
- levels the surface;
- facilitates decoration;
- provides waterproofing putty;
- prevents mold and mildew;
- Reduces material consumption when finishing.
Primer Application Rules
Primer application instructions require careful study.
Necessary materials and tools
To carry out the work you will need:
- primer;
- a container for preparing a solution, if a concentrated agent is used;
- a brush, roller or spray for primer application;
- tray for painting;
- ladder.
Surface preparation
Algorithm for surface preparation before priming:
- dismantling of the old coating (as in the photo);
- surface cleaning from dust and dirt;
- removal of mold, mildew and rust in the presence of these problems;
- degreasing oil stains with a special tool, if any, are present on a building base;
- drying the walls if the surface was treated with a liquid.
Solution preparation
If the primer is sold ready-made, then it does not need to be prepared. The tool is stirred and applied as directed. If a concentrated composition is used, it is poured into a prepared container and diluted with water. The proportions are indicated on the package.
Application of the composition
The primer of the walls for puttying is carried out in two layers. The product is applied with a brush, roller or spray. The composition is distributed over the entire surface from the ceiling to the floor. When the first coat is applied, work is suspended to allow the composition to dry. Only after that the surface is re-treated with the composition. Work is suspended until the primer dries. Next, putty is applied to the surface. This is not the final step before finishing. After applying putty, the surface is primed again. Work is carried out only after solidification of the composition. The primer after puttying the walls is also applied in two layers. When the composition is dry, the finish is done.
The video in this article will clearly show how to properly apply the primer on the walls.
The primer and putty of the walls is a necessary stage of repair before finishing the surface. Such work can be performed even by unprofessional masters, if they carefully read the rules for the use of compositions.
