Primer for old oil or water-based paint: can it be applied?

When carrying out repair work, it is necessary to carefully prepare the base for applying finishing materials. A lot of effort and time is spent on removing old paint. When carrying out repairs, you can use an alternative method and apply a variety of primers over the surface of the old paint. Today we’ll talk about the process and options for mixtures suitable for the work.

Is it possible to apply primer to old paint?

Since ancient times, paint has been able to decorate and protect a surface. During operation, the old layer begins to peel off. But updating it is impossible without preparation. In this case, a paint primer will come to the rescue, making the paintwork durable and strong.

Many people planning to make repairs are interested in whether it is possible to apply a primer to oil-based or water-based paint. Before applying any materials, be sure to treat the old paint layer to prevent it from cracking and peeling.

If the paint peels off in chunks, experts recommend using a metal brush and cleaning the surface.

If the process is complex and the coating is thick, it is necessary to pre-prime the material by applying the primer once using a roller. Before painting, you need to dry the work surface.

Before applying any materials, be sure to treat the old paint layer to prevent it from cracking and peeling.

Before painting metal surfaces, the surface should be pre-primed. This measure prevents cracking, swelling and loss of the attractive appearance of the coating. After a few weeks, whole chunks of paint begin to come off. Various types of plaster can also be applied to wood, chipboard, plywood, MDF, and concrete.

The application of primer compositions helps to increase the efficiency of repair work, the strength and durability of the layer. After plastering the surface, much less paint will be required than expected before painting.

Before painting metal surfaces, the surface should be pre-primed.

Why do you need paint primers?

A primer over old paint makes the paint coat effective. The substance has a number of functions:

Helps strengthen the base of the surface;
Reduces the degree of moisture absorption by the surface;
Helps reduce the amount of paint consumed;
Increases coating adhesion;
Protects wallpaper and other similar materials from stains;
Helps protect the base from the negative effects of moisture, thereby preventing
Rotting and rust does not form;
Prevents the development of fungus.

It is necessary to apply plaster on a loose base. The use of the substance for treating walls in rooms with high humidity is indicated.

A primer over old paint makes the paint coat effective.

Specific characteristics of solutions

If the room has special conditions, you may need to choose a special purpose primer. This could be a primer:

Antiseptic. It contains an antiseptic that prevents the development of microorganisms. Protects the wall from the appearance of fungus or mold.
Moisture-proof. Gives the surface water-repellent properties, which is necessary in rooms with high humidity.
Deep penetration. Strengthens loose and porous substrates. Prevents peeling and cracking of decorative coating.
Non-contact or adhesive. Improves adhesion to finishing composition. Used for non-absorbent smooth surface.

The packaging of the drug will necessarily contain recommendations for its use. The types of materials with which it is combined and the application conditions are indicated. This information should not be neglected. If the product needs to be prepared for use in some way, this should also be indicated.

Primer for dry and wet areas Axton, 10 l

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Walls
How to prime walls before puttying: simple instructions and tips on choosing a material

Types of primers according to composition, which one is suitable over paint

Paint primer is divided into two types according to its composition:

To prepare the surface for primary treatment, it is necessary to use primer compositions;
The use of conventional primers helps improve adhesive properties.

Primers that have a mineral base allow you to prepare brick, plastered, and concrete surfaces before painting. The alkyd variety is suitable for treating fiberglass, wood, chipboard and other surfaces. Such substances are characterized by rapid drying and excellent leveling of the base.

Universal formulations are popular. They strengthen crumbling, damp and dilapidated surfaces. The composition improves the acrylic layer, promoting its strengthening and adhesion.

Depending on the type of binder, there are several types of primer available for strengthening old paint. The popularity of not only the acrylic variety is growing, but also alkyd, mineral, and also universal, which can improve the exterior coating. Let's consider the distinctive properties of several well-known brands used to strengthen the old paint layer.

Primers that have a mineral base allow you to prepare brick, plastered, and concrete surfaces before painting.

Primer VD-AK-0301

This primer paint is used to enhance the acrylic variety. Allows you to treat absorbent substrates and old painted surfaces. After the substance dries, a white layer remains. For 1 sq.m. 250 g of soil is required.

The material can withstand temperatures down to minus 40 degrees Celsius. You can freeze and thaw it several times without losing its properties. The primer takes a day to dry.

This primer paint is used to enhance the acrylic variety.

Neomid

The difference between Neomid is its high degree of versatility. This primer allows you to prepare the basis for applying water-based, acrylic and any enamel paints for walls, helping to improve adhesive properties. The composition dries quickly, within 50-60 minutes.

An attractive appearance is obtained after double processing. Be sure to thoroughly dry each applied layer.

The difference between Neomid is its high degree of versatility.

Optilux

This type of primer is classified as a universal substance. It is used for application on enamel, nitrocellulose coatings, old oil paint, varnished and concrete substrates. The Optilux anti-corrosion composition also allows you to prepare walls for wallpapering and improve facade decor.

This type of primer is classified as a universal substance.

How to calculate the cost of funds

To determine the approximate amount of material, simple calculations should be made. First, we determine the area that needs to be primed. This can be done by multiplying the height of each wall by its length and then adding the results together. It is important to remember to subtract the area of doors and windows. We should have a certain number of square meters.

Now we determine the rate of consumption of the product. It must be indicated on the packaging. It is rare that in such a case there will be only one number. More often a small fork of values is shown. This is due to the fact that different types of base absorb differently. Knowing what kind of coating we have to work with, we select a number and multiply it by the previously calculated number of squares.

We decide on the number of layers. If you need one, all you have to do is multiply the result by a factor of 1.15 to get some supply of material. In the case when it is supposed to apply two or more layers of primer, we multiply the calculated value by their number, and then by the coefficient. This way we get an approximate amount of primer, which we focus on when purchasing.

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The required amount of primer depends on the type of base, the number of its layers, absorbency, etc.

Decoration Materials
How to paint wet rooms: tips and life hacks

How to properly prime walls with old paint

Primer solutions first perform the main task of degreasing. To get started, you must properly dilute the substance.

The mass should be homogeneous. This happens during the process of mixing the substance. If the composition is too thick, it must be diluted with water. Do not forget that the solution must stand for 2-3 hours. After this, the substance is mixed again until homogeneous.

There is no need to pour water heavily. Pour in the liquid gradually, stirring the mixture each time. When the substance has become homogeneous, you can begin to treat the surfaces.

To conveniently distribute the composition, use a roller. Start working from the bottom, gradually moving up. During the process, make sure that there is no dripping of the plaster.

The solution should sit for 2-3 hours.

The nuances of applying primer to old paint

Before applying the primer solution to the old paint layer, it is necessary to carry out work to prepare the base. The process is simple and can be done by anyone as long as the following rules are followed:

First, clean the surface from unevenness and rough elements. In this case, the peeling and cracked areas are removed. They also capture places that are not held tightly together.
Remove dirt and dust from the surface using regular dishwashing detergent and a damp sponge.
Before applying the primer, the surface is treated with putty, getting rid of scratches and chips.
For perfect evenness of the coating, it is pre-ground.

Having prepared, the remaining paint on the wall is treated with a primer. It will protect the colors of painted materials for a long time.

Before applying the primer, the surface is treated with putty, getting rid of scratches and chips.

Why prime your car before painting?

Vehicle owners often want to save money when selecting materials for upgrading the body. Painting a car without primer means violating technology. This is due not only to savings, but also to the attitude towards the car. After minor accidents and damage, the value of transport decreases. Car owners believe that they can do without a primer if they immediately apply new paint to the car. This manipulation will save from 15 to 25% of money, but this is fraught with consequences. Painting a car over old paint without a primer is a common practice for resellers. They own approximately 40% of the secondary market, which is why this method is popular.

It is impossible to understand the quality of the work done by looking at a fresh coating. Have all technological steps been followed? If a car was painted over old paint without a primer, then after 6 months the coating will begin to flake off.

It is advisable not to skimp on materials and choose the best. Then the coating will last a long time - from 7 to 10 years.

Can primer be mixed with paint?

There are different opinions on this matter:

Using a regular primer helps achieve a glossy surface. Before processing, mix paint, water, and primer in appropriate proportions;
Other masters do not recommend mixing formulations. Test the quality of the finish on a small area of the wall structure. It determines how well the product will be finished.

In rooms characterized by a high degree of humidity, the use of a red-brown primer is recommended. It is suitable for processing wood, metal and other materials.

In rooms characterized by a high degree of humidity, the use of a red-brown primer is recommended.

Primer drying time

Oil paint primer usually dries within 24 hours. Masters say that the morning is suitable for applying the special substance. During the day, the composition will be absorbed into the material, having a beneficial effect on it.

In hot conditions, the primer mass can dry out in a few hours.

Oil paint primer usually dries within 24 hours.

Primed surfaces are excellent for applying paint, extending its service life and improving the adhesion of materials.

IzhSintez Optilux

Optilux primer for wallpaper 2.5 kg

This primer evens out the color of the base and improves the adhesion of the wallpaper to the surface. Also excellent as a primer for liquid wallpaper.

Optilux primer for external/external works, ready-made, 1 l

Ready-made acrylic deep penetration primer. When dry, it creates an absolutely transparent, vapor-permeable film. Reduces the consumption of paints and other coatings. Open it and work.

Optilux primer for external/external works, ready-made, 2.5 l

Ready-made acrylic deep penetration primer. When dry, it creates an absolutely transparent, vapor-permeable film. Reduces the consumption of paints and other coatings. Open it and work.

Optilux primer for old paint 2.5 kg

Is your wall covered with oil paint or alkyd enamel that is not pleasing to the eye, but are you afraid to take on repairs due to poor adhesion, many procedures and a huge waste of time?