How to paint concrete walls, and is finishing needed for painting: is it possible to paint without plaster and putty

Painting concrete walls can change a room and give it a contemporary, clean appearance. It is crucial to ascertain whether painting on concrete can be done directly or if further preparation is required before using a brush. Many people ask whether painting can be done without the use of plaster and putty.

In actuality, concrete walls can have small cracks, rough spots, or uneven surfaces even though they are strong and long-lasting. These imperfections may have an impact on how the paint turns out. Depending on the desired finish and the state of the wall, you can choose between plaster and putty.

The advantages of applying plaster and putty first as well as the drawbacks of painting straight on concrete will be discussed in this article. You’ll be in a better position to get the wall style you desire if you know about these options.

Step	Description
1. Surface Inspection	Check the concrete for cracks, holes, or rough spots. Smooth surfaces are better for painting.
2. Cleaning	Remove dust, dirt, and any loose material. Clean surfaces help paint adhere better.
3. Primer Application	Apply a concrete primer to seal the surface and improve paint adhesion.
4. Painting Without Plaster	You can paint directly on the concrete, but it may show imperfections and absorb more paint.
5. Using Plaster/Putty	Applying plaster or putty smooths the surface, resulting in a cleaner finish with fewer imperfections.
6. Painting	Once the surface is prepared, paint with your chosen color. Multiple coats may be necessary.

How to paint concrete walls: tips and recommendations

Navigating pages

Painting concrete components involves a methodical surface preparation process with products that help you preserve the integrity of the concrete slab and the finishing coating for an extended period of time. Considerations regarding the function of the surface to be painted and the intended use of the space must be made when selecting paint.

Preparation

Applying a sealant is the first step in getting concrete structures ready for painting. One layer of a unique mixture made for concrete is applied, and it dries in a day. You can erect a barrier to prevent mold microbes from penetrating thanks to the sealant.

Priming is the next step in the work process. Concrete primers are light-colored, which is important for later inspection to ensure that the surface is evenly covered. If not, each layer of primer is reapplied and allowed to dry for a full day.

Should there be fissures

The best way to fix surface flaws like cracks, chips, and drop-shaped recesses is to use a trowel or spatula to apply a specific repair solution (putty or cement).

This will increase the coating’s durability by enabling later coats of paint and primer to lie in an even layer.

It is necessary to sandpaper the surface after applying the mixture to cracks in order to eliminate any extra roughness.

Without finishing

The concrete surface should be cleaned to get rid of dust and debris before painting because these things reduce the lifespan of paint. In the event of severe contamination, you can use a rough brush or rag to clean the concrete with a soapy solution.

If a protective coating isn’t applied to concrete, rust will eventually form and needs to be removed before painting.

Rusty deposits are easily removed with copper sulfate solution.

If the affected area is too big, rosin varnish treatment is required.

With finishing

To get rid of outdated finishes from a concrete surface, there are three primary methods:

1. sandblasting is a hardware method that requires skill and time for subsequent drying;
2. alkali solution – necessary to remove old paint;
3. using a spatula is a mechanical method of scraping off the layer, time-consuming, but giving an easily controlled result.

The best course of action in the event that the concrete wall is coated in soot or dirt would be to wash the unclean surface with a soda ash solution.

Interior and exterior work: differences

There are two types of concrete paint: exterior and interior.

• Surface temperature. Concrete located indoors is little susceptible to temperature changes, and when applying paint from the outside, two conditions must be strictly observed: surface temperature – above 5 ° C; concrete should not be overheated by direct sunlight.
• Work time. If interior work is carried out according to the general repair schedule, then for painting external surfaces it is necessary to choose a time of day when the appearance of morning or evening dew is reduced to zero.

The right weather must be chosen for painting external concrete surfaces; it should be cloudy but not raining.

Although painting concrete walls is a simple process, adequate preparation is necessary to achieve a smooth, long-lasting finish. Although concrete can be painted directly, omitting the putty and plaster can result in uneven texture and poor adhesion. Prior to painting, cracks must be filled in and the surface smoothed with putty or plaster. If not, there’s a chance the paint won’t cover well and the outcome won’t be satisfactory. For concrete walls to have a clean, polished paint job, proper preparation is essential.

Painting the walls inside: features

Paint can be used on primed concrete surfaces or on walls that have already been filled.

Paint techniques without putty

Plaster is not applied when painting concrete, allowing the coating’s structure to remain visible.

Paint in tones of gray and sand is typically chosen for interiors because concrete surfaces are used to accentuate the room’s overall masculine and cold style.

Is it possible to paint without plaster

While it is possible to paint without first puttying, it is crucial to select the appropriate impregnation and primer compositions as they will stabilize the paint layers applied to the concrete wall.

Painting in an apartment without preparation

Some contemporary paints can be applied without the need for a base. Although they are not very strong, you can quickly alter the surroundings with them. One drawback of all-in-one paint is that the sprayer needs to be filled.

What kind of finish should there be for painting on concrete walls

With concrete, you can create a plaster finishing layer that mimics 3D drawings, frescoes, brickwork, and any partial finishing needed for interior design. For the closest resemblance to the original in these situations, paint is typically applied with a thin brush after the wall texture has fully dried.

How to paint without leveling

One common issue that comes up when painting walls is that the unevenness of the wall compromises the coating’s integrity, which causes the paint to crack. The right choice of building materials can easily clear up this misunderstanding:

• paint roller – should be marked as a tool "for uneven walls";
• paint – it is worth choosing a textured one that imitates waves, strokes, wood structure, etc.

Choosing paint indoors

Since the selection of contemporary building and finishing materials keeps growing with each passing season, store consultants will provide the best recommendations based on the room’s dimensions, intended use, and client requests for interior design. Paints chosen for painting concrete should have clear usage instructions in addition to an appropriate label.

The three paint kinds that are most frequently used.

1. Epoxy. Distinguished by wear resistance. Has a rich color, protects walls from moisture. Painting work should be carried out in rooms with good ventilation. Cracks may appear over time.
2. Acrylic. Has an economical consumption, sometimes one layer is enough. Ecologically harmless. Dries quickly, resistant to moisture. The only drawback is a short service life.
3. Glossy. Ecologically clean product, but at the same time sensitive to mechanical damage.

Professional guidance:

• Painting work should be carried out in protective glasses. When using strong-smelling paint, wear a respirator.
• Before applying paint, you need to prepare the tools: fluff up the brushes and check if they are losing their bristles; soak the roller under a strong stream of water, then squeeze it out and smooth out the pile.
• To protect the floor and ceiling at the joints with the wall, use masking tape, which is peeled off after painting. If necessary, individual areas are then worked on with a thin brush.
• When applying paint, it is important to remember that each layer should be as thin as possible. A wall painted in three thin layers looks better than in one excessively thick layer that forms streaks.
• As a rule, concrete walls are puttied in two layers: the first is gypsum or cement plaster, then the finishing putty. This method allows you to achieve a perfectly smooth coating.

Painting concrete surfaces is a simple task that can be accomplished by both novice and seasoned finishers. Painting requires patience to achieve a uniform and long-lasting finish as each coat of paint must dry completely before applying the next.

It’s vital to realize the preparation required before painting concrete walls because it can be a simple and affordable way to update a room. Although concrete can be painted directly, improper finishing can result in uneven paint application and a less durable surface. Paint can eventually chip or peel off unfinished concrete due to its rough texture.

It is highly recommended to apply plaster or putty before painting if you want a smooth and durable finish. By covering up any cracks or other flaws in the concrete, these materials aid in the creation of an even surface. This not only makes the painted wall look better, but it also makes the paint stick better and last longer.

Nevertheless, you can omit the finishing steps if you’re on a tight budget or want a more unpolished, industrial aesthetic. Just be aware that the paint may not last as long and the finished product will appear more textured. In the end, the decision is based on the concrete’s state and your preferred aesthetic.

Video on the topic

Garage repair #5: Painting walls.

Putty on smooth concrete (monolith). Is betonkontakt necessary.

Preparing walls for painting. Without stripping. Without putty.

NO HASSLE and unnecessary LEVELING How to paint CONCRETE WALLS new trend INTERIOR Budget and COOL

painting on plaster!!!! it is possible???!

Painting plaster. Saving on wall paint. Effective and cheap. Ideal walls

Secrets of painting walls without putty

Puttying walls!Materials from @danogips7574