How and with what to paint polyurethane indoors. How to paint polyurethane stucco molding? Features of painting polyurethane stucco molding

Polyurethane is quite common finishing material, from which all kinds of moldings, baseboards and others are mainly made decorative items, externally resembling stucco. However, for all these decorative elements to be truly attractive and practical, they need to be painted.

As a rule, this procedure causes difficulties for novice craftsmen, which are associated with the choice of the coloring composition and the technology for its application, so next we will look at how and with what to paint polyurethane stucco molding.

Painting polyurethane stucco

Why paint polyurethane

Before moving on to choosing paints and applying them, you should figure out whether this procedure is so important that you bother with it?

Experts have several arguments in this regard:

Of course, polyurethane itself looks good, however, it attracts dust and dirt well, which is difficult to remove from porous stucco. Caring for a painted surface is much easier.
If we are talking about baseboards and moldings, then no matter how carefully their installation is carried out, there will definitely remain joints between the panels, especially at the corners. You can get rid of them using putty, which is hidden under a layer of paint.
Well, the last thing is of course decorative properties painted surface. Finished stucco looks much more attractive, not to mention the ability to give the product any shade or simply paint it, for example, bronze or gold.

These arguments are quite enough to accept correct solution in favor of painting.

Paint selection

The choice of dye for polyurethane should be approached very responsibly, since the material dissolves when white spirit or other similar solvents come into contact with it. Therefore, paints must be water-based.

These include following types compositions:

Acrylic;
Latex;
Silicone;
Mosaic.

Now let’s take a closer look at the features and properties of these dyes.

Acrylic paint (do not be confused - these are not fire-retardant paints for metal Polistil)

Acrylic coatings

Most often, acrylic paint, which is based on acrylic resins, is used for finishing polyurethane.

The high popularity of this coating is due to the following reasons:

The paint is absolutely odorless and harmless to the body, like all other water-dispersed compositions. Therefore, you can paint in residential areas without fear for your health.
The coating is matte, which allows you to give the finished surface the appearance of gypsum stucco.
This polyurethane paint holds up well wet cleaning.
It is resistant to temperature changes.
Forms a coating that is quite resistant to mechanical stress.
It is durable.
Low price compared to other types of water-dispersion compositions.

Thus, when choosing what to paint polyurethane foam with, you can easily opt for acrylic paint.

Advice!
Since polyurethane is a flammable material, it is often coated with fire-retardant acrylic paints.
However, in order to achieve reliable passive fire safety, it is necessary to treat other finishing surfaces, as well as all metal communications, with fire retardants.
For the latter, you can use special fire-retardant paints for metal Polistil.

Latex paint

Latex coatings also have excellent performance qualities; in particular, they are distinguished by:

Moisture resistance – the coating is not afraid of direct contact with water.
High wear resistance.
Looks attractive - unlike acrylic coating, can form a glossy surface.

Silicone paint

Silicone

Silicone paint for polyurethane stucco has the best performance qualities. Its main advantage is that it is endowed with dirt-repellent properties, so it practically does not become dirty. In addition, the composition has all the advantages of both materials discussed above.

The only disadvantage of silicone coating is its high cost.

Painting technology

As a rule, the most questions arise when painting polyurethane moldings and ceiling plinths yourself.

There are two options for doing this job:

Before installation - this option is, of course, much simpler than finishing after installation. However, in this case it will not be possible to hide the gaps at the joints.
After installation - this process more complex, but on the other hand, it allows you to pre-fill and get a continuous surface.

More often they prefer the second option, so we will consider it.

Puttying polyurethane stucco

Preparation

Before painting polyurethane stucco, you should prepare the base.

The work is performed in this order:

The surface must be thoroughly wiped from dust.
Next, the cracks are sealed with putty. In this case, you should also pay attention to the gaps between the wall and the molding being finished.
Then all surfaces adjacent to the molding must be protected from contamination with paint; for this you can use masking tape. Furniture and floors should be covered with oilcloth.
The final stage of preparation is to coat the polyurethane with a primer, which will improve adhesion.

In the photo - painting polyurethane baseboard brush

Painting

After preparing the surface, you can begin painting. For these purposes, it is best to use an ordinary brush.

The instructions look like this:

The first step is to prepare the paint - stir the composition and, if necessary, add color.
The coating is then applied in an even, thin layer.
After the first layer of paint has dried, the procedure can be repeated again.

Advice!
As a rule, painting polyurethane moldings is part of the complete finishing of the room.
In this case, it is necessary to pay attention to the quality of paint compositions for other surfaces so that you do not have to return to this procedure ahead of time.
This is especially true for metal communications, which are susceptible to corrosion, so you need to use reliable coatings for them, such as Zinga electrically conductive paint.

Conclusion

Finishing polyurethane stucco is not difficult. The main thing is to choose the right paint, made exclusively with water, and adhere to the above-described technology for its application. Even masters who have never done anything like this are quite capable of doing this work.

For more information on this topic, watch the video in this article.

We offer water-based paints - quick-drying non-stick coating PPU-1, F-RA, F-RDS.

Scope of application: intended for covering models made of foamed polystyrene or polymethyl methacrylate (copolymer).

Non-stick coatings have certain properties

drying of the first layer 30-40 minutes (t > 30°C);
Application options: watering from a container (ladle, bucket), brushing, dipping;
thin layer: first - 0.3-0.5 mm, second - 0.5-1 mm;
In addition to the necessary gas permeability, coatings have the ability to absorb the liquid phase (a product of the destruction of polystyrene), which greatly helps to eliminate carbon defects.

subject to all technological conditions does not form a burn.

For large and medium-sized steel workpieces it is recommended F-RDS, having higher fire resistance. Paints are supplied as powder concentrates.

Non-stick paint has the above properties and has the characteristics inherent in high-quality coatings:

excellent hiding power;
good grip on any surface;
smooth coating- without cracks, cavities and other defects after drying;
extra high gas permeability PPU-1, average- F-RDS and F-RA;
Operating temperature range PPU-1 and F-RA up to 1600 o C, F-RDS - up to 2100 o C.

Features of use and storage of PPU-1, F-RDS

It is allowed to store diluted non-stick high pressure paint under conditions negative temperatures(up to - 50°C). Freeze-defrost does not provide negative influence on the technological properties of the coating.

The principle of preparation and use of powder concentrate is similar to analogues of non-stick paints. When using a concentrate weighing 1 kg, 1.5-2 kg of finished coating is obtained.

It should be noted that high degree homogeneity of ready-to-use paint, as a result of the mixing process, is one of the most important conditions, contributing to the necessary quality indicators of the coating, therefore even after preparing the paint for work shift the material must be stirred periodically. Visual sign high-quality prepared material is the absence of paint dripping from the model after its application. However, the applied layer may be too thick, which will lead to high paint consumption.

Coating components are environmentally friendly.

Polyurethane is a fairly common finishing material, from which all kinds of moldings, baseboards and other decorative products that look like stucco are made. However, for all these decorative elements to be truly attractive and practical, they need to be painted.

Why paint polyurethane

Before moving on to choosing paints and applying them, you should figure out whether this procedure is so important that you bother with it?

Experts have several arguments in this regard:

Of course, polyurethane itself looks good, however, it attracts dust and dirt well, which is difficult to remove from porous stucco. Caring for a painted surface is much easier.
If we are talking about baseboards and moldings, then no matter how carefully their installation is carried out, there will definitely remain joints between the panels, especially at the corners. You can get rid of them using.
And the last thing is, of course, the decorative properties of the painted surface. Finished stucco looks much more attractive, not to mention the ability to give the product any shade or simply paint it, for example, bronze or gold.

These arguments are quite enough to make the right decision in favor of painting.