Polycarbonate sheets are a fairly popular and popular type of building material that is available to everyone. As practice shows, polycarbonate is most often used for the construction of greenhouses. A feature of the product is a high level of strength, low weight, reasonable cost, and if necessary, all installation work can be carried out independently, without the involvement of specialists. Despite the fact that the polymer material has a fairly wide color palette, it often becomes necessary to paint polycarbonate. That is why it is necessary to know what coloring compositions can be used in this case, how to prepare and paint.
Is it possible to paint polycarbonate?
Despite the fact that polymer products have a fairly smooth surface, they can be painted, but this will require some preparatory work. Undoubtedly, it is possible to paint polycarbonate, but to do this you need to follow a step-by-step work algorithm.
Despite the fact that polycarbonate is offered for sale in a wide range of products, there are some reasons why there is a need to paint purchased products:
- there were no polycarbonate sheets of the required shade on sale;
- there was a need to significantly reduce the intensity of direct sunlight in the case when polycarbonate was used to build a greenhouse;
- there was a need to update the appearance of the previously erected greenhouse;
- in order to make the summer cottage unique in design, polycarbonate is painted in different colors.
As practice shows, there are reasons why polycarbonate needs to be painted urgently.
Polyurethane-acrylic paints
This paint for PVC is made on a water-based, colorless base. To give the paint color, base acrylic paint and hardener are used. Such paints are used for painting large volume surfaces.
Advantages
- has no pungent odor;
- uniformity of coating;
- quick drying;
- resistance to defect formation;
- does not drain from vertical surfaces;
- independent tinting;
- special additives allow you to create different textures on the surface being painted.
Flaws
- Over time, a film may form on the paint surface;
- When painting with a spray gun, it is necessary to remove solid, undissolved particles from the paint.
How to paint polycarbonate at home
Many summer residents are interested in the question of what paint for polycarbonate can be used, what compositions can guarantee a long period of use. As practice shows, you can purchase coloring compounds in specialized stores.
In order to paint polycarbonate, it is recommended to use the following options:
- Lexan paint is the best option for painting polymer material;
- PF paint - is a fairly popular coloring composition, which is considered universal, the main advantage is the affordable price of the product, as well as a fairly quick drying process after application, the manufacturer guarantees a durable coating;
- acrylic paints that are made on the basis of water - as practice shows, this option can only be used if the packaging indicates that such paint is intended for polycarbonate; the main advantage is the complete absence of foreign odors;
- Solvent-based acrylic paints are an excellent choice for outdoor work, characterized by durability. When purchasing such a composition, it is recommended to first find information that it can be used to paint polycarbonate and has a high level of protection from low temperatures and moisture .
As you can see, the product range is quite wide, as a result of which everyone will be able to choose the appropriate option for themselves not only in terms of technical characteristics and color palette, but also in terms of product cost.
Characteristics of CM for plastic
Polycarbonate has a smooth surface, so the paint for it must have a high level of adhesion (stickiness). These are special compositions that are characterized by technical characteristics:
- resistance to UV rays from the sun;
- resistance to negative atmospheric phenomena;
- resistance to overheating during the high solstice period (spring, summer). The dye must retain its structure and color brightness even on a hot plastic surface;
- uniform coating of the surface of the plastic.
The tenacity of CM and polycarbonate will increase if the surface is pre-treated with a primer. It is recommended to apply the Otex base C primer from the Tikurilla brand, for 2.7 liters the price is 2080 rubles (770 rubles per liter). After this material, any coloring composition is applied, including water-based and acrylic. The industry produces paints and varnishes for polycarbonate, which allow you to obtain different coloring results.
How to paint polycarbonate at home
In order for the finished result to exceed all expectations, and for the painting to be as durable as possible, before you begin applying the coloring composition to the surface of the polycarbonate, it is recommended to spend several days preparing the surface of the polymer material.
You will have to paint polycarbonate sheets or a finished structure in several stages:
- The first stage is the initial one, during which you will need to thoroughly wash the surface of the polycarbonate from dust and dirt. A soap solution is perfect for these purposes. After the work is completed, the material is rinsed with a hose and given some time to dry completely. In the case when it is planned to carry out all the work in the summer, a few hours will be enough, and in low temperatures it is worth using an electric pump.
- After the cleaned surface has completely dried, you will need to sand the polycarbonate with sandpaper before painting. This approach ensures a fairly easy and uniform application of the coloring composition. Paint adheres much better to rough surfaces.
- After the surface has been treated with sandpaper, it is recommended to treat the sheets with special alcohol-based products, which can degrease the polymer.
- The final preparatory stage is the priming of polymer products. By applying a layer of primer, it is possible to prevent the appearance of smudges during painting. After the primer has been treated, you should wait until it dries completely.
- At the final stage, you will have to paint the building material. Many experts recommend using a roller when applying paint. The paint must first be poured into a special tray in a small amount, and then using a roller, apply the composition evenly over the entire plane of the polycarbonate. You can use a spray bottle.
As you can see, these works do not take much time. In addition, if necessary, they can be carried out independently, without the involvement of specialists. In the event that there is a need to paint a small amount, you can use a regular brush.
Attention! For hard-to-reach places, it is recommended to use a special brush that has a long curved handle. If you need to protect the structure from the sun, you can paint polycarbonate with special compounds.
Preparing the base for painting
Painting of polycarbonate is carried out after preparatory work. Only then will the coating be even, high quality and durable.
- At the first stage, the plastic base is washed with a solution of water and soap, dirt and dust are removed. The polycarbonate is rinsed with liquid under pressure. The surface dries naturally for a couple of hours or with a stream of air from an electric pump.
- Before painting the polycarbonate, the base is treated with zero sandpaper. Roughness provides tenacity to the paint.
- The sheets are degreased with alcohol.
- Priming is the final preparatory step. Thanks to it, there will be no leaks when the CM dries. The decorating composition is applied to a dry primer.
Important: depending on the composition of the CM, the primer is selected. Spray paint already contains a primer.
- The base is painted with a roller, hard-to-reach places are painted with a brush with a long curved handle.
- CM is applied whose purpose is: for work in the open air. It has light resistance, moisture-repellent properties and resistance to low temperatures.
In the sunny summer months, a coat of paint dries in a maximum of 3 hours. The structure is then ready for use. It’s not difficult to do all the stages of preparation and coloring yourself. CM from foreign manufacturers are more expensive, but their technical characteristics and service life are longer.
Experts and specialized forums on the Internet are often asked whether it is possible to paint cellular polycarbonate in order to reduce the heating of the air under the roof (canopy) by the sun. The answer to this question is clear: yes, undoubtedly. The same applies to a monolithic sheet. This improves the appearance and aesthetics, and creates a reliable protective layer from direct exposure to ultraviolet sunlight.
Polycarbonate is painted both to protect it from sun exposure and for other reasons:
– the desire to change the color or make it more saturated with weak pigment;
– roofing renewal;
– shading of a greenhouse covered with transparent sheets;
– applying artistic painting to create a unique design of the house (gazebo).
Polycarbonate is painted using aerosol sprayers, a spray gun, a roller or a paint brush, depending on the type of paint, the surface area of the roof and personal choice.
Tips and tricks for painting polycarbonate
Before you start painting polycarbonate, you must take into account that hammer and finely dispersed paints should not be used for the work. This is due to the fact that these compositions have a rather low level of stability and, under the influence of the environment, begin to quickly undergo a process of destruction.
An excellent option is to choose PF paint, but before you start painting plastic, you will need to first prepare the surface. Otherwise, the paint may lie unevenly and after a certain period of time will begin to crack and fall off.
Important! An excellent solution would be to choose imported compounds, but it is important to understand that their cost, as well as technical characteristics and service life, will be much higher.
Aerosol paints
Acrylic spray paint for PVC is especially suitable for painting plastic products. The container protects the paint from air penetration and the formation of a film on the surface. On the labels of such paints you can find the words: “Plastic” or “Multi-Surface”.
Advantages
- high level of adhesion;
- ideal for painting small parts and hard-to-reach places;
- does not require additional tools;
- creates an even and smooth coating;
- dries quickly;
- economical to use.
Flaws
- If cleaning is not done in a timely manner, the nozzle may dry out;
- spray painting requires certain skills.
Possible problems
When working with compositions containing metal powder, some difficulties arise. The film turns out uneven and the coloring has to be repeated. Typical situations:
- The coating layer is too thick; after drying, an “orange peel”, porosity, and smudges form;
- Poor penetration of the powder and base into the structure of the surface being painted is associated with poor preparation of the parts;
- The reflector will be damaged if you cover it with thermal paint, which becomes dull.
When choosing cans, you should carefully read the manufacturer’s recommendations and adhere to the paint application technology.
Poor penetration of the powder and base into the structure of the surface being painted is associated with poor preparation of the parts.
Many compositions with amazing shades and properties are produced for painting decorative elements with chrome. When restoring parts, it is better to give preference to professional canned paints. The glossy shine of chrome parts can be restored flawlessly.
Review of the best brands
Greenhouse lighting: features and types
Polyurethane two-component compositions from foreign manufacturers are distinguished by their high strength.
Cosmo SL-660.120
German glue for plastic windows is white in color and has a thick consistency, does not stand out on light panels, and does not turn yellow over time. Sets in 60 seconds.
Advantages and disadvantages
dries quickly; does not form a crust, plastic; does not crack in the sun.
unpleasant odor; after opening it thickens in the tube; The nose gets clogged quickly.
If you work in a ventilated area, the smell is almost unnoticeable. To prevent a plug from forming in the spout, a nail is inserted into it.
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KM CRYSTAL CLEAR
A two-component transparent polyurethane composition is intended for molding decorative elements and optical lenses. Manufacturer: USA.
Advantages and disadvantages
does not turn yellow in the sun; lasting.
darkens with time; Vacuum degassing is required, otherwise bubbles will form; releases toxic fumes.
Crystal clear polyurethane is intended for professional use.
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PolyCast
Two-component plastic made in Italy is used for the manufacture of sculptures, models, jewelry and products with imitation bronze. The composition is mixed and poured into molds. The plastic hardens at room temperature in 10-20 minutes. White color.
Advantages and disadvantages
after hardening, durable parts are obtained; suitable for coloring.
narrow scope of application; in liquid form is hazardous to health.
PolyCast plastic is used only for pouring into molds. It is not suitable for household purposes.
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NATICAST
Italian product from a series of polyurethanes for figure casting. 200 grams of the mixture hardens in 5 minutes when mixed by hand.
Advantages and disadvantages
allows you to create figures with fine details; allows you to create figures with fine details;
contains a toxic substance polyol; for industrial use only.
High-strength structural elements and milling plates are cast from Naticast plastic.
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EasyFlo from Polytek
The American product is used in decorative arts and industry for the manufacture of plastic parts, models and structures.
Advantages and disadvantages
has low viscosity and does not require degassing; mixes easily; wear-resistant; can be painted; resistant to weak solvents.
the composition hardens very quickly; not for household use.
The components are measured in separate containers, poured into a common container and mixed thoroughly.
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Axson F160 from Axson
The French product is considered one of the best polyurethane plastics in the world for model casting. The two components are mixed by weight in a 1:1 ratio.
Advantages and disadvantages
no odor; product strength; ease of painting; low viscosity and foaming.
when mixing by volume, the quality of the products decreases; a precipitate forms in the mixture.
Plastic is suitable for casting blanks for milling, figurines, and decorative magnets. Shake the composition well before pouring.
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JETICAST
Chinese-made polyurethane is also intended for the manufacture of models, furniture decor, wood and metal imitations.
Advantages and disadvantages
does not form bubbles; hardens quickly; does not have a pungent odor.
the mixture gives a precipitate; You need to work in protective gloves and goggles, in a ventilated area.
During the cold season, after transportation, the components must be brought to room temperature before mixing.
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Enamel/model paint
How to paint PVC panels other than traditional paint designed specifically for use on plastic.
Advantages
- durable coating with good overlap of the previous layer;
- fine finely dispersed pigment for uniform coverage;
- ideal for small drawings;
- gives the surface gloss;
- The dried coating is resistant to water and acrylic solvents.
Flaws
- long drying time;
- strong pungent odor;
- the use of solvent to thin the paint must be used with caution for plastics;
- not recommended for surfaces with a large painted area;
- may leave brush marks;
- Requires primer and final varnish.
Source: https://zuker.by/helpful/articles/kak-pokrasit-pvkh/
