Painting facades mdf. Do-it-yourself MDF painting Technology for painting furniture facades from MDF

- it is laborious, and subject to all technologies, it will last up to 10 days. But if the price of painting MDF scares you away, you can try painting MDF with your own hands. How and how to paint MDF at home?

To paint MDF at home, you will need putty, a primer, the actual paint (paintwork material - LKM), patina and acrylic lacquer(for matt surfaces) or gloss varnish and polishing pastes (for glossy surfaces).

The process of painting MDF includes several stages, and all stages alternate with drying and grinding

putty

Primer

Painting

Patination or varnishing and polishing MDF

Preparing MDF for painting

Before painting MDF, it is necessary to prepare the surface of the plate itself. What does the preparation of MDF boards for painting include:

1)Grinding MDF to prepare the surface of the plate for the primer. Thanks to grinding with a grain of 120-240, firstly, surface irregularities are polished, and secondly, a layer of paraffin is ground off, which would prevent the primer and paint from soaking into the wood. On complex bends, it is better to grind MDF with an emery sponge, or completely abandon grinding thin cutters in the initial stages. Still, MDF is a rather fragile material, it is better not to crawl it once again.

2) Before painting MDF, you need to make sure that the material does not need to be puttied, for example, you need large dents, edges, or gaps between parts if the product consists of several elements. For this purpose, it is best acrylic putty- It is quite elastic and does not crack over time. After drying, its remnants are carefully removed, the MDF surface is sanded for painting.

3)MDF primer before painting. As a rule, MDF is primed twice before painting in order to give an ideal smoothness to the surface of the plate. At the first stage of priming MDF, the primer-insulator is sprayed with a spray gun (nozzle - from 1.6 to 2.4 mm, 2-4 atm.) at the rate of 90-100 grams / "square". This primer should prevent the pile of the MDF board from rising up and absorbing paint or varnish: the primer gets into the loose areas of the MDF, and after application the paint will not sag. After the primer dries, the surface is sanded with sandpaper or an emery sponge, but very carefully - it is easy to wipe a thin layer of soil to the MDF board.

The second primer is carried out with a white polyurethane primer at a rate of at least 150 grams/square. The soil layer should be given time to dry - 12-24 hours, and then sanded. If the primer spools are visible on the skin, it means that it has not dried yet.

How can MDF be primed before painting? A mixture of the paintwork of your choice for painting with the addition of water. For example: 25% enamel on water based, 25% varnish, 50% water.

If we talk about general recommendations on the MDF primer, then it is carried out with an airbrush, starting with the most complex elements of the cutters, then moving on to the edge, and then to the rest of the surface. First, the part is covered along, then across, overlapping.

Painting MDF

MDF painting technology is approximately the same as the primer technology. It is easiest to paint MDF with an airbrush (nozzle - 1.6-2 mm, pressure - 2-4 atm.), But in the absence of a roller or brush, it will do. The painting parameters will directly depend on the specific coating: the interval for applying layers, their number, recommended air pressure and nozzle diameter, paint consumption (60-200 grams / "square"), spray method. This information can be found in the instructions.

How to paint MDF? Polyurethane, water-based enamels are best suited for painting MDF - they do not have a strong odor, dry quickly, are relatively safe, resistant to ultraviolet radiation. Although you can take alkyd, acrylic or oil paints.

If there are smudges of paint on the painted surface, they should be removed with a clerical knife; when small debris, villi, midges get in, they are immediately removed with a small sharp object. Irregularities are carefully polished after drying. By the way, grinding after applying all layers of paintwork materials will be simpler - enamel or paint lays down in a thick layer and levels the surface.

Once you're behind, it's time to apply either varnish (to give a glossy surface) or patina (to give texture to matte surfaces).

Coating MDF with patina

As a rule, MDF facades are patinated with complex cutters to emphasize their texture. The composition of the patina is applied directly to the dried layer of paint using the same spray gun, brush, roller, swab, etc. After the patina on the MDF dries, the surface is sanded again, the patina is covered with a layer of acrylic matte varnish at the rate of about 150 grams / "square" and dried for a day. Finished MDF painting.

Lacquering MDF to a glossy finish

Glossy varnish is applied to the painted MDF in two layers at intervals according to the instructions, and at the rate of 130-150 grams / "square". Lacquered MDF is dried for at least a day, after which they proceed to the final sanding, moving from coarser to finer grit. To prevent the varnish particles from overheating and rolling off during grinding, the painted MDF surface is sprayed with water from time to time. In another week, the MDF will be ready for final polishing. MDF with a grinder, abrasive and non-abrasive pastes.

So, if you are still wondering: “Is it possible to paint MDF”, we answer - it is possible, but difficult. Especially if you are a beginner painter, or your MDF is of poor quality, or you have little time for all these drying times. In any case, we told you how to paint MDF with your own hands, and do it yourself or trust the professionals - the choice is yours.

We bring to your attention a video on how MDF is painted by professionals.

Tatyana Kuzmenko, member of the editorial board of the Sobcorrespondent of the online publication "AtmWood. Wood-industrial bulletin"

The abbreviation MDF in the last two decades has firmly entered our everyday life, since this type of fiberboard is used in the furniture industry, and for the manufacture of doors, and as a wall material. This is a great alternative to natural wood, the price of which remains high.

Your attention will be presented useful information about this material: how it is produced, where it is used, how MDF panels can be painted, and much more. A great addition to our story will be the video in this article on the topic: "Painted MDF facades."

Most of those who plan to build country house, make repairs or make built-in furniture on your own, the question is: “What is the difference between MDF and chipboard?”. In appearance, they are very similar, but the production technologies are different and, accordingly, performance also differ.

For comparison, you are offered a small instruction:

Differences	Chipboard	MDF
Raw materials for production	Large shavings of low-value wood	Fine sawdust - woodworking industry waste, as well as wood intended for felling.
Technology difference	Pressing under hot steam. In production, formaldehyde is used - a very toxic substance.	Pressing under the influence high pressure and temperature. As binder they use paraffin and woody humus, which is called lingin. So, MDF is an environmentally friendly material.
Application	Only in dry rooms. As a rule, these are floors, partitions, built-in furniture. It is not recommended to use in bedrooms and children's rooms.	Can be used in rooms with humidity levels up to 80%. Since there is no MDF in the composition toxic substances, it can be used for decoration of premises for any purpose.

Since MDF has a denser structure and is able to withstand more high level humidity, over time, it practically does not deform. That is why in the production of cabinet and upholstered furniture factories use only MDF today. The technology for painting MDF and chipboard facades is similar, and we will talk about it in a separate chapter.

Note! In this case, we are talking about furniture and built-in interior facades. Neither material is used to finish the exterior walls! Facades of houses are sheathed OSB boards which are completely impervious to moisture. They obtain such properties due to the presence of polymer resins in the composition.

Wood fiber boards medium density, namely the so-called MDF, are in demand not only in the furniture industry, but also in the production of interior finishing materials. In addition to wall and ceiling panels, these are also molded products: slats, platbands, MDF plinth for painting.

And how great laminate floors look! But what can I say: look at the picture above, and it immediately becomes clear that without this material today, nowhere.

Sizes and face covering

Manufacturers of sheet MDF offer the material of the most different size and thickness. There are no uniform standards in the world, and each enterprise determines independently which standard sizes to produce. Ultimately, it all depends on the purpose of the sheets and consumer demand.

• If you decide to make a wardrobe, then for the back wall you can take all-pressed sheets with a thickness of only 3 mm, for the sidewalls and furniture facade, 10 mm is already required. To build interior partition, you need a material with a thickness of 12-16 mm, and, for example, to build a rack - 24 mm.
• Here is such a wide range. The dimensions of the sheets also differ, but not so much. On average, the width and length of the sheets is: 1220 * 2440 mm; 1830*2440mm; 2070*2800 mm. As you can see, the dimensions allow, if necessary, to block the walls along the entire height.

• As for finishing their surface, the buyer always has a choice: do-it-yourself MDF painting or using sheets with a ready-made factory coating - and, by the way, it can be not only painted. Decorative cladding sheet MDF is also carried out by pasting it PVC film, lamination and veneering.
• When using such sheets, for example, for the manufacture of built-in furniture, painting MDF facades is not required at all. If you look closely at the photo above, you can see that even the edges have already been processed, and when using such a sheathing material, it remains only to decorate the cuts.

MDF surface decor can be not only imitation various breeds wood. Wall material stylized as stone, plaster or brickwork, makes it possible to create interesting compositions in the interior, one of which we see in the above example. Sheets intended for finishing wet rooms are protected by a melamine coating.

Some features of wall cladding

Before talking about whether it is possible to paint MDF panels and how to do it: with enamel or water-dispersion compositions, we will briefly talk about the nuances of installation. After all, errors can greatly affect the geometry of the skin or structural element and, accordingly, will nullify all your work.

• To prevent this from happening, it is very important that the MDF be adapted to the microclimate of the room in which it will be used before installation. It cannot be used immediately after delivery from the store and unloading. In a normal dry room, it should lie down for a day. If you have to sheathe a basement or an unheated attic, it takes at least 48 hours to adapt.

Mounting options

At this time, you can start preparing the surface of the walls, the degree of which depends on the chosen installation option. Wall decoration with sheet MDF can be done in two ways: frame and glue.

In the first case, the material is mounted on the crate. At the same time, special preparation is not required, and if the walls are uneven, the frame elements are installed on direct suspensions.

• In order to be able to mount the panels on glue, the walls must be well leveled, sanded, cleaned of dust and primed. If sheet material is used in the installation, it is glued to the base base. Small format panels can also be glued to plasterboard sheathing and even to the surface of wooden battens.

• The sawing of sheet and modular material is carried out manually or electrically. cutting tool. In order not to damage the factory decorative coating of the sheets, the following nuances must be taken into account when cutting: when using a hacksaw, you should cut from the front side, and when using circular saw- from the inside.

Note! During installation, it is very important to leave a technological gap of 2 cm between the casing and the ceiling. This is especially true for bathrooms and kitchens, where the temperature and humidity of the air changes several times a day. In the absence of a gap, the expanded material will rest against the ceiling and, accordingly, deform. For the same reason, in these rooms, it is better to install on the crate, since it also provides a ventilated space.

• Long and classic Wall panels, as a rule, do not require any surface refinement, including sealing of seams. After sheathing the walls with sheet MDF, the joints are sealed by filling with a special compound, and then closed with plastic moldings.
• Sheets with a factory decorative coating can also be mounted with a gap, which looks very interesting. The necessary distance between the ends of the panels is provided by special cruciform plastic inserts. If the sheathing is made with ordinary sheet material that does not have decorative coating, then its surface must still be prepared.

Since MDF has high density and enough smooth surface, it is not necessary to putty. It is simply lightly sanded with fine sandpaper and, having cleaned of dust, is treated with a pore-filling primer. But what kind of paint for MDF facades is best suited and how to apply it correctly, we will tell in the next chapter.

What and how to paint MDF

First of all, sheet MDF is constructive material. Along with drywall, it is used for interior wall cladding of frame-panel houses. But compared to GKL, MDF is more durable and has high thermal insulation properties, so there is every reason to use it.

• Is it possible to paint MDF panels so that they are indistinguishable from a plastered surface? Yes, you certainly may! Take a look at the example below and you will see a beautifully painted interior. frame house made in fachwerk style.

In this case, the load-bearing structures of the house are involved in the design, but even if this is not possible, moldings from the same material as the sheathing can be used for decorative wall paneling. The main thing is to invent interesting design, and then you can already think about how to paint MDF.

MDF products for painting

As for natural wood, and for all its derivatives - whether it be chipboard, OSB or MDF, similar types of paints are used. Just before painting MDF doors or the same panels, make sure the paint is designed for wood or is an all-purpose paint. In this case, the label will say: "For all types of surfaces."

• The main thing here is not even the type of paint, but the correct primer. It is important that it be made from the same substance as the paint. That is, if used polyurethane paint for MDF, then the primer must also be polyurethane.

• Paint for MDF doors, as well as molding material, which are called "for painting", is selected in accordance with the type of primer already applied at the factory. Most often, this acrylic paint-primer white color, replacing not only adhesive impregnation, but also the first layer of paint. So, for finishing painting, you also need to purchase acrylic paint.
• But its color can be any, and not necessarily white. In general, doors primed for painting are a budget option. They are chosen mainly because of the lowest cost. In such a situation, the question arises before a person: “How to paint MDF doors so that the coating looks no worse than in the factory version?”.
• If you want to receive quality surface, you need to forget about brushes and rollers, and use an airbrush. Painting MDF panels, facades of home-made furniture and door blocks will turn out in this case the most uniform and accurate.

• This is especially true for doors - it is generally better to paint them first, and then install them. Firstly, they won’t get dirty with paint door hinges, accessories and especially glazing. And secondly, when the door is installed, it is much more difficult to paint over its ends, layout, panels.

It is good if white paint is applied on white ground. And if it is a different color, in some places bald spots will still be visible.

With a brush, it is generally difficult to paint even a smooth surface with high quality - what can we say about such a design as a door. On request: "MDF: painting technology" you can watch one or two videos, where this process is explained and shown in an accessible way.

The nuances of painting work

It is much easier, of course, to paint an MDF product that is already prepared at the factory for painting. And if you have to ennoble sheet sheathing that does not have a decorative coating? We have already mentioned that such a surface is polished before painting.

Why is this done if the surface of the MDF is already smooth:

• The fact is that during the production process the material is covered with a protective wax layer. This is what needs to be removed, otherwise the front surface will not have any adhesion to either the primer or the paint. Grinding of sheathing material is best done not with sandpaper, but with a machine - but it all depends on the amount of work.

• It is very important that this be done with high quality, over the entire plane of the sheet. Otherwise, when painting, it will turn out that in some places the paint does not stick to the base. If you decide with manual router emboss on panels Special attention when grinding and priming, you need to give these places.
• In general, before painting MDF facades, they first apply primer to the relief or overhead elements, then prime the edges, and only after that they begin to cover the entire plane of the product. When working with the spray gun, the nozzle should move in parallel rows, with a fifty percent overlap on each other.
• First, longitudinal rows are applied, then transverse ones. Apply in the same order paint coatings. If you need to paint the facade of built-in furniture, then this is done on both sides. Paint first backside, and after it dries, - facial.

• Next, you need to let the product dry completely, then it will have to be sanded again to remove the pile that has risen during the primer. In this case, the most important thing is to correctly calculate the effort and not completely remove the soil layer, having reached the MDF. At the next stage, a covering paint-primer is applied.

For painting furniture facades paints based on polyurethane are used. They create the most durable surface, and after all, furniture is subjected to constant mechanical influences. Well, for wall cladding it is best to use water-based paints - especially since they do not have such a toxic smell as polyurethane enamels.

Greetings comrades. I won’t discover America if I say that MDF furniture, wall panels and other forms of application this material firmly entered our lives. But what if you don't like their color? Painting MDF panels can make a difference, but not all paints are suitable for this. And if so, then for sure you want to ask: which ones are suitable and what is the price of the solution? This is what we will find out now.

Material feature

Sawing, cutting, milling, drilling, perforating and, of course, painting. It is for this set of qualities that MDF made from wood waste. All these operations are not particularly difficult, with the exception of the staining process - if you do not know the characteristics of the material, it will take a lot of paint for furniture from MDF, and the result will disappoint you.

Reason 2:

1. The material is highly hygroscopic, it absorbs coloring compositions like a sponge;
2. When stained, wood pile rises from the interaction of the coloring composition. The result is an unattractive and rough surface to the touch.

What suits

It is clear that these problems can be solved in production, because in construction stores All MDF products are qualitatively painted and smooth to the touch. Is it possible to achieve such an effect with your own hands?

Important!
Looking ahead, I will say - it will definitely work.
The secret lies in the preliminary application of an insulating primer that impregnates the MDF and creates a high-quality base, as well as in grinding the surface before applying the final coloring layer.

We will return to the process of surface preparation. The main thing is to first figure out how to paint MDF at home. We will need special compositions with high covering power.

These include:

• acrylic enamels and paints in the form of aerosols.
• enamels made on an alkyd-urethane, alkyd or oil base;
• polyurethane enamels.

Acrylic enamels

This group is considered environmentally friendly, since it is a water-dispersion composition based on acrylate or latex copolymers. Most manufacturers recommend their use in residential areas and even children's rooms.

Another plus - good protection surfaces from moisture and temperature changes, which is quite important for furniture and sliding MDF screens in bathrooms.

On sale most often you can find the following compositions:

Name	Options	price, rub.
Belinka AQUA EMAIL	The composition is endowed with good hiding power, and when applied creates a glossy film. The manufacturer allows the composition to be applied over old paintwork materials. Be sure to use an insulating primer. Among the features of this composition can be identified: high resistance to ultraviolet radiation; the drying time of the layer is 4 hours. This composition can be recommended for products located in direct line of sight sun rays. If you doubted whether it is possible to paint MDF wall panels that have faded in the sun, then applying Belinka AQUA EMAIL in 2-3 layers will make them resistant to UV exposure.	590 for 0.75l; 1720 for 2.5l

Some of the compositions presented can also be used as an insulating primer. For such purposes, the manufacturer recommends diluting them with water in a ratio of 70% paint and 30% drinking water.

Before you paint white door from MDF under a tree, it is obligatory:

1. first apply a base coat of light paint, after which you can apply dark tones;
2. using a special rubber brush, without waiting for the second layer to dry, treat the surface to obtain a wood structure.

Captain Evidence informs: if you choose how to paint MDF panels small size, then it is not advisable to purchase paint in a large-capacity package.
And since the smallest volume is 0.9 l, it is worth taking a closer look at acrylic paints in cans.
It is also important that when applying such compositions, wood fibers do not rise on the surface, which simplifies painting.

Important: before painting MDF with an alkyd spray, the surface should be primed.

Alkyd and alkyd-urethane enamels

Another fairly large group of coloring compositions that allows you to paint MDF surfaces. If you do not know how to repaint MDF furniture with your own hands, then for self use I can recommend products from the following manufacturers:

Important: Do not forget that all alkyd compounds have a pungent odor, which, moreover, is quite toxic during the drying process.
It is important to organize staining in a ventilated area using personal protective equipment.

Polyurethane enamels

Polyurethane compounds are primarily interesting for their wear resistance and durability. Agree that if you spend money on expensive paint, then its service life should be maximum. In the case of the type in question, manufacturers guarantee at least 20 years!

So, what can be purchased from this group in our country? Below we will take a closer look at some of these compositions:

Coloring process

We figured out the compositions, and now you know whether it is possible to paint MDF panels and with what exactly.

It's time to puzzle you with some of the nuances of the upcoming process, telling you how to paint MDF:

• Any surface must be pretreated with primer. It fills the pores of the material, preventing further absorption of the finish coating (paint);
• After applying the primer and drying, the surface must be sanded to remove the raised wood drag. It is best to use a grinder for these purposes;
• The surface should be cleaned of dust, and only then apply the first coat of paint;
• Repeat the sanding process again to remove the raised fibers from the surface again;
• Then apply a second coat of paint;
• To give a finished appearance, the surface should be polished.

Important: when applying paint to a previously painted surface, it should be degreased.
If the surface has been laminated, then it will need to be treated with an adhesive primer.

Conclusion

I hope that my review of painting compositions for MDF and products from it will be useful to the dear reader, as well as the painting technology itself. As usual, Additional materials Your attention will be provided by the video in this article. I would appreciate your comments and additions.

Good luck, comrades!

In PVC film, one should not forget about alternative directions for the development of the enterprise, for example, such as painting MDF facades. The situation in the furniture market is constantly changing and the demands of consumers do not remain unchanged. Therefore, sooner or later, manufacturers of MDF furniture may face the question of how to paint the MDF facade, what equipment and materials will be required, and what technology for painting MDF facades is best suited for this particular enterprise.

Equipment for painting MDF facades

To paint MDF facades, you will need a room with an area of ​​​​at least about 40 square meters. m with a separate chamber for painting, a place for grinding parts, for drying and for storing blanks and holding finished products. The room must be heated with a temperature of at least 20 degrees. The painting booth should be suitably equipped with an exhaust hood and preferably a rotating table, a drying room with racks, and a sanding area with powerful vacuum cleaners.

For applying coatings and soils, you will need a pneumatic spray gun with a nozzle from 1.5 to 2 mm and a compressor with a receiver of 80-100 liters to it. For grinding parts, you will need an eccentric vibratory Sander, and for polishing - an angle grinder (grinder) with the appropriate nozzles.

Preparing MDF for painting

At choosing MDF for painting, special attention should be paid to the quality of the plate, first of all, the raising of the pile during processing and the presence of embossing from the molds used in its manufacture.

Milling of MDF facades should be carried out at the highest possible speed of the tool in order to reduce the likelihood of raising the pile. Since the paint layer of the finished MDF facade remains very fragile, sharp corners should be avoided on the parts, which can be knocked down by careless handling. For this they are processed edge cutter radius 2-3 mm.

Grinding the details of the MDF facades must be done over the entire plane in order to remove the top protective layer of wax. For this, an eccentric sander with P 180-240 sandpaper is used. The complex curves of milling MDF facades are easiest to handle with an emery sponge.

If you plan to paint MDF facades consisting of several constituent parts, the cracks formed at the joints must first be puttied with a pore-filling primer. After complete drying its residues should be carefully removed with a rag or spatula, and then cleaned with P240-320 emery cloth.

Priming of MDF facades for painting

First of all, complex reliefs of milling or overlaid elements of the surface of the MDF facade are primed. Then the edge of the part is primed. Further, the entire plane of the MDF facade is covered with soil. The movement of the gun is carried out first along and then across the part. Each subsequent layer should overlap the previous one by 50%. All subsequent stages of applying primers, paints and varnishes are carried out in a similar way.

If it is required to paint the MDF furniture facade on both sides, then LKM is first applied to inside facade. After it dries, you can cover the front side.

As a rule, the primer of MDF facades for painting is carried out in 2 stages. At the first stage, with the help of an airbrush, a layer of insulating primer (80-100 g / sq. M) is applied, which should provide protection against absorption of subsequent layers of paintwork materials and raising the pile. After complete drying, grinding is performed with an emery sponge or P320-400 sandpaper. It is important that during active grinding do not wipe the soil layer to the MDF.

At the second stage, before painting the MDF facade, a layer of white polyurethane primer is applied 150-200 g/sq. m. The drying time of this layer can last from 8-10 to 24 hours, depending on the composition of the paintwork used. After drying, sanding with P320-400 sandpaper is performed. Milling bends and hard-to-reach areas of the MDF facade are ground with an abrasive material S-cotch-brite.

Painting MDF facades

Painting of MDF facades is carried out with the help of an airbrush with a consumption of paint (enamel) from 60 to 200 g/sq. m. Setting the nozzle diameter, air pressure, method of spraying, the number of layers and the interval of their application, as a rule, depends on the type of paint used. Therefore, before painting the MDF facade with one or another paint (enamel), you should carefully study the instructions for its use.

Complex ready-made compositions of paintwork materials with various special effects should be thoroughly mixed beforehand, since the decorative component of the paint can settle in a solid suspension at the bottom of the can. You also need to make sure that the decorative additives will pass freely through the nozzle of the gun.

During painting and varnishing, it is important to exclude all possibilities of dust, debris or insects getting on the surface of the MDF facades. If this still happened, you must have tweezers or a needle on hand.

Significant and highly visible smudges of paint (primer) are removed after drying by cutting with a clerical knife, and then carefully cleaned with sandpaper.

Patination of painted MDF facades

As a rule, patina is used on matte colors facades MDF with complex elements surface and edge milling. The patinating composition is applied without prior priming over the paint layer using an airbrush, roller, brush, foam rubber, swab or other tool. After drying, the excess patina is removed by grinding with P320-400 abrasive materials or sandpaper. S-cotch-brite.

After a thorough cleaning of the MDF facade from dust, the paint layer and patina are covered with acrylic matte varnish (130-150 g / sq. M) and sent for drying. After 12-24 hours, the matte MDF facade can be packed and sent for storage.

Covering the facade of MDF after painting with varnish and polishing.

In order to give the surface of the MDF facade high resistance to mechanical damage, and freshness and depth to the paints, it should be covered with acrylic transparent glossy varnish. Lacquer is applied in two layers 120-150 g/sq. m, in two doses with an interval that ensures the drying of the first layer (according to the instructions).

Varnished MDF facades are sent to dry. After 1-2 days, you can start grinding, and after 5-7 days, polishing and finishing the product.

Sanding the dried layer of varnish using an eccentric sander begins with the processing of the facade with P1200-1500 sandpaper and ends with P3000-4000. At the same time, the surface of the facade must be periodically sprayed with water to prevent overheating and rolling of varnish particles. At the end of grinding, a uniform, uniform matte surface should be obtained.

For polishing MDF facades, an angle grinder with a hard (Novol white) foam wheel and an abrasive paste are used. Bril -852. After applying the paste to the surface of the facade, it is necessary to rub it over the area with a machine at low speed. Then, increasing the speed of the machine to 1500-2000, proceed directly to polishing. It is important to smoothly move the circle from one edge to the other, first horizontally and then vertically. The polishing wheel should be slightly moistened. In addition, for greater effect experts recommend applying a little furniture wax to the circle.

For finishing touches gloss will need a non-abrasive paste Siashine FINISH and a soft (Black Novol) foam pad for polishing. The result should be a facade with a mirror surface.

Packaging and storage of painted MDF facades

The best option for packaging painted MDF facades will be polyethylene foam plus corrugated cardboard. On the one hand, they will well protect products from mechanical damage. On the other hand, some paintwork materials continue to emit vapors for some time. chemical compounds, which condense on the surface of the facade when packed in ordinary polyethylene and leave spots on the gloss. This combination of packaging material makes it possible to dissipate the vapors accompanying the drying process even after storage.

The effectiveness of painting MDF facades

It is quite difficult to determine the benefits from the manufacture of painted MDF facades if the manufacturer is not exclusively engaged in their production and sale. According to various sources, the average cost of 1 square. m glossy facade is 60-80 dollars. The main share of the costs falls on the wages of skilled workers, since the technology for painting MDF facades is based on manual labor(priming, grinding, painting, polishing), and the entire production cycle sometimes reaches 10 or more days.

In conclusion, I would like to say that the technology for painting MDF facades may differ at different enterprises, since there is great amount primers, paints, enamels, varnishes and other materials, which are strikingly different from each other in their technological properties. For example, in recent times it has become fashionable to use automotive primers and enamels when painting MDF facades. But before you paint the facade of the kitchen, it is worth remembering that the car and the kitchen have completely different functions, and it’s not a fact that car enamel is so harmless that it can be “consumed” with food.

Therefore, before painting the MDF facade with an unknown paint, you should still study paint market. Fortunately, there are plenty of companies producing primers, paints, enamels and varnishes for working specifically on MDF. Here is a list of some well-established brands:

· paintwork : Sayerlack, Votteler, Sivam, Tikkurila, Teknos, Sirca, PaliWood UM;

· Patina: Sayerlack , Borma, H esse Lignal

· Polishing pastes : 3M Perfect, Bril-852, Menzerna, Siashine FINISH.

Perhaps there is not always enough money to update the interior. Painting MDF is a way out if the furniture frame is intact, but you want to transform or change the design. You can try to repaint the facade of the kitchen or other MDF furniture yourself.

Good that modern technologies and materials allow painting MDF at home quite efficiently. Let us consider in detail how to paint MDF facades with your own hands using standard technology.

Painting MDF facades is a rather time-consuming process that requires patience and diligence. And also buy quality materials, for getting good result. The materials that are used to make furniture are wood or furniture boards. Recently, the use of MDF facades has become increasingly popular. To repaint furniture, it is necessary to prepare materials that are commonly used for wood processing. These include:

• Sandpaper with varying degrees of abrasiveness.

• Masking tape.

• Facade painting equipment (sprayer).

• Various compositions for degreasing, priming, staining.

Let us consider in detail what these materials are and what function they perform.

Sanding paper

For the process of grinding MDF boards, ordinary sandpaper is used. Use it with varying degrees of abrasiveness and on various stages. In each case, the granularity changes sandpaper. MDF is a fibreboard that is processed in a similar way to wood. In this way:

• When preparing the surface for priming, we will use sandpaper with a grit of 220-280.

• To remove the uneven application of the soil, sandpaper with an abrasiveness of 320 is taken.

• Finish sanding before painting with 500 grit sandpaper.

For the convenience of performing work, you can use sandpaper with a foam or felt base.

Paint Sprayer

Do-it-yourself painting of MDF facades can be done using paint brushes or rollers. This is a perfectly acceptable option, but it will not be possible to achieve a flawless surface. Therefore, it is better to use paint sprayers for do-it-yourself MDF furniture processing. In addition to the quality of application, the spray gun will make it possible to speed up the process.

Advice! Use paint sprayers for the priming process as well. This will significantly speed up the application of the primer.

Sprayers for applying paint are divided into two types: electric and pneumatic. You should also pay attention to the diameter of the spray rod. For painting MDF, rods with a diametrical section of 1.2 - 1.3 mm should be used so that the coloring material is applied in a very thin and uniform layer.

Degreasers

Highly important point before painting MDF furniture facades, carry out a surface degreasing procedure. If you ignore this process, then after completing all the stages, defects may be found that can only be corrected by completely doing it all over again. Degreasing of MDF facades is carried out using compounds that contain organic solvents. Such products successfully remove various oils and fats. They also work well with polyorganosilicones.

Types of primers

Painting of furniture facades is not carried out without a priming process. It is also one of the guarantors of quality work. It is priming that will ensure reliable adhesion of the surface of facades with paint compositions. You can use several types of primer, which are also suitable for MDF surfaces:

• for plastic surfaces;

• epoxy;

• steam-filling.

Surfaces from natural wood epoxy primer is not recommended. And prime MDF boards in turn with all primers: plastic, epoxy, vapor-filling.

Painting materials

There are two types of enamel paint for MDF directly:

• on an alkyd basis;

• acrylic based.

The first is a derivative of alkyd resins. It is possible to paint MDF panels with this paint quickly, since after application to the surface it quickly hardens when optimal temperatures and degree of humidity. It costs less than acrylic, but finishing varnishing is necessary.

Acrylic enamels are more convenient when working with MDF, as they absolutely do not require the application of a varnish layer. After surface treatment of this type of coloring matter, an ideal glossy layer is immediately formed.

On the video: MDF painting technology.

How to prepare MDF facades for painting

Painting MDF with enamel requires very careful preparation. The quality of the enamel coating depends on how responsibly this process is approached.

It consists of several points that must be done correctly.

Removing the old coating

An important piece of advice to which we pay attention: you can not apply paint for kitchen facades or other pieces of furniture on painted MDF. The adhesion of the layers will be very weak and the new coating will peel off very quickly. To avoid negative consequences, MDF pre-processing is performed. Before painting the product, it is necessary to remove the old gloss with coarse sandpaper. It is not necessary to completely remove the gloss, you can simply violate its integrity in such a way that grooves form over the entire area, which can increase the adhesion of materials.

Priming work

The technology for painting MDF with primers consists of several stages. But do not forget that before repainting the furniture and treating it with a primer, the surface should be degreased.

After the degreasing process, do not touch the surface with your hands.

• The process begins by priming with a primer for plastic surfaces. Experts recommend starting from the ends and hard-to-reach places. The primer of this type is applied in two layers. Each subsequent one only after the previous one dries completely.

To achieve a uniform color, both with paint and with a primer, it is necessary to apply each subsequent layer perpendicular to the strokes of the previous one.

• The next primer is epoxy. Apply 1 or 2 coats. Drying should be done at optimal conditions at least a day.
• The following layers of vapor-filling primer. This substance has a tint, so you need to choose it correctly. If it is planned to use light-colored paint, then the primer should be white. In the event that the surface is smooth, then one layer of primer is sufficient. Otherwise, we evaluate the density and condition of the kitchen facade.

final sanding

At the last stage of preparing MDF for painting, it is necessary to perform grinding. To do this, use sandpaper with the finest grit.

Moreover, it is not necessary to press it hard so as not to disturb the primer layers. If, nevertheless, after grinding, areas with open pores have opened, then they are treated with a one-component putty.

The final sanding process is also an important point, since during this, excess putty and Orange peel, which is formed by the primer layers.

Paint application instructions

Before painting MDF, it is necessary to clean the surface of dust that remains after finishing sanding. It is better to do this by degreasing. Next, we present detailed description technologies for painting MDF facades. Is it possible to perform work when painting MDF with your own hands, with a paint brush? I guess, yes. But the result won't be perfect. So, repaint the furniture according to this algorithm:

• The first rule: we prepare the coloring matter for application according to the manufacturer's instructions.
• We fill the atomizer and adjust its operation so that the capture area is small. This will allow you not to waste excess material and more carefully stain.
• The process of applying the coloring material also begins with the most problematic areas, and then moves on to the main area.
• It is better to apply several layers. Painted products are dried at intervals of about 20 minutes.

If there is no experience with the spray gun, then it is necessary to conduct training work on some test piece.

On the video: errors when painting with a spray gun.

After you paint the MDF, it should be varnished for furniture, which allows you to create a gloss. The work process is exactly the same as when applying paint. But you should prepare for it more carefully. The work area must be perfectly clean. If the workshop is dusty during varnishing, then it will be difficult to achieve a mirror gloss.

The interval between applying layers of varnish should be about 10 minutes. The field of complete drying is polished.

This is not to say that MDF painting technology is simple. It's pretty hard work. If you have not encountered MDF boards and their processing before, then at first you should practice and paint old and unnecessary furniture. As soon as it starts to turn out, the MDF facades are painted on your favorite furniture. If there are doubts, then it is better to leave it to professionals from the Ruhlman company.

Painting MDF facades (1 video)