How to paint a white PVC window sill? Proper preparation, painting and varnishing of the window sill!

Plastic window sills look good in the interior; they are standardly available in white, which fits universally into various designs. But over time, the whiteness of the coating is lost, stains appear on the surface, and they significantly worsen the external characteristics of the product. And some design projects involve painting the window sill to complete the design idea. How to paint a plastic window sill will be discussed below.

Is it allowed to paint plastic?

Owners of plastic window sills often wonder: is it possible to paint a plastic window sill and with what? The answer will be positive, the process will not take much time, and there will be no need to dismantle the window sill. It will be enough to pay attention to the surface preparation stage and the choice of product with which to paint the base.

By painting a plastic window sill, you can save money and transform the room in a short time. You can do the transformation yourself without resorting to the services of professionals.


By painting a plastic window sill, you can save money and transform the room in a short time.

Precautions during the restoration process

When updating an element of a window unit, it is necessary to take precautions, since some materials are toxic and harmful to human health or skin:

  1. When working with a remover or a hair dryer, it is necessary to thoroughly ventilate the room, and the skin of your hands can be protected with rubber gloves.
  2. When sanding a surface with sandpaper, it is recommended to wear a gauze bandage to avoid inhaling dust from the previous coating.
  3. When painting a window sill, it is also necessary to wear gloves and a gauze bandage, especially when working with an aerosol.

Thus, any window sill can be restored and given an aesthetic appearance. To do this, you need to remove the old paint, wipe out cracks and scratches, level the surface with putty, and choose the right paint.

Related article: Removing the window sill of a plastic window with your own hands

Why do you need to paint a window sill?

The plastic material is unpretentious and does not require special care. However, over time, the white coating may turn yellow, and even constant cleaning cannot prevent this. Window sills are made from PVC plastic, the material is racks. But cases are different, and the surface may be damaged; to correct the flaws, you can resort to painting.

Also, painting may be required during repairs, when the designer’s idea includes changing the color of the surface. This solution will look original.


Window sills are made from PVC plastic, the material is racks.

Window sill restoration: materials and tools

The coating of any window surface deteriorates over time and loses its aesthetic appearance, but the situation can be corrected by restoring the old coating and painting it. Before starting work, you need to purchase the materials and tools that will be needed in the process of updating the window sill.

To restore the coating you will need the following tools:

  • sheets of sanding paper (from coarse to finer);
  • masking tape;
  • putty knife;
  • construction hair dryer;
  • brush;
  • rubber gloves.

The following building materials must be purchased:

  • wash;
  • priming;
  • putty;
  • paint.

Features of coloring

Special paint for plastic window sills must be selected. Standard enamels cannot be used; they form an uneven layer on such a coating, and it will peel off quickly. In addition, it is necessary to clean the surface from old paint and varnish material. Otherwise, it will not be possible to apply a new layer evenly and reliably.

The priming stage is required; it will ensure a long-term coating, the color of which will last for many years.

Neglecting these steps will lead to the need for re-painting after 6 months.


It is necessary to clean the surface from old paint and varnish material.

Offers from manufacturers

Acrylic-polyurethane dye for plastic PoliPlast RP Base is known on the construction market . The demand is explained by the fact that the material does not have a strong odor, the solvent is water, pigments are introduced into the composition, which allows you to obtain CM of the desired color. The new coating is dirt-repellent and weather-resistant. Its appearance lasts from 5 to 7 years.

Experts often choose a two-component water-based polyurethane composition PaliPlast UR . Its resistance to various influences is higher. The coating is much harder.

The material is applied at a temperature of +30 o C. If the temperature is lower, the covering layer will take longer to dry. For example, a temperature of 20 o C - drying will take more than 8 hours, provided there is normal humidity in the room.

The manufacturer produces KM in different colors. In addition, the texture is selected.

To update a colored PVC window sill, we recommend CMs from Switzerland from the Feyco AG concern, and from Russia (Palina Coatings). These dyes are a new generation of innovative materials.

What materials can be used

Today there is a wide variety of paints and varnishes on sale that can be used for PVC structures, including window sills.

Acrylic compositions can be distinguished, the basis of which is water. Their high level of technology is noted; many companies produce them. They are distinguished by their rapid drying rate, obtaining a layer that is resistant to mechanical stress, and quickly acquire hardness. Professionals have long rated these products as effective.

When painting a surface that is used in flammable areas, you can choose “Polistil” paint for window sills; its purpose is to paint metal objects, but it can also be used on plastic. Creates a fireproof layer and does not emit a pungent odor.


Their high level of technology is noted; many companies produce them.

Instructions for preparation and coloring

Preparation is an important stage; first of all, the old finish is removed. After removal, the surface is washed using detergents. To give a smooth surface, the window sill is sanded.

The clean surface is degreased with a suitable substance. When the coating dries, apply a primer solution. Painting can be carried out only after the primer has completely dried.

It is worth protecting the window and adjacent walls by applying masking tape to them.


To give a smooth surface, the window sill is sanded.

How to choose a degreaser and primer

The choice of degreasing and priming agent is important. They will ensure a high-quality result. Suitable for degreasing:

  • Acetone;
  • Vinegar;
  • Petrol.

You can resort to ready-made types, here they look at the constituent components so that they do not differ from the composition of the paint, this can lead to a reaction.

The degreaser is used on a matte finish; if the surface has a smooth structure, it must be sanded with sandpaper.


The degreaser is used on a matte finish.

Plastic has a low adhesion rate, for this reason the primer solution should be selected with a high degree of adhesion and elasticity.

Professionals note that acrylic primer works better with plastic materials.


Plastic has a low adhesion rate, for this reason the primer solution should be selected with a high degree of adhesion and elasticity.

Kinds

The choice of paint and varnish material is made taking into account home conditions and the preferences of the owners. If the item will be subjected to mechanical stress, then it is worth purchasing paints that are resistant to them. For example, when they are going to place flowers in pots on the windowsills.

To obtain a brighter shade, painting should be done in several layers. The factor is also taken into account when choosing. The drying time of the coating is also important; when not a single layer is done, the repair period can increase significantly.


To obtain a brighter shade, painting should be done in several layers.

Aerosol

Aerosols are convenient to use; spraying helps to obtain uniform coverage. Spray paints are characterized by a high degree of adhesion to plastic, reliability and resistance to mechanical stress. The following advantages are noted:

  • Ease of use;
  • No need to buy tools;
  • Wide range of colors: brown, black, red, green, gold and others.

The disadvantages include:

  • You cannot mix shades;
  • Sprayed over a large area;
  • Possibility of creating only a matte layer.

To avoid applying the product to other objects, cover them with tape. You need to spray at a 20-centimeter distance.


Aerosols are convenient to use; spraying helps to obtain uniform coverage.

Water based

Water-based paints help to obtain a durable coating that will not scratch quickly, the layer will be glossy. The product is easy to apply. The main thing is to follow the work rules.

The substance is non-toxic and absolutely harmless to human health. They are distinguished by their long service life and quick drying. Applying several layers will not take much time.


Water-based paints help to obtain a durable coating that will not scratch quickly, the layer will be glossy.

Acrylic

The acrylic type is used for a variety of materials. Their cost is not high, although some high-quality products may cost more. The color palette of paints is wide, but the shades of the compositions in the jars may vary; this property must be taken into account before painting the window sill.

Acrylic paints are safe for health.

Drying the layer takes no more than 2 hours. However, the material in an open jar can be stored for no more than five hours. Painting must be done quickly.


Drying the layer takes no more than 2 hours.

What do paint and varnish manufacturers offer?

Today's manufacturers offer a wide range of multi-colored acrylic paints and varnishes produced specifically for plastic. They create beautiful, fade-resistant colors, reliable film coatings, perfect gloss and smooth, quick-drying surfaces. They are excellent for restoration and decorative finishing of plastic window sills.

Related article: Sizes of window sills for plastic windows

Among such products, acrylic polyurethane paint for PVC PoliPlast RP Base stands out. The paint is practically odorless, dilutes well with water and can be tinted with any shade of color. After painting, the window sill will have a smooth, stain-resistant decorative surface and high resistance to aggressive weather conditions. The service life of the paint without obvious deviations from the original appearance is 5-7 years.

What can you do to secure it?

The use of varnishes will help increase the durability of the new coating; you can use other means suitable for fixing paint on window sills.

It is necessary to choose options that use similar components as in the main paint, then a chemical reaction will not form.


The use of varnishes will help increase the durability of the new coating.

How to paint a plastic window sill - advice from professionals

Professionals recommend that before work you think through all the nuances of the interior in order to choose the right shade. It is also important to decide whether you want to achieve a glossy or matte effect. Different paints give different effects.

It is important to clean the surface of all types of contaminants, including dust; the coloring agent will highlight any imperfections. Therefore, you can use special cleaners for plastic surfaces.

If there are large defects on the surface, they are treated with a putty mixture. The primer application step cannot be skipped; without it, the paint will not adhere to the plastic.


Professionals recommend that before work you think through all the nuances of the interior in order to choose the right shade.

Painting a plastic window sill is possible; you can do it yourself. The main thing is to choose the appropriate type of dye; the working conditions and the owner’s needs must be taken into account. And also carry out thorough preparation of the base to obtain a good degree of adhesion. Painting will update the appearance of the window sill and transform the interior of the room.

Coating a plastic window sill with varnish:

In order to protect and preserve the quality of the paint layer on a plastic window sill for as long as possible, it must be varnished. The water-based varnish PaliPlast RP 022 Varnish gives an excellent effect of depth of coverage and high gloss. Its use creates an additional layer, which is decorative and makes the color of the surface more saturated.

A particularly beautiful surface is provided by acrylic varnishes mixed with metallized decorative pastes, which give a “metallic”, “mother of pearl” or “gold” effect to the varnish coating of the window sill.

Today, painting a plastic window sill will not be a problem even for a beginner. It is enough just to purchase paint, cleaner, impregnation and varnish on a common basis and from one manufacturer, as well as follow the correct sequence of work. After which the window sill will delight you for many years with its bright colors, beautiful appearance, fits seamlessly into the interior and saves money.

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