How to make a window sill at home without removing and the choice of paint

Plastic window sills fit well into interiors of different design. However, this product is usually made in white and will fade over time. In this regard, in order to eliminate this inconvenience, as well as in the implementation of some design projects, it becomes necessary to paint the window sill. But when carrying out this procedure, a number of nuances should be observed, on which the service life of the dried composition depends.

Requirements for the composition of the dye for PVC

Standard enamel is not used in cases where it is necessary to renew a plastic window sill. Such compositions practically do not penetrate into the PVC structure, so after drying they begin to swell and exfoliate in large fragments. For painting plastic window sills, materials that meet the following requirements are suitable:

• increased grip;
• create a durable and elastic surface layer;
• tolerate temperature fluctuations, direct exposure to sunlight and mechanical stress;
• retain their original shade for several years;
• does not emit toxic substances when heated;
• form a water-repellent layer.

When choosing a dye, you need to take into account the peculiarities of the plastic from which the window sill is made. Enamels are used for processing soft materials and acrylics for hard materials.

Convenience of work is considered an important characteristic of formulations. In particular, it is recommended to paint plastic window sills with materials that do not need to be constantly mixed or applied with special sprayers.

Suitable types of paints

When painting plastic window sills, soft formulations are recommended. These materials are designed for finishing car interiors, and therefore are characterized by increased durability and the ability to withstand sudden temperature fluctuations. However, these formulations are difficult to use. In particular, it is important to select the correct primer for the specific substrate. Otherwise, the degree of adhesion of the dye applied to the plastic decreases.

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Aerosol

Aerosol compositions used for painting the interior of cars are considered optimal. These materials differ in the following characteristics with regard to the processing of plastic window sills:

• applied evenly over the entire surface;
• can be applied in several layers, thereby making the color of the paintwork richer;
• strong and durable;
• wide color palette.

The disadvantages of aerosol dyes are:

• overload;
• you cannot mix different shades;
• you can only create a matte finish;
• difficult to work with.

When spraying spray paint, you need to move smoothly, without lingering in one place.Otherwise, a darker stain will remain on the surface, which stands out against the background of the window sill.

water-based

Water-based dyes have the following advantages:

• easy to apply;
• form a durable layer with a brilliant shine;
• abrasion resistant;
• nontoxic;
• dry quickly.

The disadvantages of water-based paints are:

• can be applied at temperatures above +5 degrees;
• cannot be applied over old paint;
• the surface layer retains its strength characteristics for a month.

Also, the advantages of such paints include the fact that with such materials the process of finishing the window sill is accelerated. This is because the water base evaporates quickly.

Acrylic

Water-based acrylic paints are also often used to decorate the window sill. Such compositions are characterized by the following characteristics:

• lack of smell;
• easy to apply;
• create a vapor permeable, strong and durable layer;
• abrasion resistant.

Despite these characteristics, when buying acrylic paints, the following circumstances should be considered:

• a number of formulations dry out completely within a month;
• it is necessary to carefully select acrylic dyes.

The last point requires clarification. Due to the growing popularity of acrylic dyes, low-quality counterfeit products are often found on the market. In addition, it is difficult to check before buying the composition.

Surface preparation rules

Painting window sills begins with surface preparation. Initially, it is necessary to remove the old coating, for which the following methods are used:

1. With a special paint stripper. Such compounds make the old material soft.After applying the wash, you need to wait a few minutes, then remove the swollen dye with a spatula.
2. By sanding. First you need to process the window sill with coarse, then medium and fine sandpaper. This method allows not only to remove the old stain, but also to level the surface.

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Also, a construction hair dryer is often used to remove old paint. But this method is not suitable when processing plastic window sills, since the material melts when heated.

At the next stage, the surface is degreased. For this, vinegar, gasoline or acetone are used. During this operation, it is necessary to provide end-to-end ventilation in the room. It is possible to degrease the window sill, provided that matte paint is used in the future.

After completing the described manipulations, it is necessary to prime the surface. This is done to increase adhesion and, therefore, increase the life of the applied dye. When processing plastic window sills, it is recommended to use an acrylic primer.

In the end, it is necessary to putty the defects. Additionally, sealed cracks and pits are treated with fine emery paper to hide irregularities. After that, you need to tape all surfaces next to the window sill.

How to paint correctly at home

The order of painting the window sill depends on the type of composition selected. If materials are used in the form of aerosols, the procedure is carried out according to the following algorithm:

1. Shake the box vigorously for 30 seconds.
2. After installing the nozzle at a distance of 30 centimeters from the surface to be treated, it is necessary to evenly spray the paint on the window sill. At this stage, it is important not to linger in one place in order to avoid the appearance of darker spots.
3. Once the first coat is dry (duration depends on the type of paint), the second coat should be applied.

A roller is also used to process the window sill. In this case, it is recommended to pour the composition into a special container with a platform, which allows you to remove excess paint. The main part of the window sill is treated with a roller, and the corners and other hard-to-reach areas with a brush.

Anchoring

After painting the plastic window sill, it is recommended to sand the first layer. This procedure is mandatory if water-based formulations or acrylic materials are used. The second coat should also be sanded with zero-grit sandpaper.

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At the end of the painting, varnish should be applied to the surface. After this composition dries, the window sill is re-polished. In addition to varnish, special pastes should also be applied, which will give the surface a brilliant shine.

Additional tips and tricks

To obtain the effect of mother-of-pearl or golden luster, the varnish used for the finishing coat must be mixed with metallic pastes. To speed up the work, it is recommended to use PaliPlast RP 021 Cleaner. This liquid removes dust and grease. When painting the window sill, you also need to treat the fittings with special corrosion protection.

It is recommended to finish plastic products at room temperature.The drying times of the colorants depend on the characteristics of the product. But the second layer can be applied no earlier than 9 hours after the first.