Despite the fact that in terms of durability, plastic is one of the best materials for making window sills, there can be problems with maintaining its original dazzling whiteness. No matter how careful and careful you are, from the appearance of yellowness or hard-to-remove stains from brilliant green, especially if there are small children in the house, no one is safe from felt-tip pens or plasticine.
In the same way, the recent renovation may affect the condition of the window sill. It can be very difficult to wash off traces from primers or coloring compounds, as well as traces from polyurethane foam or adhesives.
The appearance of yellowness is quite a standard reaction of plastic, as a material, to regular exposure to direct sunlight.
A very important point in the selection of detergent and work equipment is the type of surface of your windowsill. It is of two types:
- Smooth glossy;
- Rough and more matte.
In the first case, it is categorically not recommended to use abrasive bulk products and a hard sponge, brush, and even more so scrapers. This will inevitably lead to minor scratches and deprive the surface of the attractive glossy sheen.
On the contrary, a rough surface must be cleaned with a coarser sponge, since dirt, dust and other stains are very difficult to wash out due to the presence of irregularities. In extreme cases, you can even use finely abrasive products. Scratches on such a window sill will not appear.
Consider folk remedies, starting with the simplest.
- If the yellowness is the result of normal pollution and not sun fading of the plastic, you can treat it with regular soap.
The result will be much better if you use household soap. First you need to rinse the surface with a light soapy solution. This will help you understand how much yellowness has managed to eat into the surface.
Dissolve a small amount of dish soap or liquid soap in about 1 liter of water. Stir the solution and scrub the windowsill thoroughly with a soft dishwashing sponge. After that, grate a small amount of laundry soap, fill the shavings with hot water and let it dissolve a little.
You should get a soapy gruel, which must be applied to the yellowed areas in an even layer and left for 30 minutes. Then, using a sponge, soft or hard, depending on the type of surface, rub the windowsill. The remaining soap should be washed off with warm water until the soap suds no longer appear on the surface.
If the soap fails, prepare a solution based on washing powder and baking soda.
- Add 1 tablespoon of each product to a small amount of warm water (0.5 liters).
- It is better to use a powder with a whitening effect, and soda ash – soda ash. You also need to make sure that the grains have necessarily completely dissolved in the water, otherwise the glossy window sill can be scratched with a fine abrasive.
- Using a spray bottle, spray the solution onto the plastic surface and leave for 1-1.5 hours. Then rub the surface with a sponge and rinse with clean water;
Sometimes it is enough to wash the windowsill with a regular glass cleaner. If the yellowness is the result of irregular care, then this method is quite effective.
If yellow spots appear after careless watering of indoor plants, rub them with regular hydrogen peroxide.
Note! Ammonia, dry mustard, and citric acid can permanently damage plastic surfaces. When applied, small cracks may appear, caused by erosion of the top layer.
The process of removing yellowness, which has already eaten into the top layer of plastic, will be more laborious. If you need to whiten a windowsill, try one of the following remedies:
- 2 tbsp. Dissolve a spoonful of quality bleach in the form of a powder in 1 liter of water. Add 2 tablespoons of perhydrol to it. Add the last component in small portions so that the composition does not heat up.
- Spray the surface with the resulting product, leave to act for 5-10 minutes, rub with a sponge, and then rinse thoroughly with clean water;
Chlorine detergents can also restore whiteness to plastic. But! Before applying the solution to the window sill, be sure to make sure that the package has a mark “for plastic”.
Otherwise, you will not only not get rid of the extraneous shade, but also end up with a cracked surface. Since the concentration of chlorine can be so high that the product will simply corrode the top layer of plastic.
Yellow spots can be removed with regular rubbing alcohol. Just be careful – not ammonia in any way! And before applying the product to a large area, it is better to try rubbing a small area of the surface in an inconspicuous place with a cotton swab moistened with alcohol.
Chalk and tooth powder are also excellent whitening agents. A piece of chalk needs to be crushed into dust. Mix 1 tablespoon of chalk powder with a little water.
The consistency should resemble a thick gruel, which must be applied to the stains and left for a while. To heighten the effect, you can add 1 tablespoon of tooth whitening powder. The older the stain, the longer it will take for the composition to take effect.
Many housewives recognize a solution based on soda, vinegar and dishwashing liquid as the most effective remedy. The problem area must be wiped with a sponge dipped in warm water just to moisten it. After that, sprinkle the surface with baking soda evenly.
A sponge or cloth is moistened with vinegar, and a little detergent is poured on top. After that, the surface sprinkled with soda is rubbed with a cloth treated in this way without much effort. You will see how foam forms, which must be left to act for 10-15 minutes. And then immediately rinse off the remaining components with clean water.
It is very important not to leave the product for a longer time, otherwise, under the influence of a chemical reaction, the plastic may change its color.