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Cleaning and Sealing Paving Stone

Paving stones are not only in the so-called public traffic area, for the design and as a material and covering for roads, for sidewalks, for squares and for driveways, a popular and appreciated material.

Especially the so-called old town paving, whose stones are also popularly and often called cat heads and characterized accordingly, enjoys increasing popularity and popularity also in purely private construction projects, for example, when paving yards and driveways or even corresponding paths in the garden.

But also colored paving stones made of concrete, still enjoy great popularity. No matter whether in the execution of construction projects in the public traffic area or also with privately acting builders.

When should paving stones be cleaned and sealed?

Paving stones, whether the legendary old town paving, often with history and story or also the simple and cheaper paving made of simple concrete, should be cleaned professionally on a regular basis and then, if possible, also sealed immediately after the corresponding procedure, in order to be able to achieve and preserve a long-lasting cleaning result.

Of course, it is absolutely comprehensible also for the layman that such paving stones clean and seal during the winter months would be absolutely senseless.

  • On the one hand, the paving stones are covered with snow and ice during this period, and the road salt, which is usually used and applied on a regular basis, additionally damages their surfaces.
  • On the other hand, during the frost period, it would be dangerous to try to clean with water the paving stones on a sidewalk or on a driveway accessible to the public and used by the public.

This could freeze there overnight, for example, and the icing could consequently be a dangerous source of falls with the types of injuries that might then result.

Thus, it is reasonable and expedient, provided that the cleaning and the corresponding sealing of the paving stones can be carried out in early spring and thus at the earliest at the end of the frost period and in a temporal connection with the spring-cleaning, which can be found everywhere in the city and country.

However, it may also be advisable to clean and seal the pavers during the year. This may be advisable, for example, if there is a significant amount of moss or dirt, or even an unsightly growth of algae, on the surface of such paving.

In this case, a suitable cleaning agent should be used as soon as possible, before the algae growth and moss on the pavement can spread and intensify. Then it becomes more and more difficult to get rid of the plague spreading on the surface of the pavement.

Green coating

As it has been made quite clear in the previous text, the pavement on our streets, yards, squares, driveways, and paths is generally susceptible and sensitive to the growth of green algae, fungi, mosses, and more.

Paving simply represents a form of the sealing of natural surfaces, and thus it represents a product of human activity. However, the well-known principle applies on earth, according to which nature takes everything back in the end unless the hand of man can intervene again and again in an ordering and regulating manner.

Roads, squares, sidewalks, and yards would eventually become overgrown, overgrown, and even overgrown with bushes without the continuous landscape maintenance interventions of man. Basically, in the joints of the paving stones continuously namely dirt particles and with these than at the end also always a true multiplicity of seeds deposit.

These form their roots and can spread very gradually, first in the joints, then also on the surface of the paving stones. In addition, there are weed seeds, which first become visible as tiny black dots on the surface of the paving stones.

Later, the so-called green coating forms on the pavement. Nowadays, it generally consists of various types of lichens and fungi, and finally also of mosses and algae.

In order to stop and delay the victory of the almighty Mother Nature on our pavement for as long as possible, in order to preserve the visual attractiveness of the pavement or, if necessary, to be able to restore it in the short term, and in order to minimize the risk of slipping that regularly accompanies the growth of algae and moss, regular measures for cleaning and sealing pavers are urgently required and necessary.

Biological or chemical?

Of course, it is always a very important question to decide whether the paving stones should be cleaned and realized by those responsible, with biological or alternatively with chemical means and methods.

In practice, the opinions and views on this matter differ quite a bit, because everyone who regularly deals with and is entrusted with the cleaning and sealing of paving stones has his or her own empirical values.

In practice, probably also because they are better known and have historically been used and used far longer, the chemical means for cleaning the paving stones dominate.

They remove, for example, quite quickly, reliably, and effectively:

  • stains from a bet and from oil,
  • stains and deposits caused by weather conditions,
    rust stains,
  • lichens and mosses and stains that can come from lime.

Thus, it can be seen that when removing stains from the surface of the paving stones, chemical agents are the most useful, while fungi, mosses, lichens, and algae, should be eliminated and removed by biological agents.

Clean & Seal the Paving Stones

Necessary tools, equipment, and materials for Cleaning and Sealing Paving Stone

Of course, for the cleaning and sealing of paving stones, not only chemicals are required. In the following section, we will now show and explain what other types of tools, utensils, and materials may be required to accomplish the task at hand. A large bucket of water and a scrubber, as well as a spatula and a cutter knife, are probably among the main tools used and employed in cleaning pavers today. Some contemporaries also swear by soda mixed with water, which can be used and targeted for cleaning paving stones. In practice, however, this should be allowed to act on the plaster to be cleaned for at least 5 hours in total so that a corresponding and also visually clearly visible cleaning effect can be achieved. In this case, however, protective goggles and protective or assembly gloves must also be worn, as soda must not get into the eyes or onto the hand. What machines can be used? Basically, there is a lot of talk about the use of the high-pressure cleaner, when cleaning the surface of corresponding types of very different paving stones, in practice and the topic is and ultimately also always remains very hotly disputed. The opinions on whether you should now use and use such a high-pressure cleaner for cleaning paving stones are extremely far apart. A propane gas burner, as it is used for example also by roofers with the covering of appropriate flat roofs and used, has itself however of all in the best way with the back-protecting, fast and effective burning off of weeds, from algae and from mosses, which can spread completely gradually in the joints and on the surfaces of the paving stones. In the meantime, however, the industry has been able to develop and provide a whole range of instruments, tools, and aids for the purpose of cleaning and sealing paving stones. Today, this includes, for example, the joint scraper and other instruments and tools more. But also the so-called surface cleaner/patio cleaner, respectively the MultiBrush, are technical innovations and mechanized, or even motorized types of tools and instruments, with which the back-friendly paving stone cleaning and sealing can be carried out and realized today without any problems, quickly, effectively, and then last but not least, above all, quite inexpensively.

Is the use of a high-pressure cleaner recommendable?

Time and again, as has already been said and stated, opinions heat up on the important question of whether and to what extent a high-pressure cleaner, can be approved, or recommended, for cleaning paving stones at all.

Today, however, the high-pressure cleaner, in its practical application and use, proves to be absolutely unsuitable for cleaning the comparatively delicate and sensitive types of surfaces and of structures, such as the paving stones generally used today may have.

Indeed, it is not uncommon for the use and application of such a modern and powerful high-pressure cleaner to cause and initiate massive damage to the surface of the paving stones. These are closely related to the very special design and mode of operation of such a modern high-pressure cleaner.

It produces a quasi-scalpel-like water jet, which causes a punctiform load on the surface of the paving stones. In practice, however, the surface of the paving stones is very often not up to the extreme punctual form of load.

The pressure of the high-pressure cleaner can be adjusted, so you can try it on a small area of paving stones.

Cleaning and Sealing Paving Stone

Suitable and unsuitable means

Plate lawn rakes are made not only of plastic but also of medium strength steel. Each of the materials has its own strengths, and the choice of a particular type of tool depends primarily on the tasks assigned to it. The main problem with plastic lawn nozzles for rake is that they break down very quickly, especially when used regularly. However, one should also take into account the fact that plastic variants are much more affordable than products made of steel. Therefore, if the site is not supposed for intensive agricultural work, and the rake is needed only for raking leaves, it is best to choose the option of plastic. If the area is too large and there are acorns and stones on it, then it is better to give preference to the metal model. It should be noted that there are also models in the market that successfully combine metal and plastic parts. They are functional and durable. Suitable means for cleaning paving stones are the chemical and biological means already listed at the beginning and named accordingly, as well as of course tap water, which has been appropriately mixed with soda and enriched. Stone and pavement cleaners, concrete cleaners on a chemical basis, but also purely biologically based algae, moss and lichen cleaners, are proven and for use in cleaning pavers, well-recommended types of means. But also acidic types of modern stone and concrete cleaner, have proven themselves well today. As mechanical or mechanical types of aids for cleaning paving stones, can be definitely recommended today, among other things:

  • the so-called joint crater,
  • the hard root brush,
  • the spatula or also
  • the cutter knife,
  • the propane torch,
  • the hard surface cleaner

On the other hand, the high-pressure cleaner and the various versions of the so-called stone cutter are definitely unsuitable.

  • With soda

Popular is the above-mentioned cleaning of the paving stones with soda. Add 1 to 2 tablespoons of soda to 1 liter of water and let the mixture act on the pavement for about 5 hours. Safety goggles and gloves must be worn. Avoid contact with skin and eyes.

  • With soft soap

Softsoap is mixed with lukewarm water and high-quality stone oil. This mixture is then left to act on the plaster to be cleaned for at least half an hour, after which it is simply rinsed off. The effect is convincing.

  • With baking soda

Sodium bicarbonate is also popular and proven as a stain remover, not only on textiles but in practice also on stone. For this purpose, sodium bicarbonate is sprinkled on the plaster to be cleaned and, after a maximum reaction time of 30 minutes, simply rinsed off again with clear cold water.

  • With vinegar

Today, paving stones and also normal types of concrete slabs can be cleaned quickly and easily with vinegar. Vinegar is mixed with water in a ratio of 1:1 and then spread over the pavement to be cleaned with a hard scrubbing brush. After a reaction time of at least half a day, the mixture can be rinsed off.

  • Impregnate the paving stones

Impregnating paving stones and sealing them appropriately can be done today in practice with a simple paint roller and with the appropriate, very different types of agents that are available for different types of stone in any hardware store today

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