Basalt stones in the garden - cutting and laying

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If stones are to be laid on the terrace or on a garden path, then the volcanic rock basalt can be found here. Because basalt stones are insensitive and very hard and are therefore suitable for areas that are exposed to a greater load. In addition, the stones can be easily processed. They can be sanded, polished, brushed, grooved and sawn, so that every garden owner can create his own special touch on the terrace and the paths.
Various basalt stone sizes and types
Basalt stones in the garden can be very diverse. Because they are available in different sizes. Who wants to do a lot of work, takes the small dimensions, as they are also found in the cobblestones. Anyone who wants to finish building the new terrace or the garden path quickly can also opt for polygonal panels that are considerably larger in circumference. The hobby gardener must then decide between the different treatment techniques of the basalt stones, because they are offered commercially as follows:

  • polished
  • sandblasted
  • brushed
  • polished
  • Variants of several of these methods are also available
Tip: When going to the hardware store, you should not only pay attention to the appearance of the basalt stones. Some treatment techniques make the stones slippery, which could be a problem in the garden on the way or the terrace, especially in the wet.
Required material
Who wants to create a path or a terrace of basalt stones, of course, in addition to the stones, other material that needs to be processed. Likewise, various tools are needed for the construction. Before you can start, the following materials and tools should be purchased or collected:
  • enough basalt stones for the path or the terrace
  • calculate the square footage in advance
  • cement
  • sand
  • Gravel or gravel
  • basalt sand
and as tools
  • spade
  • rubber hammer
  • guide
  • spirit level
  • Jogger
  • a lath to peel off
  • Concrete mixer, if available, otherwise use a wheelbarrow for mixing
  • Shovel for mixing
  • water hose
  • Circular saw with diamond wheel, if the basalt stones have to be cut
Tip: If you want to lay out a large terrace area and one or more paths with basalt stones, it is worthwhile to rent a concrete mixer in a local tree market, because in such a case the amount of concrete to be mixed in a wheelbarrow would be too much effort,
First steps
Stake the desired paths and the terrace size and calculate the total square footage. Only then drive into the hardware store and get the desired amount of material and stones. Then the procedure is as follows:
  • cut out the entire soil in the staked area with a spade
  • At least 40 cm, so that frost resistance and thus long durability is guaranteed
  • here later comes the substructure
Tip: Do not dispose of the excavated soil directly, but use it for other areas in the garden, for example to create new beds or to replant pots.
The foundation requires gravel or gravel. Before this area is poured up, compact the excavated area well with a vibrating machine. Then proceed as follows:
  • Pour gravel / gravel a hand wide
  • distribute well and evenly
  • then compress again with the vibrating machine
  • As a result, the surface of the substructure is not only compacted but also straightened again
Now the cement must be mixed with sand and water to a concrete mass. Use the concrete mixer or alternatively the wheelbarrow and a spade or a shovel. If the concrete has the desired consistency, the bed for the basalt stones is poured:
  • Pour about 10 to 20 centimeters of concrete on the gravel, depending on how tall the selected stones are
  • there should later be a straight line between the path or terrace and the surrounding ground
  • only mix and pour in as much concrete as needed for the next step
  • remove with a crossbar so that a straight surface is created
  • If in doubt, check with the spirit level
  • Carefully lay the bar on the concrete and place the spirit level on it
Tip: Think about the time needed to tidy up the basalt stones. Then measure the size that is poured with concrete. Because if the concrete becomes hard because it works too slowly, the stones can no longer be embedded.
Lay basalt stones
Before the basalt stones are laid on the fresh concrete, the edge should be measured with a guideline. It will not go wrong. Then lay the stones one after the other along the guide line and make sure that the stones are evenly spaced. When installing also make sure that all basalt stones have the same height.In the edge along the stones concrete is poured again, so that they can not slip here. When laying the stones should still be paid to the following:
  • so that an appealing and same pattern is created, always from outside to inside
  • Toss basalt stones directly with a rubber mallet
  • then the joints between the stones with a lot of water and basalt sand
Tip: When laying the basalt stones in the garden, ideally work with a spirit level. So it can be assumed that the stones were all used at the same height and no stumbling edges.
Last steps
After the garden path or the terrace has been completely laid out with basalt stones, the surface should be carefully swept so that the basalt sand does not leave unsightly scratches on the new stones. Then work the entire stone surface again with the vibrator. Thus, a greater strength of the individual stones is achieved than could be done with the rubber mallet.
Cut basalt stones
When laying, due to the shape or size of the path or the terrace, it may also be necessary to cut the basalt stones to the correct size. But this is not a problem either:
  • Use circular saw with diamond disc for hard material
  • when cutting, cool the cut well with water from the garden hose
  • When cutting, the interface must not heat, shine or even melt in the worst case
Tip: The hobby gardener should take help in the case of cutting the basalt stones a family member for water cooling.
Basalt stones for the garden
Panels for a patio or walkway are available in many different sizes and also as polygonal panels. Also, the surface can be made very different, there are ground, polished, flamed, brushed, sandblasted or stacked plates and also plates that have been treated with several such methods. Also, the thickness of the basalt plates is different, thinner plates are often only a few millimeters thick, while others are more than one centimeter thick.
Basalt is mined in Germany, particularly well known are the Londorf basalt lava, which is obtained in the Hessian Londorf and the Mayen basalt lava from Rhineland-Palatinate. The Londorf basalt lava is gray-black, while the Mayen basalt lava has a bright gray-blue color. As a floor covering, such panels are very noble both indoors and outdoors. With larger basalt stones that are best left untreated, a pond can be made very nice and thicker paving stones are often used for garden paths or the courtyard. Basalt stones absorb hardly any water and are therefore frost-proof.
Prices for basalt stones
At a thickness of three centimeters, basalt tiles cost around 50 to 60 euros per square meter. Basalt chippings can be used in the garden like gravel, a bag of 25 kilograms costs about five euros. Basalt paving stones are calculated by weight. They cost between 200 and 400 euros per tonne. Depending on the thickness of the paving stones, one ton will suffice for an area between three and nine square meters. If you want to save a little bit, basalt stones can also buy used from many providers.
Home gardeners, who have a lot of time and fun at work, will not have a problem creating a terrace or garden path with basalt stones. Of course, the work takes several days in large areas, as the basalt stones in the garden are all laid individually and knocked with a rubber mallet. But any hobby gardener, who looks behind his terrace and the garden paths, will be rewarded with the beautiful sight for his work.

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