Paving grid WG16

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  • Plastic paving grid (WG16) produced by WARCO is considered to be a particularly stable and a durable product.
    close Plastic paving grid is considered to be a particularly stable and a durable product.

    Plastic
    stabilising grid

    WARCO recommends the grid as a base course for safety and terrace tiles, ball game playing areas and patios. What is crucial here, is the opportunity of saving, in many cases, on complex structures of a conventional subfloor consisting of several layers of compacted grit, gravel and sand.

Building an innovative, unbound subfloor with a plastic stabilising grid

The key element in the innovative construction is the use of the plastic stabilising grid (grass grid) for soil stabilisation. This product should be installed under the WARCO tiles and filled with gravel mix. It takes on partially the function of the base course throughout absorption of the dynamic and static forces that have impact on the surface.

The plastic stabilising grid by WARCO has a load capacity of 160 t/m. Therefore, the thickness of the base course and frost-protective layer (installed if necessary) can be significantly reduced in comparison to the conventional construction. This saves costs and improves the stability of the superstructure.

Building an innovative subfloor in six easy steps

1. The first step
Analogically to the traditional construction, firstly, it is necessary to remove (dig out) the existing soil, to prepare the newly constructed, enhanced innovative superstructure — frost-protective layer (if required) + reduced base layer + plastic stabilising grid (4 cm) + WARCO tiles.The strength of the superstructure depends on the foreseen overload of the tiles and the type of the existing soil.


Frost-protective layer (installed if necessary)
+ reduced base layer
+ plastic stabilising grid (4 cm)
+ surface made of WARCO elastic tiles
___________________________
= total thickness of the subfloor

  • Plastic stabilising grid filled with thick sand or gravel makes the central element of an innovative, unbound subfloor.
    close The important element of an innovative subfloor for WARCO rubber tiles is a plastic stabilising grid filled with thick coarse sand or gravel.

    Plastic stabilising grid as the key element

    The plastic grid filled with thick sand, grit, or gravel makes the central element of the innovative subfloor for elastic WARCO tiles. It stabilises the floor and evenly shares dynamic and static impact exerted on the surface.

2. The second step
The next step would be the preparation of a sub-base, namely, the adjusted surface that should be planned and (if necessary) compacted with a vibrating plate or a roller to ensure its optimal stability. For this task, the soil should be neither too wet nor frozen.

At the installation of the sub-base, we must take into account any potential inclination of the subsequent layer (made of safety tiles, terrace tiles, interlocking pavers). The sub-base should be parallel to the top layer, according to the same gradient. The level of tolerance under the 4 m levelling board is ± 2 cm.

  • Through evening and compacting the existing soil, we can prepare the base for the proper subfloor which is optimal for installing WARCO tiles.
    close We can prepare the base for the subfloor for WARCO rubber tiles by evening and compacting the existing soil.

    Preparing the surface for the installation of WARCO tiles

    An important step in preparing the appropriate subfloor for WARCO rubber tiles is to even and compact the existing soil. In this way, an innovative unbound base layer is going to be prepared for the installation.

In case of largely and only slightly water-permeable sub-base, water will seep through the upper surface of the superstructure and it will go to the ground water in the subsurface. In a poorly water-permeable or impermeable foundation or base respectively, there is (if appropriate) created a sub-base drainage in order to avoid damage caused by the backwater.

3. The third step
It depends on the local conditions whether a frost-protective layer should be installed. In most cases, as far as garden or landscape architecture is concerned, we may resign from such a solution. The same is true for the regions with moderate ‘minus’ temperatures in winter. The final decision about its application is based on the individual situation of the construction site and the intended use of the area.

The frost-protective layer is applied in the thickness ranging from 10 up to 30 cm; moreover, it should be exactly parallel in height and a manner of inclination; it also ought to be well compacted.

  • Depending on the local conditions, it is recommendable to install a frost proof layer with the thickness of 10 up to 30 cm before laying WARCO rubber tiles.
    close It depends on the local conditions if we need to install a 10 to 30 cm-thick frost proof layer under WARCO rubber tiles.

    Frostproof layer under WARCO tiles

    It depends on the local conditions if we need a frost proof layer as a part of an innovative unbound subfloor. If we opt for it though, it should be well compacted, and have the thickness of about 10-30 cm.

Concerning the choice of material destined for the frost protection layer, it is essential to make sure that it is permanently water-permeable. Therefore, a recycled material which decays over time and forms a water-impermeable layer is unsuitable. Instead, we may use 0/32-mm-gravel or grit.

4. The fourth step
The function of the base-course is partially taken up by the stabilising grid. Therefore, omitting of the installation of the proper base course which sometimes occurs, may drastically reduce the stabilisation of the surface.The assembled base-course should be permanently water permeable, perfectly flat, carefully compacted and created with an incline on its top layer. The recommended material for the subfloor are mineral mixtures with the values 0/32, 0/45, 0/56 or gravel-sand mix.

  • It is not recommended to install WARCO rubber tiles directly on sand or soil—first, a layer of the sand needs to be dug out to prepare the subfloor for further steps.
    close WARCO rubber tiles can be installed on a compacted layer of grit, gravel or thick sand on which we place a plastic stabilising grid.

    Preparing the sandy layer

    It depends on local conditions, how much sand should be dug out to prepare an appropriate and stable subfloor. Only if the surface is well evened out, we can place a layer of compacted grit, gravel or thick coarse sand that would serve us a part of stable subfloor under WARCO rubber tiles.

When installing the subfloor it is recommended to place iron pipes as runners in the ground to ensure an even layer of grit or gravel. In this way, using simple means and by meticulous work, a smooth and level subfloor can be installed.

5. The fifth step
Depending on the choice of the floor structure, WARCO plastic stabilising grid should be placed on the base course. Small spikes and a locking mechanism integrated in the grid stabilise the product in the ground, also when it is not perfectly even. In the 4-cm-thick stabilising grid, gravel mix (fraction of 1/3) is very carefully and precisely assembled on the surface of the grid.

  • During installation, WARCO plastic grid must be carefully filled with thick, coarse sand or gravel.
    close Next, we lay the WARCO plastic grid and fill it carefully with thick sand or gravel.

    Installing and filling the plastic grid

    WARCO plastic grid is stabilised through the integrated securing system of spikes underneath it. The grid must be carefully filled with thick sand or gravel and it should be evened out.

Important: the base layer made of the stabilising grid should be slightly protruding, that is why we should plan the surface made of plastic stabilising grid slightly larger (3 - 10 cm on each side) than the intended, installed subfloor.

6. The sixth step
WARCO tiles can be laid only on the properly installed bedding. The subfloor should be simply laid, not additionally bound with the base layer. During the montage, please refer to the installation instructions for the respective product.

  • Rubber WARCO tiles can be laid on a compacted layer of grit, gravel or plastic grid with thick sand, without gluing or fixing it to the subfloor.
    close Elastic tiles or pavers from WARCO can be laid directly on the existing subfloor without gluing or fixing it to the existing surface.

    Laying elastic tiles or pavers

    Elastic tiles and pavers from WARCO can be simply laid directly on the prepared innovative subfloor. It is not necessary to fix it to the existing surface, so the installation is carried out quickly and easily.

If the area should be bordered with palisades, elastic curbs, or other types of edging, the installation of those bordering elements should be made parallel to the structure of the upper layers of the subfloor. In case of i.e. elastic curbs, a special built-in concrete support must be provided.

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