{"id":3145,"date":"2026-10-16T11:39:40","date_gmt":"2026-10-16T09:39:40","guid":{"rendered":"http:\/\/staging.topgreen.de\/ratgeber\/is-artificial-grass-water-permeable-drainage-sub-base-and-tips\/"},"modified":"2026-10-26T12:45:37","modified_gmt":"2026-10-26T11:45:37","slug":"is-artificial-grass-water-permeable-drainage-sub-base-and-tips","status":"publish","type":"post","link":"https:\/\/topgreen.de\/en\/ratgeber\/is-artificial-grass-water-permeable-drainage-sub-base-and-tips\/","title":{"rendered":"Is Artificial Grass Water-Permeable? Drainage, Sub-base, and Tips"},"content":{"rendered":"\n
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In short<\/p>\n\n\n

Yes, high-quality artificial grass is water-permeable<\/strong>. Rainwater drains away through drainage holes<\/strong> or a permeably coated backing<\/strong>. However, the sub-base<\/strong> is the main factor in determining whether the surface remains dry: In the garden, a compacted gravel-grit sub-base ensures infiltration, while on concrete, tiles, or balconies, a slope<\/strong> and ideally a drainage mat<\/strong> are required. <\/p>\n<\/div><\/div>\n\n

Puddles, moss, and unpleasant odors on artificial grass almost always have the same cause: water cannot drain properly. Here we explain how the water permeability of artificial grass works and what you should look for in the product and installation. <\/p>\n\n

How does water get through the artificial grass?<\/h2>\n\n
Backing type<\/th>Function<\/th>Note<\/th><\/tr><\/thead>
Backing with drainage holes<\/td>Water drains through regularly punched holes<\/td>Widely used for garden artificial grass<\/td><\/tr>
Fully permeable backing<\/td>Water flows away across the entire surface<\/td>Uniform drainage<\/td><\/tr>
Closed backing<\/td>Little or no water drainage<\/td>Only suitable for indoor areas or covered surfaces<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

Read more about the structure of the backing under Backing<\/a> and Backing Coating<\/a>.<\/p>\n\n

The sub-base is the deciding factor<\/h2>\n\n

The best artificial grass is of no use if the water cannot move further beneath it. Depending on the sub-base, the following applies: <\/p>\n\n

Sub-base<\/th>How water drains<\/th><\/tr><\/thead>
Soil\/Garden<\/td>Infiltration through gravel base layer<\/a>, leveling layer, and weed membrane<\/a><\/td><\/tr>
Loamy or compacted soil<\/td>Thicker base layer, additional drainage<\/a> if necessary<\/td><\/tr>
Concrete, pavement, tiles<\/td>Slope<\/a> to the edge or drain, drainage mat<\/a><\/td><\/tr>
Balcony, roof terrace<\/td>Slope, drainage mat, keep drains clear<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

The individual layers and their thicknesses are explained in our guide Artificial Grass Sub-base<\/a>.<\/p>\n\n

What happens if water does not drain away?<\/h2>\n\n