Not installing this layer is typical of a poorly installed lawn so you ll want to make sure you prepare your base thoroughly before laying your grass.
Artificial grass underlay with drainage holes.
Use a foam underlay for artificial grass on concrete and decking although artificial grass should never be laid directly on top of existing grass or soil without a sub base it is possible to install artificial grass on to existing hard surfaces such as concrete paving and decking.
As i suggested above in most cases you shouldn t need a drainage system when buying artificial grass.
Good quality artificial grass is designed to be a fully permeable surface allowing water to drain through the grass.
These installations tend to be very quick and easy to complete.
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This ensures that you will not have water standing on your artificial lawn if it rains.
Laying artificial grass on uneven concrete.
If it does it isn t a major issue but you ll need to drill some drainage holes.
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This will prevent puddling on your new fake grass.
We advise using a 16mm bit to drill holes where any puddles form then fill these holes with 10mm shingle.
Drill holes through the surface using a masonry drill bit and fill them with large pebbles to allow water to get to the layers beneath the concrete.
Artificial grass underlay with drainage holes shockpad for astro fake turf.
Yes artificial grass can be installed on concrete and asphalt that has adequate drainage and the integrity of the concrete hasn t been compromised.
This is because artificial grass comes with its own very effective drainage solution.
You may need to repair minor damage before installing the grass including cracks or gaps larger than a 1 2 craters or low spots.
With a goal of ensuring your fake grass is as close to the real thing as possible a 5mm underlay can help you achieve the best artificial turf solution.
The number of holes you will need will depend on how the water currently drains.
Installing the foam underlay.
Good quality artificial grass when installed correctly should drain rainwater through a drainage base below the levelling layer sand.
If the water does not drain out completely and collects in puddles then drill holes of around 16 mm wherever the water puddles form and fill the holes with shingles of 10 mm.