Artificial grass can sometimes be laid over an existing concrete or paved surface, but the condition and drainage of that surface need to be assessed first. A hard base that is cracked, uneven or unable to drain can create problems that the turf will not hide permanently.
The right installation method depends on the site and the artificial grass you choose, so use this guide as a planning checklist rather than a substitute for product-specific fitting instructions.
In this guide
Is the existing surface suitable?
Start by checking that concrete or paving is stable, reasonably even and free from loose sections. Significant cracks, rocking slabs, sharp edges or major level changes should be addressed before covering the surface.
Remember that the finished grass will follow much of the shape underneath it. A visibly uneven patio can still feel uneven after turf is installed.
Check drainage before covering anything
Water needs a route away from the grass. Look at the existing falls and drainage points, ideally during or after rain. If water already ponds on the concrete, laying turf directly over it may leave water trapped beneath the surface.
Never cover or block necessary drainage outlets. Our artificial grass drainage guide explains the issue in more detail.
Do you need an underlay?
An appropriate underlay may be considered where extra cushioning, separation or surface smoothing is required, but it should be compatible with the grass, site and drainage plan. Do not assume that adding foam automatically fixes an unsuitable hard surface.
If the area is used by children, the required surface performance depends on how the space is used. A decorative lawn surface should not be treated as a certified impact-absorbing play surface unless the complete system is specified and tested for that purpose.
How are the edges secured?
Edges and joins need a suitable fixing method so that the grass does not move or create trip points. The method depends on the perimeter, substrate and product. Avoid improvising with adhesives or fixings that are not suitable for the materials involved.
For general fitting principles, read our artificial grass installation guide.
Can artificial grass go on a patio?
Potentially, yes. Paved patios can provide a firm surface, but inspect joints, movement, levels and drainage. Deep joints or irregular slabs may show through the finished lawn or affect how it feels underfoot.
What about balconies and roof terraces?
These areas have additional considerations, including waterproofing, drainage outlets, wind exposure and building requirements. Do not make permanent changes to waterproof membranes without appropriate advice. Read our balcony artificial grass guide before planning the installation.
Should you remove the concrete instead?
Not always. If the hard surface is sound and drains properly, removal may be unnecessary for some projects. If it is badly damaged, holds water or creates unsuitable finished levels at doors and thresholds, removal and rebuilding may produce a better result.
Measure before ordering
Measure the maximum width and length of the area, plan the direction of the pile and consider where joins would fall. Our measuring guide can help you plan roll widths and reduce avoidable waste.
Choosing grass for a hard surface
Compare pile height, density, backing and intended use. A sample is especially useful because the feel of artificial grass over a firm substrate can differ from how it feels in your hand.
Browse all artificial grass, order samples, and check each product's installation information before fitting.