Levelness
Dips and bumps show as ripples and spots where water collects. Levelling the ground before laying is the first step.
Base and drainage
Artificial Grass Base Preparation and Drainage in Riyadh: The Base Decides the Result
The beauty of artificial grass starts beneath it. An uneven floor or one without drainage means puddles, ripples, odour and weeds at the edges. Here we explain the preparation steps: levelling, compaction, the stone layer, the membrane and drainage outlets, and what differs between a ground-level garden, a roof, a balcony and a small pitch. We supply and fit grass after a free site visit inside Riyadh.
A result that lasts longer
A sound baseRows are worked out before the first cut
Free site visitWe check the floor and drain outlets
Supply & fittingGrass in several pile heights
Gardens and roofsBalconies and small pitches
Open daily7 AM to 10 PM
Why the base?
Why does what lies under artificial grass matter more than many people think?
Artificial grass is a relatively thin layer that follows exactly what lies beneath. Any fault in the ground shows on the surface after fitting, and fixing it then means lifting the grass and redoing the work. Good work therefore starts with the ground, not the green.
Drainage
Rain, irrigation or washing water must find a way out. Without it puddles and smells form and the adhesive layer suffers.
Stability
A compacted base prevents settling over time and keeps the surface level after years of walking and play.
Weed control
A suitable membrane beneath the layers reduces weeds rising from the soil to the edges and seams.
Sandy soil
In many parts of Riyadh the soil is sandy and loose, so it needs good compaction and a stable layer before laying.
Edges and fixing
Edges defined with a firm material such as a kerb, paving or a frame stop the grass moving and give a tidy look.
Base layers
Which layers are prepared before the grass is laid?
Details differ from site to site, but the idea is the same: a level, compacted and well-drained surface. We set the details after the visit according to the type of floor and the use.
Clearing the surface and levelling
Plants, loose soil and debris are removed and the ground is levelled with a slight fall that directs water to a drain or the edges of the site. The exact fall depends on the place, and we measure it with instruments rather than judge by eye.
Compaction and the stone layer
The ground is compacted and a layer of coarse crushed stone is laid and compacted to a thickness the use decides. It is the basis of stability and drainage in gardens and pitches. Light use may need less than a busy pitch.
The weed membrane
It goes over or under the stone according to the design and stops weeds rising while letting water through.
The final levelling layer
A fine layer is levelled and compacted to give a perfect surface for the grass, which is then laid, cut, joined at the seams and fixed at the edges. The laying steps themselves are in artificial grass installation.
Infill with sand or suitable material
Some types need a light infill between the blades to hold them upright, and some do not, depending on the product instructions and the use.
By location
How preparation differs between garden, roof, balcony and pitch
| Usual base | Drainage and notes | |
|---|---|---|
| Ground-level garden | Levelling, compaction, stone layer and membrane | A fall towards the edges or an existing drain |
| Roof | The waterproofed concrete surface itself, usually without a lot of stone | Use the existing roof outlets and never block them |
| Balcony | The balcony floor itself after cleaning and checking the fall | Leave the water channel open and measure height at the door |
| Small pitch | A stronger, compacted base and a stone layer suited to the load | Good drainage and firmly fixed edges |
Examples
Sites with different preparation
Villa gardens
Levelling and compacting the ground and directing water to drains prevents puddles and keeps the surface level; see garden artificial grass.
Roofs
We keep drain outlets clear and avoid overloading; more in rooftop artificial grass.
Balconies
Small spaces need accuracy in measuring and fall. See balcony artificial grass.
Work sequence
Five stages of ground preparation
Visit and measure
We check the fall, drain outlets and soil or concrete and decide the preparation needed.
Level and compact
Remove loose layers, level the ground and compact it to the right fall.
Stone and membrane
A compacted base layer and a weed membrane according to the site.
Laying and seams
Cut the grass, align the blades in one direction and join the seams carefully.
Edges and handover
Fix the edges, clean up and test drainage with water before handover.
Cost factors
What raises or lowers the cost of preparation?
We give no fixed figures because every site is different, but these are the factors we use to price a quote after the visit.
Current condition of the ground
A level, solid site needs less work than a low sandy plot that needs filling, compacting and levelling.
Area and ease of access
Large areas usually lower the rate per metre, while hard-to-reach sites such as roofs need effort to carry materials.
Amount of material needed
The thickness of the stone layer, membrane and edging changes with use; a children's play area differs from an ornamental garden.
Removing old grass and debris
Lifting old grass, rubble or shrubs is a separate item that should appear in the quotation.
Common problems
Problems that come from a weak base
When we inspect older installations, most complaints are not about the quality of the grass but about what is under it.
Puddles after rain or washing
Usually a dip in the ground or no fall. It is fixed by re-levelling the affected part and sometimes lifting the grass over it.
Ripples and bubbles
These come from an uncompacted base, an uneven floor or expansion without enough edge fixing.
Unwanted odour
It can come from trapped water or organic matter under the grass. Good drainage and periodic cleaning reduce it. See artificial grass maintenance.
Weeds in the seams
No membrane or weak seam bonding lets weeds appear. We treat it with a suitable layer at preparation.
After installation
Simple habits that protect the base after handover
A good base needs only simple protection to do its job for many years.
Keep drain outlets clear
Remove leaves and dust that gather at outlets and channels so water is not trapped.
Avoid concentrated heavy loads
Heavy fixed furniture or large tubs can compress the base over time, so use wide supports.
Rinse the grass lightly
A light rinse removes dust and odour, while heavy repeated washing on a poorly drained site can cause pooling.
Watch the edges
A raised edge or a small gap is dealt with early by fixing it again before it widens and moves.
Roofs
Roofs: waterproofing and drainage come first
A building roof has a waterproof layer beneath the floor and must not be punctured or allowed to collect water above it. On roofs we therefore check the concrete fall and drain outlets and keep them open, and lay the grass in a way that does not harm the waterproofing.
If the roof already leaks it is better to treat it before fitting, because grass does not solve a waterproofing problem. It also helps to know what loads and furniture the roof can carry. Roof details are in rooftop artificial grass.
- Never block roof drain outlets
- Treat any leak before laying
Ask before you sign
Six questions to ask any artificial grass contractor
Clear answers to these show the seriousness of the work and help you compare quotes.
How will water drain?
Ask them to explain the fall and outlets and show where the water leaves.
What are the base layers?
Is there compaction, a stone layer and a membrane, or is grass laid directly on the ground?
How are edges handled?
Fixing, limiting movement and the look at walls and paths.
How are seams joined?
Poor seam quality shows over time if not done well.
What grass type and height?
Pile height and density and whether they suit the use. See the heights guide.
What does the price include?
Preparation, materials, labour and disposal of debris, and what is charged separately.
Cases
When is simple preparation enough and when do you need a stronger base?
Simple preparation
A hard floor that is already level, such as a balcony or a concrete roof with the right fall, may need only cleaning and careful laying.
A medium base
A lightly used garden over compacted soil needs levelling, a stone layer, a membrane and edging.
A strong base
Children's play areas, small pitches and heavy-use sites need a deeper base. See mini football pitch grass.
Estimate the area
Estimate the site area before asking for a quote
Enter the length and width of the site to get its approximate area, then send the result on WhatsApp with photos of the floor and drain outlets.
0Area (m²)
0Suggested order (m²)
Common questions on preparing the ground for artificial grass
Can artificial grass be laid directly on soil?
We do not advise that on most sites. Uncompacted soil settles and ripples appear, and there is no organised drainage. Layered preparation is the safer way. Saving on preparation looks attractive at first but often costs more when work is redone months later.
Can it be laid over tiles or concrete?
Yes in many cases, after checking the fall and drainage and cleaning the surface, and a layer beneath may be needed depending on type. In every case we prefer to see the site ourselves rather than rely on description alone.
How does water behave under the grass?
Outdoor artificial grass has drainage holes in the backing so water passes into the base and then to the edges or drains, which is why fall and base are essential. No existing drain outlet is blocked during installation.
Will the grass show problems after rain?
If the base and drainage are sound, water does not collect. If puddles appear, there is usually a dip that needs treating.
Is a stone layer needed on a balcony or roof?
Usually not, because the base is solid concrete. What matters is the fall and keeping drains open. We check this during the visit.
Can natural grass grow through artificial grass?
It can at seams and edges if no suitable membrane is used, which is why we include a membrane in the preparation of ground-level sites.
How long do preparation and fitting take?
It varies with area and ground condition, from a day on small spaces to several days in big gardens. We set the time in the quotation after the visit.
Is preparation included in the fitting price?
This varies, so the quotation states whether preparation, levelling and debris removal are included or separate.
Do you offer a free site visit?
Yes inside Riyadh. We measure the place, check the floor and drainage, then send a quote by phone or WhatsApp.
Related sections you may like
Artificial GrassArtificial grass for gardens, roofs and pitches, supplied and fitted
Artificial Grass Installation RiyadhLaying, seaming and fixing steps
Garden Artificial Grass RiyadhArtificial grass for villa gardens and rest houses
Rooftop Artificial Grass RiyadhArtificial grass for roofs and terraces
Balcony Artificial GrassCovering balconies with artificial grass
Artificial Grass PricesWhat factors decide the price
A sound base for artificial grass that lasts: book a free visit
Send photos of the site and its approximate size on WhatsApp and we will arrange a free visit inside Riyadh to check the floor and drainage.
More guides and services you may need
Grass Heights Guide
How to choose the pile height and density that suit the use.
Artificial Grass Maintenance
Cleaning and caring for grass so the floor stays in good shape.
Artificial vs Natural Grass
Comparing cost, upkeep and use in the Riyadh climate.
Grass Around Pools
Drainage and slip considerations around swimming pools.