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Installation - Artificial Clay | ColourWorks

Installation – Artificial Clay

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Surface Installation - Artificial Clay

Installing – Artificial Clay Tennis Surfaces

  • We install Har-Tru & Tru-Clay Surfaces
  • Durable Surface with Minimal Maintenance.
  • All-weather Playability.
  • Sliding Comfort that Reduces Injuries.
  • Easy Installation over Existing Surfaces.
Clay Tennis Courts

Clay courts are made of crushed shale, stone or brick. The French Open uses clay courts, making it unique among the Grand Slam tournaments.

Two types exist:

  • Red Clay – the more common variety.
  • Green Clay.

Although less expensive to construct than other types of tennis courts, the maintenance costs of clay are high as the surface must be rolled to preserve flatness. The water content must also be balanced; green courts are often sloped in order to allow water run-off.

Red Clay
Almost all red “clay” courts are made not of natural clay but of crushed brick that is packed to make the court. The crushed brick is then covered with a topping of loose crushed particles. This type of surface does not absorb water easily and is the most common in Europe and Latin America.

The crushed brick surface was introduced by a British firm, En Tout Cas, in 1909, to address the drainage problem of the clay surface. The crushed brick surface allowed more water to run through the surface of the court drying the surface more quickly after a rain.

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Green Clay
Also called American Clay and the brand name Har-Tru, is similar to red clay, but is made from crushed basalt rather than brick, making the surface slightly harder and faster. Green clay is packed to make the subsurface. It is then covered with a topping.

There is one WTA tournament played on green Har-Tru clay courts, the Volvo Car Open in Charleston, South Carolina.

Hybrid Clay Surfaces

Known as Artificial Clay or Hybrid Clay Surfaces.
An increasing number of varied surfaces are being introduced to the market that are designed to have the playing qualities of clay but without the climatic limitations and demands for high levels of maintenance.

Primarily, but not exclusively, based on some form of synthetic turf or textile carpet they are dressed with a variety of material including traditional clays, rubber granules and coated sands.

Player feedback on some of the products has been very positive to date and these types of surface are seen as an existing new development for the tennis court industry. In terms of construction most are based on similar base constructions to artificial grass surfaces, only the top surfacing really differing.

The marking is done using lines cut into the carpet. Therefore, the lines do not need to be removed in the Autumn and replaced in the spring.

They can also be installed on top of existing macadam courts if required.

Artificial Clay surfaces can be a good option as its playing qualities are identical to real clay.

They have several advantageous playing characteristics:

  • Consistently slower ball bounce than other surfaces.
  • Longer rallies and a greater variety of strokes for a more controlled game.
  • ITF court pace 2 medium/slow rating.
  • Granular surface acts as a shock-absorbing cushion.
  • Players can slide into their returns, this prevents joint jarring stops.
Har-Tru Clay Courts

Har-Tru is actually composed of Crushed Stone.
Har-Tru is made from billion-year-old Pre-Cambrian metabasalt found in the Blue Ridge Mountains of Virginia. It is a natural green stone that is extremely hard and angular, two very important qualities when it comes to tennis court construction.

The angularity helps the stone particles lock together to form a stable playing surface.. It is more durable and more consistent than other clay court counterparts.

Generically referred to as “fast-dry,” Har-Tru dries quickly after a rain. It also allows play to continue through light rain.

Har-Tru (above ground irrigation) or Hydrocourts (Har-Tru courts with sub-surface irrigation), consist of a modified stone base with a layer of stone dust followed by a final surface layer of Har-Tru.

(Visit – Har-Tru – History)

Har-Tru courts provide a flexible, shock-absorbing surface, which eases stress on the feet, back and legs during play. The softer surface also slows the play speed, resulting in longer rallies, more varied strokes and a more controlled game.

Had-Tru a great surface for learning to play tennis. Courts require daily maintenance to sustain consistent playing conditions. Nonetheless, the advantages they offer have increasingly made them the tennis court of choice for tennis clubs, and private residences.

Tru-Clay Hybrid Clay Courts

TruClay is a synthetic, polypropylene membrane with a clay infill.
The system can utilise Har-Tru or French clay infill; the same clay used at Stade Roland-Garros for the French Open Grand Slam. Tru-Clay is often referred to as Clay-Tech within Europe.

(Visit – Har-Tru – Surfaces)

The clay-topped surface prevents holes and cracks and the polypropylene membrane and clay top layer, contributes to a long life, attractive, uniform, sliding court surface.

The ITF has recently created a Hybrid-Clay category which TruClay falls into. As with real clay courts, the court pace is Slow Category 1.

Tru-Clay System
The unique overall structure of TruClay ensures consistent ball bounce, even on the lines of the court. Guarantees speed and performance, which is not possible with traditional clay surfaces. Another substantial advantage of TruClay is that the surface is playable soon after a rainfall.

Requiring minimal maintenance and annual expense, the surface facilitates water absorption and drainage, so that water consumption is considerably reduced.

The marking is done using PVC-Lines. Therefore, the lines do not need to be removed in the Autumn and replaced in the spring.

Moreover, it can be used to convert an existing hard court (even in poor condition) into a clay court.


Plexipave UK represents Har-Tru Products in the UK & Ireland and is the exclusive Authorised Agent and Installer for;

  • Har-Tru – Clay Courts.
  • Tru Clay – The Next Generation of Artificial Clay.

(More Information – Plexipave UK – Har-Tru)

(More Information – Plexipave UK – Tru Clay)

Surface Installation - Artificial Clay