Why Har-Tru Clay?

Har-Tru is a brand of green clay tennis court surface made from crushed metabasalt — a naturally occurring green stone quarried in the eastern United States. It has been the standard for green clay courts in North America since 1950 and is the only American-made clay court surface approved by the USTA for sanctioned tournament play.

Red clay (used at Roland Garros) is made from crushed brick and is significantly slower and heavier than Har-Tru. Har-Tru's crushed metabasalt is lighter, drains faster, and requires less water to maintain. It plays faster than red clay but slower than asphalt — the sweet spot for most club and recreational players.

Har-Tru also dries faster after rain — typically playable within 30–60 minutes of a shower, compared to several hours for red clay.

Yes. Har-Tru is USTA approved for all levels of sanctioned tournament play, from local club events through to national championships. It is the only American green clay surface with this approval. CourtCraft installs to USTA specifications on every project.

A new Har-Tru court installation typically takes 3–5 weeks from groundbreaking to first play, depending on site conditions, drainage requirements, and weather. The base preparation is the most time-intensive phase — the clay surface itself is applied in the final days. We'll give you a detailed timeline in your quote.

In some cases, yes — but it depends on the existing base condition and drainage. A proper Har-Tru installation requires a specific base system with adequate drainage. We assess every existing court before recommending conversion vs. new construction.

If the existing base is sound and drainage can be added, conversion is often more cost-effective than a full rebuild. We'll tell you honestly which option makes sense for your site.

Har-Tru courts require a perimeter drainage system and a properly graded base that allows water to move off the surface quickly. The standard system uses a crushed stone base layer over a drainage membrane, with perforated pipe around the perimeter. CourtCraft designs the drainage system to your specific site conditions — soil type, slope, and local rainfall patterns all factor in.

Har-Tru courts require daily maintenance during the playing season — watering, brushing, and rolling. This takes approximately 20–30 minutes per court per day. The surface needs to be kept moist enough to bind but not so wet that it becomes soft.

Annual maintenance includes adding fresh Har-Tru material to replenish what's lost through play and weather, and checking the lines and net posts. CourtCraft provides a full maintenance guide with every installation.

Har-Tru is a forgiving surface — minor damage from drought, heavy rain, or heavy use can be repaired by adding fresh material and re-rolling. Unlike asphalt, which requires full resurfacing when cracked, Har-Tru damage is typically spot-repairable. CourtCraft offers maintenance service contracts for clubs that want professional upkeep.

Most courts need a fresh top-dressing of Har-Tru material every 1–3 years, depending on usage intensity and maintenance quality. A heavily-used club court may need annual replenishment; a private court with moderate use might go 3 years between top-dressings. We'll assess your court and recommend a schedule based on actual wear.