Post-Tension Concrete vs Asphalt Tennis Court: Which Fits Florida Soil?

An asphalt court is a hot mix pavement laid over a compacted stone base. Mor-Sports' standard asphalt build uses a laser-graded lime rock sub base set to ASBA grades and slopes, a laser-paved hot asphalt base, an optional cushion system, then acrylic color and lines. The American Sports Builders Association's Tennis Courts Construction and Maintenance Manual (11th edition, 2024) gives asphalt courts their own chapter, including control joints and finished pavement tolerances.

A post-tension (PT) court is a single concrete slab with a grid of steel cables cast inside. After the concrete gains strength, crews stress the cables, squeezing the slab into compression. ASBA's construction guidelines call PT the preferred method for concrete courts because a full court can be poured in one piece with no expansion joints in the play area, which limits surface cracking. That guideline (as republished by coatings maker Nova Sports) calls for cables no more than 4 feet apart, a 10 mil vapor barrier, concrete of at least 3,000 psi, seven days of moist curing, and strand spacing that accounts for the site's soil.

The Post-Tensioning Institute's court-specific guide is PTI DC10.3-20, Design, Construction, and Maintenance of Post-Tensioned Concrete Courts(published October 2020). It covers subgrade prep, drainage, tendon stressing, inspection and maintenance. You may also hear of PTI DC10.5-24, the standard for PT foundations on expansive and stable soils. That's a building foundation standard. For a court, DC10.3 is the document to ask your engineer about.

We build both in our tennis court construction work, so the ground decides, not us.

Much of peninsular Florida sits on flatwoods soils. UF/IFAS describes flatwoods as level ground where the water table rises to within 5 to 20 inches of the surface at least once a growing season, and many of these soils have an organic hardpan 12 to 40 inches down. UF/IFAS also notes that most Florida Spodosols are poorly or very poorly drained, including Myakka, the official state soil.

Water is the enemy of any court base. ASBA guidance lists inadequate drainage, improper slope, base movement and poor compaction as causes of asphalt cracking, and says that where those conditions exist, reconstruction may be needed instead of repair. It also ties depressions to decaying organic matter or poorly compacted subbase. That's why a Florida court should sit above the surrounding ground, with swales or drains carrying water away.

The U.S. Geological Survey notes that Florida is largely underlain by limestone and highly susceptible to sinkholes. The Florida Geological Survey explains that slightly acidic groundwater slowly dissolves cavities in the limestone, and the ground above can either sag (cover-subsidence) or drop suddenly (cover-collapse). Its sinkhole FAQ lists likely triggers including drought followed by heavy rain, construction earthwork, heavy loading and heavy groundwater pumping.

Be realistic. No court system stops a true sinkhole. What PT concrete does better is bridge small soft spots and uneven settlement, because the compressed slab acts as one stiff plate. A design and engineering firm writing on court systems says PT can span unstable soils where asphalt would fail, and PTI says PT slabs resist the stresses that soil movement puts on them.

Asphalt is flexible pavement, so cracking is expected over its life. ASBA's guidance on asphalt court problems notes that asphalt shrinks as it ages and that overlays may not stop major cracks from coming back through. GMB notes that ASBA recommends saw-cut joints in asphalt courts to steer cracking outside the play area, but new cracks can still form inside it. The USTA warns that paving new asphalt over a cracked court lets the old cracks reflect up through the new layer.

• Asphalt: The USTA puts asphalt court lifespan at about 15 years. GMB describes the usual pattern: crack repair before the first resurfacing, larger repairs around year 10 or 11, and owners weighing full replacement by year 15.
• Post-tension concrete: GMB puts PT life expectancy at 25 years or more, with some courts lasting 30 years with only resurfacing.
• Both: The acrylic color system on either base needs resurfacing on a regular cycle. GMB estimates about every five years. See our guide on how often to resurface a tennis court for the signs.

GMB also estimated downtime over 25 years at up to 79 days for asphalt versus about 12 days for PT. For a busy HOA or club, lost court days are a real cost. For more on surface life by material, read our tennis court surface durability comparison.

Mor-Sports Group has built courts across Florida and Southern Alabama since 1986, and our self-performing crews won a 2026 ASBA Distinguished Facility Award in the Tennis and Pickleball Facility category for Regency at Babcock Ranch. Request a free estimate and we'll help you choose the right base for your ground.