This page covers slab leak repair specifically in Marathon, FL. Parent pages:
← Florida slab leak repair ← Marathon leak repair hubWhat makes Marathon slab leak distinct
Middle Keys; Seven Mile Bridge; Turtle Hospital. 360° marine salt-air exposure; hurricane-rebuild code; tidal flood zones; well water + cistern history. The dominant 1900s–40s conch + 1950s+ stilt house + post-hurricane andrew (1992) rebuild construction era determines the failure modes we see most often, and marine-grade silicon bronze + pex-a + 316 stainless as the supply baseline tells us what we'll find behind walls. We respond across Monroe County with same-day diagnostic visits.
Four repair pathways calibrated for Marathon
PEX-A reroute over slab cut wherever possible to preserve original terrazzo, tile, and historic finishes. We default to the least-invasive option that solves the problem long-term.
PEX-A reroute through walls + ceilings
Bypass failed under-slab run with new PEX-A supply through wall cavities, attic chases, or ceiling joists — preserves finishes.
Default — preserves finishesControlled slab cut + spot repair
Where reroute geometry doesn't work, controlled access cut through slab, repair, pressure-test, patch.
When reroute impossibleFull PEX-A repipe
When multiple leaks indicate end-of-life supply, full repipe through wall + attic cavities; abandoned under-slab line stays isolated.
End-of-life systemsProPress no-flame copper
For mid-rise + supertall occupied buildings, ProPress crimp fittings replace traditional sweat-soldering — zero open flame.
Mid-rise mandatoryTransparent slab leak pricing for Marathon
Pricing varies by scope. We provide written fixed-price quotes after initial diagnosis — no upsell surprises.
Detection Only
Marathon detection only scope.
$325–$475Spot Repair
Marathon spot repair scope.
$1,400–$3,400Reroute Default
Marathon reroute default scope.
$1,800–$4,500Full Repipe
Marathon full repipe scope.
$7,800–$14,500Architect Historic
Marathon architect historic scope.
$12,000–$19,500What Marathon residents ask before booking
How fast can you get to me in Marathon?
What's specific about slab leak in Marathon?
Do you speak Spanish?
Will my homeowner's insurance cover the repair?
What's typical slab leak cost in Marathon?
What materials do you install in Marathon homes?
Phone diagnosis free. Marathon slab leak specialists.
Florida Keys regional coverage. post-tension deck · tendon avoidance · ground-penetrating radar. 5-year written workmanship warranty.