Pool Deck Crack Repair & Sealing in St. Augustine, FL

Project Overview

Residential Concrete completed a pool deck crack repair and full reseal at a home in St. Augustine, FL. The deck had developed significant structural cracking — severe enough that the homeowner had Alpha Foundations lift and re-level the slab before our work began. Once the slab was stabilized, we came in to fill the cracks, clean the surface, and apply a fresh coat of sealer to restore both the appearance and the protection of the deck.

The Problem

Multiple large cracks had developed across the deck surface and along the coping edge, some wide enough to require backer rod before filling
The slab had shifted enough that a foundation company needed to jack and re-level it prior to any concrete repair work
The existing sealer was worn away, leaving the concrete unprotected against pool splash, rain, and the intense UV exposure common in the St. Augustine area
The cracked, faded surface posed a trip hazard near the pool edge and left the deck looking worn and neglected

Our Process: Pool Deck Services

Inspected the full pool deck following Alpha Foundations' slab lifting to identify all cracks requiring repair
Used a STIHL blower to thoroughly clear debris, dust, and loose concrete from inside every crack — removing loose material is critical because anything left behind will prevent the filler from bonding correctly and cause it to fail prematurely
Pressure washed the entire pool deck to strip away dirt, algae, and surface contaminants, ensuring a clean substrate for both the crack filler and the sealer topcoat
Installed polyurethane backer rod into the widest, deepest cracks before filling — backer rod controls fill depth and prevents the filler from bonding at the bottom of the crack, which allows it to flex with normal concrete movement rather than re-cracking under seasonal expansion and contraction
Applied flexible concrete crack filler along all repaired areas, tooling it flush with the surrounding deck surface
Washed the pool screen enclosure as part of the overall job scope
Allowed all crack repairs to fully cure before beginning the sealer application
Applied a fresh coat of Sealer across the entire pool deck, restoring the original color and providing a durable, UV-resistant protective layer

Materials Used

Sealer — water-based acrylic color sealer formulated for pool deck surfaces
Polyurethane backer rod — installed in wider cracks to control fill depth and allow the filler to flex with the concrete
Flexible concrete crack filler — paintable formula compatible with the ICT ColorSeal topcoat

Results

Cracks are filled, stable, and significantly less visible now that the deck carries a uniform color coat
The full deck surface is sealed and protected against UV, chlorine splash, moisture, and the heat cycles that break down unprotected concrete in Northeast Florida
The screen enclosure is clean, and the overall backyard presents like a well-maintained, move-in-ready outdoor space
A major structural problem — one that required a foundation company — now reads as a clean, functional pool deck thanks to professional crack repair and resealing