Fixing a Cracked Pool Deck in Mandeville: Repair and Resurfacing Materials

Written by Big Easy Paver Patios

How Do You Repair Cracks in a Pool Deck?

Quick Answer: Small, stable cracks in a concrete pool deck are repaired by cleaning them out, filling them with a flexible crack filler made for concrete, and sealing or coating over the top. Cracks that are wide or growing mean the ground under the deck is moving, and in Mandeville that usually calls for leveling or rebuilding the base before any surface fix will last.

The first job is figuring out which kind of crack you have. We look at width, whether the two sides sit at the same height, and whether the crack has grown since last season. A thin crack with level edges is cosmetic. A crack with one side higher than the other is a symptom.

What Causes Pool Deck Cracks in Mandeville?

Mandeville sits along the north shore of Lake Pontchartrain, and many lots near the lake have soft, wet ground and a high water table. A pool deck adds splash water and roof runoff on top of that. The cracks we see most often come from a few sources:

• Settling base. Fill around a pool shell is hard to compact perfectly, and it can keep settling for years.
• Water under the slab. Splash-out, downspouts, and a failed joint at the coping let water reach the soil below and soften it.
• Shrinkage. All concrete shrinks as it cures. Missing or shallow control joints let it crack in random places.
• Heat cycles. Strong sun heats the slab each day, and the slab moves a little against the coping and walls.

Our post on why pavers sink and settle explains how soft local soil behaves under any hard surface.

How Do You Fix Small Cracks Yourself?

For hairline cracks with level edges, a careful DIY repair can hold up:

1. Clean the crack with a wire brush and blow out dust and debris.
2. Let the deck dry fully, which can take a while in Mandeville humidity.
3. Fill with a flexible concrete crack filler or sealant, following the label.
4. Smooth it flush and keep foot traffic off until it cures.

Check the joint between the coping and the deck while you’re at it. If the sealant there has failed, water gets under the slab every time someone climbs out of the pool. Keep in mind that a filled crack will still show, and it won’t match the surrounding finish.

What Is the Best Pool Deck Resurfacing Material?

There’s no single best one. The right choice depends on the condition of the slab and how hot and slick the surface can get. Here’s how the common options compare:

• Cementitious overlays. A thin layer of polymer-modified cement, often with a textured or knockdown finish. They refresh the look and add grip, but they follow any crack in the slab below.
• Coatings and paints. The quickest refresh. They wear faster in direct sun and around chlorinated water and need recoating.
• Paver or stone overlays. Thin pavers or stone set over a sound slab. They hide old cracks and give a new surface, but they raise the deck height, which has to work at the coping and doors.
• Full replacement with pavers. Remove the old slab and build a new paver deck on a proper base. It’s the bigger job, and it’s the one that fixes a moving base instead of covering it.

Surface temperature matters in our summers. Lighter colors usually stay cooler underfoot than dark ones. Our paver pool deck guide covers comfort and slip resistance, and our post on the best pavers for the Louisiana climate compares materials.

How Do You Level a Sunken Pool Deck?

It depends on what the deck is made of:

• Concrete decks. Slab lifting injects material under the slab to raise it back toward level. It can help when the slab is in one piece, but it doesn’t fix what made the ground settle.
• Paver decks. We lift the sunken pavers, rebuild and compact the base, and relay the same units. The repair blends in because the pavers are reused.

Either way, find the water source first. If splash-out or a downspout keeps soaking the same corner, it’ll sink again. See drainage and grading in Mandeville and paver repair and releveling in Mandeville.

When Is a Pool Deck Worth Replacing?

We’d lean toward replacement when cracks run across most of the deck, when sections have dropped and tilt toward the pool, or when earlier patches and coatings keep failing. If the pool itself shows leaks or shell cracks, have a pool company look at it first, since a leak under the deck will undo any surface work. Our post on resurfacing or replacing cracked concrete walks through the same decision for patios and driveways.

Frequently Asked Questions

Can you put pavers over a cracked pool deck?

Only if the slab underneath is stable. Pavers over a slab that’s still moving will crack or shift along the same lines.

How do I keep a repaired deck from cracking again?

Deal with the water first. Point downspouts away from the deck, keep the coping joint sealed, and make sure the deck slopes away from the pool and the house. Most repeat cracks we see in Mandeville come back because the soil under the slab stayed wet.

Should I seal a pool deck?

Sealing can help with stains and water absorption. Use a product labeled for pool decks, since some sealers get slick when wet.

Do I need a permit to resurface a pool deck in Mandeville?

Resurfacing alone usually raises fewer questions than a full replacement or added area. Check with the City of Mandeville before major work, since the city runs its own permit process.

Fix a Pool Deck in Mandeville

We’ll check the cracks and the drainage around the coping, then give you a free written estimate for the fix that fits.

See our pool decks in Mandeville, start with the Mandeville service area page, or call (504) 688-4244.