A smoother, safer pool area starts with a level deck (and the right repair method)
A pool deck doesn’t have to be cracked in half to be a problem. In the Denver metro, it’s common to see sections of concrete settle just enough to create toe-stub edges, low spots that hold water, and uneven transitions around coping, steps, and gates. The good news: many sunken slabs can be lifted and stabilized without tearing out the entire deck.
At AAA Concrete Raising, we’ve been helping homeowners across Denver since 1988 with minimally invasive concrete lifting (mudjacking and slab support) designed to restore function and reduce trip hazards—while preserving the look of your existing hardscape.
Why pool decks settle in Denver (and why it’s not “just cosmetic”)
Pool deck concrete usually drops for one reason: the slab loses support underneath. That loss of support can come from several Denver-specific factors:
• Soil movement & expansive clays: Colorado’s clay-rich soils can expand when wet and shrink when dry, stressing slabs and contributing to uneven movement (including both settling and heaving).
• Water-related washout: Splash-out, irrigation overspray, downspouts, and poor drainage can move fine soils and create hidden voids beneath the deck.
• Freeze–thaw cycles: Moisture in and around concrete can repeatedly freeze and thaw, worsening cracks and accelerating movement over time.
• Poor compaction or backfill: Some decks settle because the soil was never properly compacted before the slab was poured—especially near utility trenches or recent remodels.
Even a small elevation change can increase slip/trip risk, and uneven poolside walkways are a known contributor to injuries around pools. The U.S. Consumer Product Safety Commission has long highlighted falls on slippery walkways/decks as a major pool accident pattern, reinforcing why deck condition matters—not just the water.
How to tell if your pool deck needs leveling (not just patching)
Hairline cracks can be normal, but these signs often indicate a support issue under the slab:
Uneven edges or lips
A raised edge or drop between slabs (especially at control joints) that catches toes or furniture legs.
A raised edge or drop between slabs (especially at control joints) that catches toes or furniture legs.
Standing water after use
Low spots that collect water after splashing, rain, or cleaning—often a clue that the slab has shifted and drainage has changed.
Low spots that collect water after splashing, rain, or cleaning—often a clue that the slab has shifted and drainage has changed.
Cracks that “stair-step” across sections
When cracks align with differential movement between two panels, it is not just surface shrinkage.
When cracks align with differential movement between two panels, it is not just surface shrinkage.
Gaps near coping, steps, or fixtures
Separation along the pool perimeter or around anchors/handrails can signal shifting support.
Separation along the pool perimeter or around anchors/handrails can signal shifting support.
If you suspect voids are part of the problem, see our void fill service page for how under-slab stabilization can help prevent continued settling.
Did you know? Quick pool-deck facts that matter
A deck can move both directions. In Colorado, slabs can settle from washout/compaction, or heave from moisture expansion and freeze-related pressure under the slab.
Low spots can create a “maintenance trap.” Standing water increases saturation in the soils at the edges, which can accelerate future movement during freeze–thaw periods.
Not every crack needs replacement. If the slab is intact (not shattered) and the issue is loss of support, lifting and stabilizing can restore function while keeping the same deck finish.
Mudjacking vs. other lifting methods: a practical comparison for pool decks
Homeowners often hear multiple terms—mudjacking, slabjacking, and foam lifting. Here’s a plain-language comparison to help you ask better questions when you request an estimate.
| Factor | Mudjacking (cement-based slurry) | Polyurethane foam lifting (context) |
|---|---|---|
| Material behavior | Dense slurry fills voids and supports the slab once cured. | Expands to lift; typically lightweight and water-resistant. |
| Injection hole size | Often larger ports; patches can be more visible depending on finish. | Often smaller ports; can be less noticeable after patching. |
| Moisture considerations | Best results come from addressing drainage/voids so water doesn’t keep undermining support. | Foam is commonly described as hydrophobic and resistant to washout. |
| Typical goals | Lift + stabilize + fill voids beneath the slab. | Lift + stabilize with fast cure time in many applications. |
| Best next step | Ask what caused the settlement, and how the voids/drainage will be addressed. | Ask about water exposure, lift precision near coping, and warranty specifics. |
Note: The “best” method depends on the slab condition, access, drainage, and how close the work is to sensitive areas like coping and pool plumbing. A good contractor should explain why the slab moved and how they’ll reduce the chance it moves again.
Step-by-step: what pool deck leveling looks like (and how to prepare)
1) Identify the “why,” not just the low spot
Look for drainage contributors first: downspouts dumping near the deck, irrigation overspray, or a grade that funnels storm water toward the pool. If water keeps getting under the slab, any lift method is fighting the same problem again.
2) Mark hazards and functional issues
On a dry day, use sidewalk chalk to circle: trip lips, pooling zones, and sections where patio furniture rocks. This helps prioritize which panels matter most for safety and usability.
3) Plan for access and protection
Clear small items (planters, chairs, décor) and point out sprinkler heads, drains, and any known plumbing routes. Around pools, protecting coping transitions and maintaining proper drainage pitch are key.
4) Lift and stabilize the slab
With mudjacking, small access holes are drilled and a cement-based slurry is pumped beneath the slab to fill voids and raise the concrete. Once the slab reaches the target elevation, ports are patched.
5) Confirm drainage and finish details
The goal isn’t “perfectly flat everywhere.” The goal is safe transitions and predictable drainage away from structures, gates, and problem corners where water previously collected.
If your project also involves a settled patio section connected to the pool area, our patio leveling page explains how lifting can restore outdoor living spaces without a full tear-out.
When leveling is a great fit (and when replacement may be smarter)
Leveling is often a strong option when:
• The slab is mostly intact (not broken into multiple loose pieces)
• The problem is settlement/voids, not widespread crumbling concrete
• You want to preserve existing finishes and avoid a major demo project
• The deck can be raised without conflicting with doors, gates, or drainage
• The problem is settlement/voids, not widespread crumbling concrete
• You want to preserve existing finishes and avoid a major demo project
• The deck can be raised without conflicting with doors, gates, or drainage
Replacement may be more appropriate when:
• Concrete is severely spalled, delaminated, or structurally failing
• There’s major heaving that requires removing pressure sources below
• Prior repairs failed because water/drainage issues were never corrected
• You’re redesigning the space and want different slopes, drains, or a layout
• There’s major heaving that requires removing pressure sources below
• Prior repairs failed because water/drainage issues were never corrected
• You’re redesigning the space and want different slopes, drains, or a layout
If you’re unsure which category you’re in, a site evaluation is the fastest way to get clarity—especially around pools where grade and water management matter.
Denver local angle: what homeowners should watch for each season
Denver’s temperature swings can be tough on hardscape. A simple seasonal check helps catch movement early:
Spring: Walk the deck after snowmelt. If water is pooling where it never used to, your slope may have changed.
Mid-summer: Check irrigation overspray and soil washout at slab edges. Consistent moisture can undermine support.
Fall: Make sure downspouts and extensions discharge away from the pool deck and foundation.
Winter: If you see new cracking after freeze–thaw, don’t ignore it—a small separation can become a bigger lip by next swim season.
If other slabs around your property are showing similar settling (front walk, driveway edges, garage approach), it may indicate a broader soil/drainage pattern. You can explore related services like driveway leveling or sidewalk and walkway leveling.
Get an evaluation for pool deck leveling in Denver
If your pool deck has become uneven, don’t wait for the problem to spread to connected slabs or create a bigger hazard around wet footing. A professional assessment can confirm whether the issue is settlement, voids, drainage, or heaving—and which repair strategy fits your layout.
Request Pool Deck Leveling Help
Prefer to review our concrete lifting services first? Visit Concrete Leveling & Mudjacking for an overview of what we do across the Denver metro.
FAQ: Pool deck leveling and concrete lifting
How long does pool deck leveling last?
Longevity depends on what caused the settlement and whether that cause is addressed (especially drainage and soil washout). A well-supported slab with corrected water management is far more likely to stay stable.
Longevity depends on what caused the settlement and whether that cause is addressed (especially drainage and soil washout). A well-supported slab with corrected water management is far more likely to stay stable.
Will leveling fix cracks in my pool deck?
Lifting can close or reduce some separation where panels dropped unevenly, but existing cracks typically remain visible. Many homeowners combine leveling with crack sealing and surface care for the best finished look.
Lifting can close or reduce some separation where panels dropped unevenly, but existing cracks typically remain visible. Many homeowners combine leveling with crack sealing and surface care for the best finished look.
Is mudjacking messy around a pool?
It’s a controlled process, but it does involve drilling access holes and patching. A careful crew will protect surrounding areas, keep the work zone tidy, and confirm final grade and transitions near coping and gates.
It’s a controlled process, but it does involve drilling access holes and patching. A careful crew will protect surrounding areas, keep the work zone tidy, and confirm final grade and transitions near coping and gates.
What’s the difference between settling and heaving?
Settling is when the slab drops because support is lost beneath it. Heaving is when the slab is pushed upward due to expanding soils, freezing pressure, or intrusion from below. The right fix depends on which one you’re dealing with.
Settling is when the slab drops because support is lost beneath it. Heaving is when the slab is pushed upward due to expanding soils, freezing pressure, or intrusion from below. The right fix depends on which one you’re dealing with.
Can you level pool decks and nearby slabs (patios, walkways) in the same visit?
Often, yes—especially when multiple slabs share the same drainage pattern. If you have a settled walkway to the pool area, combining projects can help make transitions safer and more consistent.
Often, yes—especially when multiple slabs share the same drainage pattern. If you have a settled walkway to the pool area, combining projects can help make transitions safer and more consistent.
When should I schedule pool deck repair in Denver?
Many homeowners plan the work before peak swim season so the area is safer and drains properly. If you already have trip lips or pooling, sooner is better—freeze–thaw and water intrusion can worsen unsupported areas over time.
Many homeowners plan the work before peak swim season so the area is safer and drains properly. If you already have trip lips or pooling, sooner is better—freeze–thaw and water intrusion can worsen unsupported areas over time.
Glossary: helpful terms for pool deck leveling
Mudjacking (slabjacking): A concrete lifting method where a cement-based slurry is pumped under a sunken slab to fill voids and raise it.
Void: An empty space under concrete created by soil erosion, washout, or poor compaction—often the direct cause of settlement.
Expansive soil: Soil (often clay) that swells when wet and shrinks when dry, contributing to slab movement.
Freeze–thaw cycle: Repeated freezing and thawing of moisture in concrete or surrounding soil that can worsen cracks and movement.
Trip hazard (concrete lip): A vertical edge difference between two slabs or sections that increases the chance of tripping—especially around wet pool areas.