Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why Los Angeles Homeowners Choose Unilock Construction
Rowan Construction Group Los Angeles provides independent Unilock repair in Los Angeles for paver driveways, patios, and retaining walls across the Los Angeles basin, with written pricing before any work begins and a documented photo record on every visit. We specialize in diagnosing the root causes of Unilock hardscape failures rather than simply resurfacing symptoms, and we source genuine Unilock OEM pavers through authorized distributors to match existing color lots and dimensional tolerances. Call (213) 652-7670 to schedule your free estimate.
Unilock’s concrete paver systems, including Brussels Block, Beacon Hill, Estate Wall, and Pisa2, are engineered for durability, but they interact with Los Angeles’ specific conditions in ways that matter for long-term performance. The coastal marine layer deposits salt and moisture that accelerate efflorescence on concrete pavers. Expansive clay soils in the San Fernando Valley and hillside neighborhoods like Bel Air and Laurel Canyon shift with seasonal moisture changes, stressing base layers that were compacted to generic standards rather than local geotechnical requirements. We’ve rebuilt enough failed installations to know that the paver itself is rarely the problem; the base, drainage, and edge restraint are where projects succeed or fail.
We are not affiliated with or authorized by Unilock. We are an independent service provider with deep catalog knowledge of Unilock’s product lines and the region’s specific engineering requirements.
Why Trust Rowan Construction Group Los Angeles for Your Unilock Construction?
Grant Rowan grew up in the Palms neighborhood, close enough to the Expo Line corridor that he watched construction crews work before he ever picked up a tool himself. He trained at Los Angeles Trade-Technical College, learning to read structural drawings and understand load paths before swinging a hammer with confidence. That background shows in how our crews approach Unilock work: we measure the existing slope with a laser level, document the substrate composition, and specify the base depth and aggregate gradation in writing before ordering materials.
Our technicians are background-checked and uniformed, and every visit includes a documented photo record as standard, not an upgrade. Under Clause 1 of The Haven Standard, the price is written before anyone starts; under Clause 3, no change proceeds without a signed change order. This is the administrative discipline that has kept our projects within a few percent of the agreed cost across 4,000-plus jobs since 2007. We don’t sell enthusiasm. We sell a documented record.
When we service Unilock products, we use genuine OEM pavers, wall units, and accessories sourced through authorized distributors. For base materials and polymeric joint sand, we select high-quality aftermarket products that meet or exceed Unilock specifications. We always recommend repair over full replacement when the base and majority of units remain structurally sound. “If it’s not written down, it didn’t happen.” That’s the standard we apply to every Unilock project in Los Angeles.
Common Unilock Construction Problems We Fix in Los Angeles

- Efflorescence and calcium carbonate staining on Brussels Block - The coastal marine layer in neighborhoods like Pacific Palisades and Marina del Rey deposits salt-laden moisture that migrates through concrete pavers, leaving white mineral deposits on the surface. This is not a paver defect; it’s a chemistry problem exacerbated by irrigation runoff and poor drainage. We diagnose whether the source is subsurface moisture wicking upward or surface water pooling, then specify the correct remediation. Sometimes that means improving slope and drainage. Sometimes it means removing and reinstalling with a proper geotextile separation layer.
- Base failure and uneven settlement on expansive clay soils - The clay-rich soils in the San Fernando Valley, parts of the Westside, and hillside areas throughout Hollywood Hills and Bel Air expand when wet and shrink when dry. A base compacted to generic standards, without adequate depth or drainage aggregate, will shift with these cycles. We’ve lifted Brussels Block and Beacon Hill driveways that had settled four inches in spots because the original installer used three inches of base where six were needed for the soil conditions.
- Paver migration and joint sand loss from thermal expansion - Los Angeles’ wide daily temperature swings, especially in inland valleys, cause concrete pavers to expand and contract. Without properly installed edge restraints and stabilized joint sand, the field slowly spreads. Heavy vehicle traffic on driveways accelerates the problem. We see this most often on older installations where the original contractor used plain masonry sand rather than polymeric sand, or where edge restraints were spiked into soil rather than concrete.
- Surface scaling and spalling from UV exposure and freeze-thaw - While Los Angeles is mild, the San Fernando Valley and higher elevations occasionally see hard freezes. Older Unilock pavers with marginal air entrainment, combined with years of intense UV degradation, can develop surface flaking. This is primarily a cosmetic issue, but it indicates the paver has reached a point where replacement of affected units is more cost-effective than ongoing repair.
- Edge restraint failure on sloped driveways and walkways - The combination of vehicle loading, thermal movement, and inadequate anchoring causes plastic or aluminum edge restraints to pull away from the paver field. On hillside properties in Laurel Canyon or Topanga, this can lead to catastrophic spreading during winter storms. We install concrete-curbed edge restraints on high-load or high-slope applications, specified in writing before work begins.
Before
AfterUnilock Parts & Our Repair-vs-Replace Approach
We source genuine Unilock OEM pavers, wall units, coping, and accessories through authorized distributors. This matters for color matching; Brussels Block in Sierra, for example, has undergone subtle formulation changes over production years, and a generic “gray paver” from a home center will read as a patch. For base materials, we use crushed aggregate that meets Caltrans specifications for gradation and angularity, and we select polymeric joint sands based on joint width and expected traffic load, not brand loyalty.
Our repair-vs-replace decision is straightforward: if the base is sound, the majority of pavers are structurally intact, and the drainage pattern can be corrected without full excavation, we repair. This typically involves lifting affected areas, regrading and recompacting the base, reinstalling pavers with new edge restraints, and re-sanding with polymeric joint material. If the base has failed comprehensively, if drainage cannot be corrected without changing the finished grade, or if efflorescence has penetrated too deeply for surface treatment, we specify full replacement with a written scope and fixed price.
Call (213) 652-7670 for a free estimate. We’ll inspect, document, and give you a written price for either approach.
Our Unilock Service Process - Step by Step

- 1
Diagnosis with documentation. We arrive with a laser level, moisture meter, and camera. We measure slopes, photograph the substrate condition, and identify the Unilock product line and approximate vintage. You receive the photo record before we leave.
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Written scope and price. Under Clause 1 of The Haven Standard, we deliver a flat written price with line-item detail: excavation depth, base material type and depth, paver unit count and color, edge restraint specification, joint sand type, and sealing schedule if applicable. No work starts until you have this document.
- 3
Repair or installation. Crews work from the written scope. Base layers are compacted in lifts with a plate compactor, not a hand tamper. We check slope with every lift. If field conditions differ from what we estimated, we document the change and present a signed change order before proceeding, never after.
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Testing and verification. We flood-test drainage patterns, verify edge restraint anchoring, and confirm joint sand has been swept and compacted to full depth. The crew lead walks the finished work with you, comparing it to the written scope.
- 5
Warranty and record. The 365-Day Done Right Promise applies. You receive the final photo record, the signed completion document, and warranty terms in writing. If it’s not done right, we make it right.
Unilock Products We Service & Install in Los Angeles
We work with Unilock’s full residential hardscape catalog, with particular depth in these lines:
- Brussels Block - The flagship tumbled paver, available in multiple thicknesses and color blends. We stock common colors for repair work and source special-order blends through distributors with typical lead times of two to three weeks.
- Beacon Hill - A contemporary flagstone-style paver with a more uniform surface. Popular for modern patio installations in Silver Lake and Highland Park renovations. Requires precise base preparation due to the larger format and thinner profile.
- Estate Wall - Retaining and freestanding wall system. We install this for grade changes, planter walls, and seating walls, always with geogrid reinforcement on walls over 30 inches per Los Angeles building code requirements.
- Pisa2 - A weathered, rustic retaining wall system. Common in hillside applications throughout the Hollywood Hills and Pacific Palisades, where it must be engineered for seismic and surcharge loads.
We maintain relationships with Unilock distributors in the Los Angeles basin for color samples, technical data sheets, and warranty registration support.
We Also Service These Brands

Rowan Construction Group Los Angeles sources across fifty-plus vetted brands, giving our written quotes honest numbers rather than inflated ones. In related hardscape and exterior categories, we regularly work with Belgard and Techo-Bloc pavers, and in our interior trades we offer Kitchen Remodeling with KraftMaid and Wellborn cabinets, Cambria and Silestone countertops, and Kohler and Toto fixtures. Our multi-brand capability means we specify the right product for the condition, not the product we happen to stock.
FAQs - Unilock Construction Service in Los Angeles
The marine layer deposits salt-laden moisture that accelerates efflorescence, the white mineral bloom that appears on concrete paver surfaces. In neighborhoods within a few miles of the coast, this is a persistent maintenance reality rather than an installation defect. Proper drainage slope, geotextile separation, and occasional surface cleaning with a specialized efflorescence remover will manage it. We specify these measures in our written scopes for coastal Los Angeles installations. Call (213) 652-7670 for an exact quote on remediation.
Yes, but only when the existing concrete slab is structurally sound, properly sloped for drainage, and not subject to significant vertical movement. We bond a bedding layer of mortar or use a pedestal system for elevated installations, with expansion joints aligned to the underlying slab. We do not recommend this approach where the concrete has cracked from expansive clay soil movement, which is common in the San Fernando Valley and hillside areas. Our written estimate will specify whether overlay is viable for your specific slab condition.
Joint sand washes out when the material was not fully compacted into the joint, when the joint width exceeds the sand specification, or when drainage flows across the paver field rather than away from it. Plain masonry sand washes out readily; polymeric sand, properly activated, resists erosion significantly better. We see washout most often on installations where the original contractor used the wrong sand type or where downspouts discharge directly onto the paver surface. Correction involves re-sanding with the correct polymeric product and addressing the drainage path.
Sealing is optional, not required for structural performance. In Los Angeles’ intense UV environment, a quality breathable sealer can reduce color fading and make efflorescence easier to clean. However, improper sealer application, trapping moisture beneath a non-breathable film, can cause more problems than it solves. We recommend sealing for high-visibility installations where color retention is prioritized, and we specify breathable, penetrating sealers applied only after full curing and efflorescence testing. The cost is listed as a line item in our written quotes, never bundled invisibly.
We lift the affected area, typically using suction cups or paver extractors to preserve the units. We excavate the failed base, regrade for proper slope, install and compact new crushed aggregate to the specified depth, then reinstall the original pavers with new edge restraints and polymeric joint sand. This is cost-effective when the majority of pavers are intact and the color has not faded unevenly. Our crew recently rebuilt a 20-year-old Brussels Block driveway in Sherman Oaks this way, excavating the existing base, correcting the slope for drainage, re-compacting with crushed aggregate, and reinstalling the original pavers with new edge restraints and polymeric sand. For Culver City Unilock service, we apply the same meticulous process. The homeowner gained a level, stain-free driveway that has handled two rainy seasons without movement.
Typical Unilock hardscape projects in Los Angeles fall within these ranges:
| Service | Price Range |
|---|---|
| Paver Driveway Installation | $8,260 - $21,240 |
| Paver Patio Installation | $4,130 - $12,980 |
| Driveway Replacement | $5,900 - $16,520 |
| Concrete Driveway Installation | $5,310 - $14,160 |
| Asphalt Driveway Paving | $4,130 - $10,620 |
| Driveway Sealing | $295 - $825 |
These are flat written prices with scope detail, not estimates that change. The exact figure depends on square footage, base condition, access, and product selection. Call (213) 652-7670 to schedule your free estimate.
Book Your Unilock Service in Los Angeles, CA

Call (213) 652-7670 to schedule your free estimate. We’ll inspect your Unilock hardscape, document the condition, and deliver a written price with line-item detail before any work begins. The 365-Day Done Right Promise applies to every project, backed by The Haven Standard, not a handshake.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Los Angeles since 2007.







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