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Unilock Driveway & Pavers: The Pasadena Owner’s Guide
Unilock paver driveway and walkway repair in Pasadena typically runs $700 to $4,500 installed, depending on how many pavers have shifted, cracked, or sunk and whether the base needs re-compacting. We stock common Unilock paver sizes, edge restraints, and polymeric sand on the truck, and most repairs finish the same day we start.
Most homeowners find the problem with their feet before their eyes: a paver tilts underfoot, water pools where it didn’t before, or a section of the driveway has settled into a subtle dip. What starts as one loose paver is usually a signal that the sand base beneath has eroded or shifted. In Pasadena’s clay-heavy soil, the wet winters and dry summers make ground movement slow but relentless. Left alone, one bad paver becomes a spreading patch of uneven surface.
Which Unilock Models This Applies To
Unilock drives and patios are built from one of three paver families: Brussels Block (the classic tumbled rectangle with rounded edges), Hollandstone (the tight-jointed rectangular paver you see on older Pasadena driveways), and Richcliff (the oversized, squared plank look). Each has its own dimensional spec. Brussels Block runs roughly 4″ x 8″ with a 60mm or 80mm thickness depending on whether it was rated for foot or vehicle traffic. Hollandstone is the thinner of the bunch at 60mm, which is why older Hollandstone driveways in Pasadena show edge-cracking and corner-pop earlier than Brussels Block installs.
Here’s the compatibility gotcha most owners hit: Unilock changed the Brussels Block mold profile around 2015. Older pavers have a sharper shoulder; newer ones have a slightly more rounded edge and sit a millimeter or two taller. If you mix old and new Brussels Block in the same row, you’ll see it and feel it. We always check the underside of an existing paver for the mold date stamp before quoting a repair, so the match looks like it was always there.
For OEM versus aftermarket: Unilock replacement pavers from the manufacturer guarantee color and dimension match, but lead times through distributors can stretch three to six weeks in Pasadena. Quality aftermarket equivalents exist for generic shapes like Hollandstone, but we’re straight with you: color drift is real, especially in the blended tones like Sierra or Almond Grove. We prefer OEM for visible driveway sections and aftermarket only where a patio repair hides behind landscaping. Saw
Sawyer Remodel Pasadena is an independent contractor, not affiliated with Unilock. We source through authorized distributors so warranty claims stay valid.
Styles & brands we work with
Signs Your Unilock Driveway & Pavers Are Failing
- A paver rocks underfoot. The sand bedding layer has washed out beneath it, usually from a previous rain that found a path under the paver. If more than two adjacent pavers rock, the base is going.
- Low spots hold water after a dry day. Water pooling 24 hours after rain means the gravel base has settled unevenly or a drainage channel has clogged. In Pasadena’s clay soil, this gets worse every winter.
- Polymeric sand is gone between joints. Joint sand is the paver system’s backbone. When it vanishes, pavers shift laterally, edges chip, and weeds find their way through. If you see bare gaps, the interlock is failing.
- Edge pavers are pulling away from the border. A failed or missing edge restraint lets the perimeter of the driveway drift outward. You’ll see a widening gap between the last course of pavers and the concrete curb or lawn line.
- Cracked or chipped pavers in a vehicle path. A 60mm paver under car traffic needs full base support. Once a paver cracks, it’s taking the brunt of every axle, and the crack spreads to its neighbors within months.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For Pasadena, here’s the honest spread:
- Spot repair (1 – 10 pavers): $700 – $1,500
- Section repair with re-compaction (half a driveway or less): $1,500 – $3,500
- Full driveway re-level and re-sand: $3,500 – $4,500
- Full paver driveway installation: $7,000 – $18,000
- Paver patio installation: $3,500 – $11,000
Every quote includes a written line-item price before we lift a single paver. You’ll see the paver count, the sand and base material, the labor hours, and the disposal fee. No change orders, no “we found something” surprises. The 365-Day Done Right Promise covers every repair in writing: if the pavers shift or the sand washes out within a year, we return and fix it. No argument, no out-of-pocket.
DIY or Call Us?
The honest answer from Luca Romano, who has pulled apart more failed paver jobs in Pasadena than he can count: you can inspect and maintain, but full repairs are rarely a weekend job. What you can safely do is pull a loose paver, check if the sand beneath is damp or washed away, and sweep new polymeric sand into visible joints. That buys time.
What goes wrong with DIY: owners re-set pavers on old, soft base and the dip returns in a year. Or they use the wrong sand and the joints fail in the first rain. Or they crack a paver with a rubber mallet because the old base wasn’t leveled first. The work tells you everything. You just have to know how to listen to it. If you’re seeing three or more of the failing signs above, the base is talking, and it’s saying the repair is bigger than a bag of sand. Call (626) 657-5396 and we’ll give you a straight read.
FAQs
A properly installed Unilock paver driveway in Pasadena lasts 25 to 40 years, but the base beneath it has a shorter functional life here. The clay soil movement and wet-dry cycles mean most driveways need a re-level and re-sand at the 10 to 15 year mark, even if the pavers themselves are still in good shape. Call (626) 657-5396 and we’ll assess whether you need pavers, base work, or both.
Yes, in most cases we can re-set shifted pavers, re-level low spots, and re-sand the joints without buying new material. Cracked pavers are a different story: a load-bearing crack in a driveway paver means structural failure, and that paver gets replaced. The good news is a few replacement pavers blended in correctly are far cheaper than replacing a section. We’ll tell you which path applies to your driveway.
Most spot repairs and small section fixes complete in one day. A full driveway re-level and re-sand typically takes one to two days. Full paver installations run three to five days depending on the square footage and base prep. You’ll get a written schedule before we start and photo updates as the work progresses.
We keep common Unilock paver sizes, edge restraints, and polymeric sand on the truck for immediate repairs. For exact color and mold-date matches on larger jobs, we order through authorized Pasadena-area distributors, and we show you the sample before installation. Lead times are typically three to six weeks for OEM, and we’ll tell you upfront if an aftermarket equivalent is the smarter call for your budget.
If your Unilock driveway or pavers are giving you trouble, don’t wait for the dip to widen. Call (626) 657-5396 to schedule a free estimate. We’ll tell you exactly what’s wrong, exactly what it costs, and exactly when we can fix it. Written price before any work starts.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Pasadena at Sawyer Remodel Pasadena, serving Pasadena and nearby areas.
