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Unilock Roofing: The Orange County Owner’s Guide
Unilock roofing products aren’t sold as a standard line item at most Orange County supply houses, which is why owners end up frustrated when a section fails. We stock and install Unilock-compatible parts, and a typical Unilock roofing repair or replacement in Orange County runs $600 – $2,500 installed, depending on the section size and underlayment condition. Most Unilock owners in Orange County discover a problem the same way: a leak shows up on the ceiling after a Santa Ana wind event, or a neighbor points out cracked pavers on the roof slope. Here’s what you need to know before you climb a ladder or start making calls.
Key Takeaways:
- Unilock roofing in Orange County typically costs $600 – $2,500 for repair or replacement, installed.
- Most failures trace back to two things: UV breakdown of sealant joints and wind-driven uplift from Santa Ana events.
- We carry Unilock-compatible parts and can usually complete a section repair in one visit.
- Call (424) 541-1701 for a written quote before any work starts. That’s how we do it.
Which Unilock Models This Applies To
Unilock’s roofing line includes two families that matter most in Orange County: the Unilock Roof Paver System and the Unilock Plaza/Slab roof deck line used on flat and low-slope residential sections. Roof pavers are installed over pedestal supports or on a drainage mat, not mortared like patio pavers. That difference is the first compatibility gotcha: a Unilock roof paver is engineered with a different edge profile and thickness tolerance than their ground paver, usually 60mm or 80mm nominal thickness, and swapping in a ground paver from a big-box store creates drainage problems within a season.
When you’re identifying your part, look at the underside edge. Unilock stamps their name and the mold number there. If the stamp is worn or the paver is older, measure the thickness and the edge-to-edge width. For roof pavers, 60mm and 80mm are the most common sizes in Orange County installs from the 1990s and 2000s. For OEM versus aftermarket: Unilock’s color blends (especially the Sierra and Courtstone lines) are hard to match exactly after five years of California sun. We always recommend OEM Unilock pavers for visible roof sections because an aftermarket color match will be obvious from the street. For hidden sections under mechanical equipment or behind parapet walls, a quality 60mm or 80mm-compatible paver performs fine and saves you money.
Penhallow Remodeling Orange County is an independent contractor. We’re not affiliated with Unilock, but we’ve installed and repaired their products throughout Orange County for years.
Styles & brands we work with
Signs Your Unilock Roofing Is Failing
- Water staining on ceilings below flat sections. This usually means the drainage mat under the pavers is clogged or the pedestal supports have shifted, letting water pool where it shouldn’t. In Orange County, this shows up after the first real rain of winter, not during the dry summer months.
- Cracked or spalled pavers along the roof edge. Edge pavers take the brunt of wind uplift. During Santa Ana events, 60-80mph gusts can lift a paver just enough to crack it against the parapet, and over several seasons that paver gives out entirely.
- Sunken or wobbling pavers in the middle of the roof. Pedestal supports degrade with UV exposure and heat cycling. Orange County roofs hit surface temperatures above 140°F in August, and that thermal expansion and contraction slowly fatigues the plastic pedestals.
- Efflorescence (white chalky residue) on paver surfaces. This is mineral migration from trapped moisture. It doesn’t mean the paver is dead, but it does mean water is sitting under the pavers longer than the drainage design intended.
- Gaps growing between pavers. Roof pavers should maintain consistent joints. When gaps open up, the drainage mat below is exposed to direct UV, and that mat fails quickly once sunlight hits it.
Replacement Cost & What’s Included
For Orange County Unilock roofing work, here’s what we typically see:
- Single paver replacement: $150 – $400 installed, including the cost of the paver, lifting the surrounding section, and resetting drainage mat material.
- Section repair (10 – 30 square feet): $600 – $1,800 installed. This covers removing damaged pavers, replacing pedestals or mat, and re-setting OEM Unilock pavers.
- Full roof paver reset on a small flat section: $1,800 – $2,500 installed. This is the “tear it out and do it properly” job, which is what we recommend when more than a third of the roof shows failure signs.
What drives the number up or down: access (a third-story roof section costs more in labor than a single-story garage roof), paver condition (if the original pavers are reusable, you save the material cost), and the drainage layer condition underneath. If the underlayment is shot, that adds to the scope and the number. We give you a written price before we touch anything, and our 365-Day Done Right Promise covers the work in writing. If something fails inside a year, we come back and fix it at no charge.
See the difference
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AfterDIY or Call Us?
Working on a roof in Orange County is not like working on a ground-level patio. The roof itself is the hazard, not just the pavers: one wrong step on a wet paver or a loose section, and you’re looking at a fall. That’s not a scare tactic, it’s just the reality of the job. We don’t recommend DIY repairs on any roof section, period.
What you can safely do is inspect from a ladder (never standing on the roof itself) and note the symptoms: cracked pavers, gaps, staining. Take photos. Then call us at (424) 541-1701. Trevor Nash has been looking at Orange County roofs for years, and the first thing we’ll do is give you the number first, then pick up the tool. A written quote means you know exactly what the repair costs before we start, and there’s no surprise at the end.
FAQs
A properly installed Unilock roof paver system typically lasts 20 – 30 years in Orange County, but the drainage components underneath (pedestals and mat) usually need replacement at the 15 – 20 year mark. UV exposure and heat cycling are the main lifespan limiters here, not the pavers themselves. Call (424) 541-1701 for an inspection and a written quote.
A cracked paver can sometimes be reset if the crack is hairline and cosmetic, but in most cases replacement is the honest answer. Repaired pavers on a roof see constant thermal stress and usually crack again within a season or two. The cost difference between repair and replacement is small enough that replacement is the smarter move. Call (424) 541-1701 for an exact recommendation.
A single paver replacement takes about two to three hours on site. A section repair (10 – 30 square feet) is usually completed in one day, and a full reset on a small flat section takes one to two days depending on access and weather. We’ll give you a defined arrival window before we show up. Call (424) 541-1701 to schedule a free estimate.
We keep common Unilock-compatible 60mm and 80mm roof pavers in our Orange County shop, plus pedestals, drainage mat, and edge restraints. If your specific color blend needs to be ordered from Unilock, we’ll tell you up front and include lead time in the written quote. Along with Unilock, we also stock parts and materials for KraftMaid, Cambria, and Silestone projects. Call (424) 541-1701 and a live person will answer.
Get Your Written Quote
If you’ve got a Unilock roof section that’s failing, don’t wait until the next rain shows you where the weak spots are. Call Penhallow Remodeling Orange County at (424) 541-1701 and we’ll schedule a free inspection, give you a written price before any work starts, and stand behind the repair with our 365-Day Done Right Promise. A real person answers the phone anytime, and our technicians are background-checked and uniformed. That’s how we’ve operated since 2004, and that’s not changing.
Written by Trevor Nash, Owner, Penhallow Remodeling Orange County at Penhallow Remodeling Orange County, serving Orange County and nearby areas.
