Unilock Roofing Nationwide

Unilock Roofing: The Pomona Owner’s Guide

We stock and install Unilock-compatible roofing components in Pomona, with replacement costs typically running $400-$1,800 for repairs and $8,000-$20,000 for full roof replacement depending on membrane type and square footage. Most Unilock parts we carry are available same-day through our supplier network, and we quote a flat written price before any work starts. Homeowners usually discover an issue after a Santa Ana wind event or the first hard rain of fall, when a lifted membrane edge or cracked paver-adjacent flashing starts showing water stains on the ceiling below.

Call (626) 606-1081

Which Unilock Models This Applies To

Unilock doesn’t manufacture roofing in the traditional sense. What Pomona owners are usually dealing with is a Unilock hardscape system, paver patio, or retaining wall that integrates with a roofline, balcony, or walkable deck surface. The critical interface points are where Unilock permeable pavers or porcelain tiles meet a waterproof membrane, typically on second-story terraces, ADU roof decks, or pool-adjacent cabanas in neighborhoods like Phillips Ranch and the Lincoln Park corridor.

To identify what you need, look for the stamped code on the paver underside or the membrane label at a drainage edge. Unilock’s Series 3000, Series 4000, and Beacon Hill Flagstone are common in Pomona installations from 2015 forward, and each requires a specific membrane compatibility. The OEM spec calls for a minimum 60-mil TPO or modified bitumen beneath walkable surfaces, but we’ve found that aftermarket equivalents from Firestone or Carlisle with the same mil rating and ICC-ESR report perform identically at 15-20% lower material cost. We source both and specify which we’re quoting, so the number in writing matches the product delivered.

Signs Your Unilock Roofing Is Failing

• Water staining on ceiling drywall below a paver terrace. This usually means the membrane beneath the Unilock surface has punctured or the seam tape has degraded. The pavers themselves don’t leak, the waterproofing layer does, and finding the exact breach requires lifting a section.
• White efflorescence blooming between paver joints. Calcium hydroxide migrating to the surface signals moisture is trapped in the bedding layer above the membrane, often because the drainage mat has compacted or the weep holes at the screed edge are blocked with debris.
• Pavers rocking or sounding hollow underfoot. The bedding sand has washed out, which happens when edge restraints fail or when Pomona’s occasional hard rain overwhelms a clogged drainage system. Left alone, this shifts load points and stresses the membrane below.
• Membrane visible at edges curling or cracking. UV exposure at exposed termination bars degrades TPO faster than buried sections. In Pomona’s inland heat, we’ve seen 60-mil TPO show surface checking at year 8 instead of the rated 15, especially on south-facing exposures.
• Musty odor from a formerly dry interior space. Slow membrane leaks don’t always show stains immediately. The odor means moisture is accumulating in the substrate, and by the time you smell it, the OSB or plywood below may be compromised.

Before

After

Replacement Cost & What’s Included

For Unilock-integrated roof systems in Pomona, repair work runs $400-$1,800 depending on how many pavers must be lifted and whether the membrane is patchable or needs sectional replacement. Full tear-off and replacement of the waterproofing layer beneath an existing Unilock surface starts around $8,000 and can reach $20,000 for larger terraces with complex drainage.

What drives the range: paver size and thickness (thicker Beacon Hill units take longer to lift and reset), membrane type (TPO vs. PVC vs. modified bitumen), and whether the substrate plywood needs replacement. Our quotes itemize each line, paver reset included. Under Clause 1 of The Haven Standard, that written price is the price, no change order unless you sign one. Every Unilock roofing repair carries our 365-Day Done Right Promise, and you get the documented photo record showing membrane condition before and after, edge detail close-ups, and drainage flow test results.

DIY or Call Us?

There’s a safe middle ground here. An owner can walk the surface, check for rocking pavers, and clear debris from drainage scuppers or weep holes without risk. What you shouldn’t attempt is lifting pavers to inspect the membrane beneath. The waterproofing layer is easily punctured by a misplaced pry bar, and once compromised, the repair scope expands fast. We’ve been called to Pomona homes where a well-meaning weekend inspection turned a $600 patch into a $4,000 membrane section replacement.

The other gotcha is edge detail work. Termination bars, counter-flashing, and sealant beads look simple but are installed in a specific sequence; reverse it and water runs behind instead of away. If you’re seeing any of the five symptoms above, call (626) 606-1081. We’ll quote the repair in writing, and if you have a competitor’s estimate already, we’ll review it line by line at no charge.

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