Unilock Roofing Nationwide

Unilock Roofing: The Sherman Oaks Owner’s Guide

Unilock roofing components in Sherman Oaks typically run $400-$1,800 for professional repair and $8,000-$20,000 for full replacement, depending on whether we’re addressing isolated flashing failure or a system-wide membrane issue. We stock Unilock-compatible membrane sections, ridge vents, and perimeter flashing in our Valley warehouse, and most Sherman Oaks calls we receive are diagnosed and quoted same-day. Homeowners usually discover the problem after a Santa Ana wind event or the first heavy winter rain, when water appears at ceiling corners or ridge-line staining shows up in the attic during a routine storage trip.

Call (213) 221-0788

Which Unilock Models This Applies To

Unilock’s roofing line breaks into three series that matter for parts matching: the original ProGuard membrane systems (discontinued circa 2018 but still common on Sherman Oaks homes built 2012-2017), the current ShieldLock TPO series with its gray-backing identification strip, and the limited-run Slate-Look composite tile system installed mainly in the hills south of Ventura Boulevard. The ProGuard used a 60-mil membrane with proprietary seam plates; ShieldLock moved to an 80-mil specification with heat-welded seams and a different fastening pattern.

To identify your series, check the underside of any accessible membrane edge in the attic - ProGuard shows a white fabric mesh, ShieldLock shows the gray strip. The Slate-Look tiles carry a molded date code on the underside near the nail flange. OEM Unilock parts are available through regional distributors in Pacoima, though lead times run 10-14 days for ProGuard legacy items. We stock aftermarket membrane sections from Versico and GAF that meet or exceed the original mil spec, and we’ve verified heat-weld compatibility with ShieldLock in the field. For ProGuard repairs, we typically recommend the aftermarket route - the OEM plates are increasingly unavailable, and the Versico alternative has held up through five Sherman Oaks summers on our tracked jobs without delamination.

Signs Your Unilock Roofing Is Failing

• Water stains at ceiling corners or along the ridge line. This usually indicates membrane seam failure at the ridge vent or a compromised transition flashing where the Unilock system meets a vertical wall. The Santa Ana winds in Sherman Oaks lift membrane edges incrementally; by year eight or nine, the stress concentrates at these joints.
• Bubbling or tenting visible on flat roof sections. Moisture has penetrated beneath the membrane and vapor is lifting the field. On ProGuard systems, this often traces to plate fastener back-out - the original screws weren’t rated for the thermal cycling our Valley sun delivers.
• Granule loss or surface cracking on composite tile surfaces. The Slate-Look tiles oxidize faster than the manufacturer projected in high-UV exposure. We’ve measured 40-50% surface degradation at year 12 on south-facing Sherman Oaks slopes, well before the advertised 25-year mark.
• Sudden spikes in attic temperature or cooling costs. When the reflective surface degrades or the membrane pulls away from the ridge vent, the attic becomes a heat sink. One homeowner near the Galleria saw her July bill jump $180 before we found a 12-foot seam separation the previous installer had missed.
• Standing water 48 hours after rain on nominally flat sections. Unilock’s tapered insulation scheme relies on precise installation; if the original crew shorted the slope or crushed the board at walkway areas, water ponds and accelerates membrane fatigue. We see this most on additions over garages in the flat-roofed ranch homes off Dickens Street.

Before

After

Replacement Cost & What’s Included

The spread on full replacement comes down to three factors: square footage, substrate condition (plywood replacement adds $2.50-$4.00 per square foot in Sherman Oaks material and labor), and whether we need to crane materials over a two-story hillside home. Every quote we deliver is flat and written - Clause 1 of the Haven Standard - with line-item breakdowns for membrane, fasteners, flashings, and labor hours. No work proceeds until you sign the scope. We’ve kept projects within 3% of the original written number across 4,000-plus jobs since 2007, and that discipline applies to a $600 patch the same as a $16,000 replacement.

DIY or Call Us?

There’s a safe middle ground here, and then there’s a hard stop. What you can do: walk the attic with a flashlight after the next rain, note stain locations, and photograph any membrane edges you can reach without stepping off the joists. Check the date on your original installation paperwork if you have it - Unilock’s warranty registration, if filed, helps us confirm series and coverage.

What you shouldn’t attempt: membrane heat welding requires a 500-degree automatic welder and a practiced hand; the seam fails if the speed or temperature is off by 10%. Walking a pitched composite tile roof without proper tie-off risks both personal injury and tile cracking that turns a $600 repair into a $3,000 problem. And any work that involves disturbing the membrane at a wall transition or penetration voids the existing warranty if not documented with manufacturer-approved materials. We’re not affiliated with Unilock - we’re an independent service provider - and we say this plainly because we’ve been called to fix three Sherman Oaks DIY attempts in the past eighteen months, each costing more than the original professional repair would have. If you’re unsure what you’re seeing, call (213) 221-0788. We’ll diagnose it, photograph it, and put the number in writing before anyone touches a tool.

FAQs