Mr-Glass Roofing Nationwide

Mr-Glass Roofing: The Pomona Owner’s Guide

Mr-Glass roofing systems installed in Pomona typically run $8,000-$20,000 for a full replacement, with most repair calls landing between $400-$1,800 depending on whether we’re addressing a membrane breach, fastener failure, or panel separation. We stock Mr-Glass-compatible flashing kits, membrane sections, and fastening hardware for same-day repair on most model lines. Most Pomona owners discover a problem after the first hard Santa Ana wind season, when lifted panels or separated seams start showing daylight from inside the attic.

Call (626) 606-1081

Which Mr-Glass Models This Applies To

Mr-Glass has produced three primary roofing series since the early 2000s: the Classic T-Bar system (discontinued circa 2015), the Pro-Seal standing seam line, and the current WeatherGuard interlocking panel series. The Classic T-Bar used a proprietary 2-inch rib spacing with butyl tape seals that harden after eight to ten years in Pomona’s UV exposure; Pro-Seal moved to a 1.5-inch clip-fastened seam with EPDM gaskets; WeatherGuard uses a snap-lock profile with factory-applied sealant strips.

To identify your series, check the panel edge profile from a ladder or the model stamp on the original installation invoice. Classic T-Bar panels have a visible mechanical lock you can hook with a flathead screwdriver; Pro-Seal and WeatherGuard both sit flush until you lift the seam lip. The critical compatibility gotcha: WeatherGuard clips are not backward-compatible with Pro-Seal rails, though some Pomona installers mixed them during the 2016-2018 transition years. We carry OEM Mr-Glass clips and rails, plus a vetted aftermarket equivalent from Metal-Era that matches the 0.032-inch aluminum gauge and Kynar 500 finish spec. For the Classic T-Bar, OEM is no longer manufactured; our aftermarket kit uses a comparable 50-mil butyl tape with a 20-year Pomona-calibrated UV rating.

Signs Your Mr-Glass Roofing Is Failing

• Daylight visible through panel seams. The butyl tape or EPDM gasket has reached end of life, which in Pomona’s 280-plus annual days of sun typically happens at year 9-12 for original seals. Water follows within one to two rain cycles after light penetration starts.
• Popping or ticking sounds during morning warm-up. Thermal expansion is binding against corroded clips or over-tightened fasteners. On south-facing slopes in Pomona, daily temperature swings of 40°F or more stress the system until something gives.
• Rust streaks below fastener heads. Mr-Glass used zinc-plated steel fasteners on pre-2012 installs; the plating fails where the washer compresses, and Pomona’s occasional heavy dew accelerates the bleed. The fastener is no longer sealing, and the substrate is taking water.
• Panel oil-canning or waviness between seams. Either the clip spacing has loosened beyond the 24-inch on-center spec, or the original installer skimped on substrate leveling clips. This is cosmetic until a wind event turns it into a tear-off.
• Interior water stains following a straight line. Mr-Glass panels run in predictable courses; a stain that tracks a seam indicates a longitudinal seal failure rather than a random penetration. This pattern helps us locate the breach without a full tear-off inspection.

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Replacement Cost & What’s Included

The range driver is access and substrate condition. A single-story ranch near the Pomona Fairplex with solid OSB sheathing sits at the lower end; a two-story with degraded skip sheathing in Lincoln Park requires more labor and material. Under Clause 1 of the Haven Standard, we deliver a written line-item price before any work starts. The quote includes the panel cost at our vetted-supplier rate, not a padded retail markup. Workmanship on repairs carries a 2-year warranty; full replacements include the 365-Day Done Right Promise plus the manufacturer’s finish warranty.

DIY or Call Us?

Here’s where we draw the line honestly. A homeowner can safely walk the roof with binoculars to confirm which seam is lifting, check the attic for stain patterns, and photograph the fastener head condition for our review. What you should not attempt: removing a Mr-Glass panel yourself. These are tension-fastened systems; the clip releases with a specific upward-then-sideward motion, and improper prying bends the seam profile beyond repair. Worse, a slipped tool on a standing seam edge cuts deep and fast. We’ve replaced too many owner-damaged panels that would have been a $600 seal job.

Measure twice, then we can talk. Call (626) 606-1081 and text us your photos; we’ll identify the series and tell you whether it’s a stocked part before we schedule.

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