Mr-Glass Home Additions & ADU Nationwide

Mr-Glass Home Additions & ADU: The Pomona Owner’s Guide

We stock and install Mr-Glass-compatible systems for home additions and ADU projects in Pomona, with typical installed pricing from $45,000 to $130,000 for additions and $90,000 to $220,000 for detached ADUs. Most Pomona homeowners discover their Mr-Glass system needs attention when they notice temperature swings in the new space, visible gaps at panel seams, or hardware that no longer seats properly after seasonal expansion cycles. The Inland Empire’s 100-degree summer swings and occasional Santa Ana wind events stress these systems differently than coastal installs, which is why we keep Mr-Glass-compatible framing connectors, tempered panel gaskets, and adjustable header hardware on our trucks.

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Which Mr-Glass Models This Applies To

Mr-Glass systems for residential additions fall into three series lines: the Classic framed system (discontinued 2018 but still common in Pomona’s 2010-2017 builds), the Slimline semi-frameless series, and the current ProView minimal-frame line. The part you need depends on which generation is on your home. Classic systems used a 2-inch aluminum frame with a specific tongue-and-groove gasket profile that Slimline changed to 1.5 inches with a snap-in bulb seal. ProView went to a pressure-fit dry glaze, which means the replacement logic is completely different.

To identify your series, check the etched logo in the glass corner (all Mr-Glass tempered panels carry this) or measure the visible frame depth at the edge. Classic frames measure 2 inches from wall face to glass face; Slimline measures 1.5 inches; ProView measures under 1 inch. We source OEM gaskets and hardware through Mr-Glass’s regional distributor in Ontario, but for Classic-series jobs where OEM gaskets are back-ordered, we use a compatible EPDM profile from our secondary supplier that we’ve pressure-tested to 25 PSF, which exceeds Pomona’s wind-load requirements per the 2022 California Building Code. Rowan Construction Group Pomona is an independent service provider, not affiliated with Mr-Glass.

The gotcha most owners miss: Classic and Slimline header rollers are not interchangeable despite looking similar. The Classic roller axle is 5/16-inch diameter; Slimline reduced to 1/4 inch. Force a Classic roller into a Slimline track and you’ll oval the housing within a month of use.

Signs Your Mr-Glass Home Additions & ADU Is Failing

• Visible gasket shrinkage or hardening at panel edges. EPDM rubber degrades in Pomona’s UV exposure, typically showing surface cracking after 8-12 years. Once the seal compresses below 30 percent of original thickness, you’re losing conditioned air and inviting moisture at the sill.
• Panels that stick, jump, or require shoulder force to move. This usually traces to debris in the track combined with roller bearing wear. In Pomona, the Fairplex area’s older lots with mature jacaranda trees see more organic debris infiltration than newer infill builds.
• Condensation between panes on dual-glazed units. Mr-Glass used several IG (insulated glass) suppliers over the years; failed edge seals are not repairable and indicate the glass unit itself needs replacement, not just hardware.
• Frame corners pulling away from substrate or visible caulk failure. Thermal cycling in the Inland Empire moves aluminum more than homeowners expect. If the structural silicone has sheared, the frame is no longer transferring wind load to the rough opening correctly.
• Locking hardware that no longer engages or requires lifting the panel to align. This often means the roller height has drifted or the sill track has deformed. Continued operation in this state wears the lock cam and eventually damages the keeper in the jamb.

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Replacement Cost & What’s Included

For Mr-Glass system work on home additions and ADUs in Pomona, our installed pricing breaks down as follows:

The wide range on additions and ADUs reflects foundation type (slab-on-grade vs. raised), utility extension distance, and whether we’re tying into existing HVAC or specifying a mini-split. For glass-specific repairs, the variable is typically glass thickness and tempering specification. Under Clause 1 of The Haven Standard, we deliver a written price before any work starts, every time. The quote is flat, with line-item parts and labor shown separately so you see where the money goes. Our 365-Day Done Right Promise covers the installation; glass units carry the manufacturer’s warranty against seal failure. No change proceeds without a signed change order, which is how we’ve kept projects within a few percent of the agreed number across 4,000-plus jobs since 2007.

DIY or Call Us?

There’s a safe middle ground here. A homeowner can inspect their own gaskets for cracking, clean debris from the sill track with a vacuum and stiff brush, and verify that rollers are seated in the track (look for the axle pin through the frame hole). What you should not attempt: removing a tempered glass panel solo. Mr-Glass panels are 1/4-inch minimum thickness, often 3/8 inch on larger openings, and a 6-foot by 8-foot unit weighs over 200 pounds. The edge compression required to seat gaskets properly demands spreader tools and experience; improvised methods crack glass unpredictably. If your diagnosis points to IG seal failure or frame detachment from substrate, that’s structural and we need to look at it. Call (626) 606-1081 and we’ll schedule a free estimate with a written quote before any work starts. Measure twice, then we can talk.

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