Mr-Glass Home Additions & ADU Nationwide

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

Mr-Glass glass wall systems for home additions and ADUs in Santa Clarita typically run $45,000-$130,000 installed, depending on whether you’re integrating into an existing structure or building a detached unit. We stock Mr-Glass-compatible hardware, seals, and replacement panels for most series, and we can usually assess your system within 48 hours. Most Santa Clarita homeowners discover a problem when they notice drafts, condensation between panes, or hardware that won’t engage after a season of temperature swings in the Santa Clarita Valley.

Call (747) 294-3985

Which Mr-Glass Models This Applies To

Mr-Glass produces several series that appear in Santa Clarita home additions and ADU projects, and the parts are not interchangeable across lines. The SL60 folding system, common in pool-house additions around Valencia, uses a 2-1/4 inch frame depth with proprietary bottom-hung hardware. The SL45, often specified for smaller ADU openings in Saugus, runs a slimmer 1-3/4 inch profile with a different roller carriage. The fixed-frame SLP series, popular for clerestory bands in hillside additions near Canyon Country, shares glass specs with the operable lines but uses entirely different gaskets.

To identify your series, check the etched code in the glass corner (usually the interior lower right) or measure the frame depth with the sash open. The roller housing color helps too: black for SL60, gray for SL45, and no housing on fixed SLP. We source OEM Mr-Glass hardware through the manufacturer’s West Coast distribution, but for seals and gaskets we often specify a comparable aftermarket profile from Pemko or Schlegel when the OEM lead time runs past two weeks. The aftermarket saves roughly 20 percent and carries the same warranty term, though we always note the substitution on the written quote so you know what you’re getting.

Signs Your Mr-Glass Home Additions & ADU Is Failing

• Condensation between glass layers. This means the insulated glass unit (IGU) seal has failed, allowing moist Santa Clarita Valley air into the airspace. The desiccant inside the spacer bar saturates, and the fog becomes permanent rather than weather-dependent.
• Hardware sticks or requires shoulder force to operate. The stainless steel rollers in Mr-Glass folding systems pick up track debris and lose lubrication; in Santa Clarita’s dust-heavy Santa Ana wind seasons, this accelerates. Forcing the handle stresses the aluminum frame corners.
• Visible gaps at the frame perimeter when closed. Compression seals harden and take a set after 5-7 years of UV exposure. Santa Clarita’s 280-plus annual sunny days age EPDM and silicone faster than coastal climates.
• Glass rattles in wind or when adjacent doors close. The glazing beads or internal spacers have shifted, meaning the glass is no longer held under proper compression. This risks stress cracks and air infiltration.
• Water stains on the interior sill after rare heavy rain. The weep holes in the track are clogged with debris, or the sill flashing was never properly integrated with the addition’s weather barrier. In Santa Clarita’s occasional downpour events, backed-up water finds the path of least resistance.

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Replacement Cost & What’s Included

The spread on IGU replacement reflects Low-E coating upgrades and tempered versus laminated glass. Full panel replacement costs more when the original color-anodized finish must be matched. Under Clause 1 of the Haven Standard, every price is written before work starts, and no change proceeds without a signed change order. Our 365-Day Done Right Promise covers the installation and the parts we supply.

DIY or Call Us?

There’s a clear line here. A homeowner can safely clean weep holes with a pipe cleaner and verify that weatherstripping is seated in its groove. You can also photograph the etched glass code and frame stickers so we order the right part the first time.

What you should not attempt: removing an IGU yourself. Mr-Glass panels weigh 80-150 pounds depending on size, and the folding systems use spring-loaded top guides under tension. A released guide can damage the frame or injure fingers. The glazing beads snap in with a specific sequence; done wrong, you crack the replacement glass before it’s installed. We carry suction cups, spreader bars, and the torque-limited driver for the proprietary fasteners. Call (747) 294-3985 and we’ll schedule an assessment with a written quote.

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