CGI Home Additions & ADU Nationwide

CGI Home Additions & ADU: The West Palm Beach Owner’s Guide

We stock and install CGI-compatible framing hardware, impact-rated window and door assemblies, and structural connectors for home additions and ADUs in West Palm Beach, with typical installed pricing for addition work running $45,000-$130,000 and ADU construction at $90,000-$220,000. Most CGI part failures we see in West Palm Beach show up during the dry season, when thermal expansion stress reveals weakened fasteners or sealant gaps that held through the humid summer. Homeowners usually notice the problem when their addition’s impact windows start weeping condensation between panes, or when a previously tight door assembly develops a visible gap at the header after a cold front.

Call (561) 475-3903

Which CGI Models This Applies To

CGI’s impact product lines span several series, and the parts we match most often in West Palm Beach are the Estate Collection fixed and operable window hardware, the Sentinel by CGI multi-point locking assemblies, and the Targa series door hinges and sweep kits. The Estate Collection uses a 3-inch heavy-duty hinge pin with a specific brass alloy bushing that differs from the Targa’s stainless-steel equivalent; mixing these causes accelerated wear in coastal salt air. To identify your part, check the etched code in the glass corner (format: CGI-YY-MODEL-SERIES) or measure the hinge barrel diameter with a caliper, Estate runs 0.75 inch, Targa runs 0.625 inch.

We source OEM CGI parts through their Florida distribution network, but we also stock quality aftermarket equivalents from Truth Hardware and Amesbury for common wear items like sweep seals and roller cams. The aftermarket route saves roughly 15-20 percent on material cost and carries the same 10-year coastal warranty when we install it. For structural connectors and impact-rated fasteners, we stay OEM; the Miami-Dade and Palm Beach County product approval numbers are stamped on the part, and inspectors in West Palm Beach check these codes.

Signs Your CGI Home Additions & ADU Is Failing

• Condensation between impact glass panes. The warm-edge spacer or primary seal has failed, which in West Palm Beach’s UV exposure typically happens at 12-15 years, not the 20-year rating you see on the label. The desiccant inside becomes saturated and loses its drying capacity.
• Multi-point lock handle spins without engaging the shoot bolts. The internal gearbox has stripped, usually from operating the handle while the door is under wind pressure. CGI’s gearboxes use a zinc alloy housing that fatigues faster in Florida’s thermal cycling.
• Door drags at the threshold after a cold night. The composite sweep has compressed past its recovery point, or the hinge screws have backed out from seasonal wood movement in the jamb. We see this most in additions framed with engineered lumber, which moves differently than solid sawn.
• Visible daylight at the header or jamb corners. The structural sealant bead has separated from the frame, or the installation clips have corroded. West Palm Beach’s salt air attacks uncoated steel clips within 5-7 years.
• Window won’t stay open or slams shut. The balance system, either coil or block-and-tackle depending on CGI series year, has lost tension. Pre-2015 Estate units used a 3/8-inch coil that CGI discontinued; retrofit adapters are available but require precise sizing.

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Replacement Cost & What’s Included

What drives the range: part availability (OEM vs. aftermarket), whether the frame needs removal for access, and whether we find secondary damage like rotted jamb substrate or corroded fasteners. Our quote is flat and written before work starts, per Clause 1 of the Haven Standard. The 365-Day Done Right Promise covers the installation and the part; if the new sweep pulls away or the lock binds, we return and make it right. Every visit includes a documented photo record, standard, not optional.

DIY or Call Us?

What you can safely check: verify the etched code in the glass corner, operate the lock slowly to feel where it binds, and look for corrosion on visible fasteners with a flashlight. What goes wrong fast: removing an impact-rated window unit without proper support risks frame racking, which voids the Miami-Dade approval and creates an air infiltration path you cannot see until the next storm. The multi-point lock gearbox contains spring-loaded components under tension; we’ve had owners call us after the internal pins scattered across their patio. For structural connectors in an addition or ADU, Florida building code requires a licensed contractor to sign off on any fastener replacement in a load path. We’re independent, not affiliated with CGI, and we’ve handled their hardware since we started working in West Palm Beach. Call (561) 475-3903 and we’ll schedule a free estimate with a written price before anyone picks up a tool.

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