CGI Home Additions & ADU Nationwide

CGI Home Additions & ADU: The Boca Raton Owner’s Guide

We stock and install CGI-compatible components for home additions and ADU projects in Boca Raton, with typical installed pricing for CGI-integrated spaces running $45,000-$130,000 depending on whether you’re extending an existing structure or building a detached unit. Most CGI window and door systems specified for these projects are available with current lead times, and we carry common CGI framing and hardware assemblies on our trucks for service calls. Homeowners usually discover a CGI component issue when a recently installed addition shows air infiltration, hardware binding, or water intrusion at the sill after our first seasonal storm cycle - the moment when a specification gap meets Florida’s actual weather.

Call (754) 254-8065

Which CGI Models This Applies To

CGI’s product lines for residential additions fall into three series that matter for parts compatibility: the Estate Series (aluminum impact windows and doors, common in Boca Raton’s coastal zones), the Sentinel Series (vinyl impact-rated systems, often specified for ADUs where budget and energy performance balance), and the Targa Series (high-rise rated, occasionally used in two-story additions near the Intracoastal where wind-borne debris requirements spike). The critical identification point is the etched mark on the glass spacer or the hardware label inside the frame edge - not the sales brochure name, but the four-digit CGI manufacturing code that specifies the exact extrusion profile and glazing bead configuration.

We’ve seen owners order Estate Series hardware for a Targa frame because the visible handle looks identical; the mounting hole spacing differs by 3/16 inch, which is enough to strip the fastener boss and void the warranty. For OEM versus aftermarket on CGI specifically, we stock genuine CGI sash balances, locking mechanisms, and weatherstrip because the company’s aluminum alloy specification (6063-T6 with a specific anodize thickness) mates precisely with their nylon glide components. Aftermarket equivalents exist for some items - generic pile weatherstrip, for example - but we won’t install them on impact-rated assemblies where the Miami-Dade NOA (Notice of Acceptance) specifies the original manufacturer’s tested configuration. That documentation matters if you sell the property or file an insurance claim after a named storm.

Signs Your CGI Home Additions & ADU Is Failing

• Visible moisture between glass panes. The insulated glass unit’s seal has failed, which in Boca Raton’s humidity means the desiccant is saturated and the low-E coating is degrading from the inside. We see this accelerate in west-facing additions where afternoon heat builds against the frame.
• Hardware operates with grinding resistance or pops out of track. The sash balance is losing tension or the roller assembly has corroded from salt air infiltration. In coastal Boca Raton properties east of Federal Highway, we replace these every 8-12 years even on anodized frames.
• Daylight visible at the frame-to-wall interface. The installation sealant has separated from the substrate, or the structural buck has shifted. This is the failure mode that leads to drywall damage and, in an ADU, potential mold remediation.
• Impact glass shows spider cracking without obvious impact. Thermal stress from inadequate frame expansion clearance, or the unit was installed without the specified setting blocks that CGI’s NOA requires. We’ve found this in three Mizner Park-area additions where the original installer skipped the detail.
• Locking points don’t engage simultaneously. The multipoint lock mechanism has worn or the frame has racked slightly from foundation settlement. In Boca Raton’s sandy soils, even minor settling throws off precision hardware.

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Replacement Cost & What’s Included

For a CGI-integrated home addition in Boca Raton, the installed range runs $45,000-$130,000 for the full structure with window and door systems included; component-level repair or replacement of existing CGI assemblies typically falls between $800-$4,500 depending on whether we’re addressing a single failed unit or resealing an entire addition’s interface. What drives that spread: the glazing specification (standard laminated impact versus enhanced missile-impact for coastal zones), whether the original frame can be preserved or requires full removal, and the wall finish repair scope - stucco match in Boca Raton’s common Santa Barbara or smooth finish styles takes skilled labor.

Our quote is a flat written price with a written scope, delivered before any work starts, every time. The number includes parts, labor, disposal, and the documented photo record we provide as standard. Under our 365-Day Done Right Promise, if the seal fails or the hardware binds inside that window, we make it right. No change to the scope proceeds without a signed change order - that’s Clause 1 of The Haven Standard, and it’s why our projects finish within a few percent of the agreed number.

DIY or Call Us?

An owner can safely inspect the visible symptoms: run your hand along the frame edge to feel for air movement, check the weep holes at the sill for blockage from Boca Raton’s palm debris and pollen, and photograph any etched codes for us to identify. What goes wrong with DIY on CGI impact-rated assemblies is the reinstallation detail - the structural silicone back-bedding, the specific fastener torque that doesn’t distort the thermal break, the continuity of the water-resistive barrier that ties into your addition’s wall system. Get any of that wrong and you’ve compromised the impact rating and the warranty.

We carry common CGI balances, locks, and sash assemblies on our trucks, and our technicians are background-checked and uniformed. If you’re seeing symptoms, call (754) 254-8065 to schedule your free estimate. We’ll identify the exact part, quote the installed price in writing, and show you the photo record when we’re done.

FAQs