CGI Door Installation Nationwide | Sightline Windows & Doors Miami Gardens

CGI Door Installation: The Miami Gardens Owner’s Guide

CGI door installation in Miami Gardens typically runs $2,800-$6,400 for a standard single entry unit, depending on series, impact rating, and whether the frame needs reframing. We stock CGI-compatible hardware and frame components for same-day starts on most Series 3750, Sentinel, and Estate Collection units, and we carry PGT and CWS equivalents when a CGI lead time would push a job past the agreed window. Most homeowners first realize something’s wrong when the door won’t latch flush after a storm, or when they notice daylight along the jamb that wasn’t there last season.

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Which CGI Models This Applies To

CGI manufactures three door lines we install regularly in Miami Gardens: the Series 3750 impact-rated aluminum entrance system, the Sentinel fiberglass entry line, and the Estate Collection thermally broken aluminum doors. The Series 3750 uses a proprietary 4-9/16″ jamb depth with a composite thermal break that differs from PGT’s 4-5/8″ nominal dimension; mixing parts between manufacturers here creates a gap that shows up on the infrared camera every time. Sentinel doors carry a fiberglass skin over a polyurethane core, and their hinge mortises are cut to a pattern that aftermarket hinges rarely match without shimming that voids the air infiltration warranty.

To identify your unit, check the hinge-side jamb for a laser-etched label with the series prefix (3750, SNT, or EST) and a six-digit lot number. The threshold cap on Estate Collection units snaps into a T-slot extrusion that looks standard but measures 1.375″ wide; the big-box replacement caps at 1.25″ will rock and leak. We source OEM thresholds and weatherstrip from CGI’s Opa-locka distribution center, though we also stock Florida-tested aftermarket equivalents when the lead time matters more than the logo. If the spec isn’t on the page, it isn’t part of the job.

Signs Your CGI Door Installation Is Failing

• The deadbolt binds or won’t throw fully. In Miami Gardens, the combination of salt air and seasonal humidity swells the jamb slightly while corroding the strike plate; we measure this with a feeler gauge and find gaps that have opened to 3/16″ or more, well past the 1/8″ maximum in CGI’s installation manual.
• Daylight visible at the top corner of the door on the latch side. This usually means the hinge screws have backed out of the framing or the composite shim pack has compressed; on impact-rated units, this gap also breaks the continuous seal required for the HVHZ certification.
• Threshold leaks during driving rain. The TPE bulb seal on Series 3750 thresholds hardens after roughly 6-8 years of UV exposure in south Florida, losing its memory and creating a channel that channels water inward instead of outward.
• The door drags or sticks seasonally. Aluminum frames expand roughly 1/8″ per 10 feet of jamb between a 65°F January morning and an 92°F August afternoon; if the installer didn’t leave proper head clearance, the door binds in summer and gaps in winter.
• Interior condensation between the door glass. On Estate Collection units with factory glazing, a failed IG unit shows fog that won’t wipe away; the spacer has lost its desiccant saturation, and the U-factor has effectively doubled.

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Replacement Cost & What’s Included

These ranges include the measured survey, the written scope, permits pulled where Miami-Dade requires them, and the documented photo record. What drives the spread: frame condition (whether we can reuse the buck or need to reframe), wind-borne debris zone rating (Miami Gardens sits in a mix of HVHZ and non-HVHZ parcels, and the product selection changes accordingly), and whether the existing rough opening is plumb within 1/8″ or needs correction. Every quote is the final invoice; Haven Clause 1 means the price on the page is the price on the card reader. The 365-Day Done Right Promise covers labor and installation materials; manufacturer defects go through CGI’s 10-year limited warranty.

DIY or Call Us?

There are two things a homeowner can safely check before calling: whether the hinge screws are tight (a #3 Phillips, turned gently), and whether the threshold drain holes are clear of debris. Beyond that, CGI impact-rated doors weigh 85-140 pounds depending on size and glazing, and the frame must be held square within 1/8″ while fastened to structural framing at specific intervals; a door hung out of square will leak, bind, and eventually warp the slab. The safety issue is the weight and the wind-load rating: an improperly installed impact door is a structural liability in a named storm, and your insurer can document that. We bring the laser level, the structural screws, and the Miami-Dade NOA paperwork; you bring the measured survey home with you. Call (754) 354-6649 to schedule your free estimate.

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