Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Construction in Miami, CA | Rowan Construction Group
Rowan Construction Group provides independent CGI service in Hialeah and across Miami, handling everything from emergency storm prep to full impact-rated replacements on CBS homes and high-rise condos. The single thing that makes our CGI work here different is the High-Velocity Hurricane Zone code itself: if a window lacks a Miami-Dade Notice of Acceptance, it cannot legally go into your opening, and we build every quote around that reality. Call (470) 298-9650 for a written price before any work starts. We are not a CGI dealer or manufacturer affiliate, so the recommendation you get is based on what your structure needs, not what a program tells us to sell.
Why Miami Residents Choose Us for CGI Service
Our crews have spent years diagnosing CGI installations across Miami’s CBS homes and coastal high-rises. That focus gives us a read on how CGI Estate and Classic lines actually behave here, where salt air and 80% humidity punish fasteners, seals, and frames in ways a wood-framed house in the rest of the country never sees. Grant Rowan founded this company in 2007, trained in construction technology at Los Angeles Trade-Technical College, and the discipline we run on is the same one he learned in those estimating classes: the number goes in writing before the tools come out. Under Clause 1 of the Haven Standard, you get a flat price with a written scope before anyone starts. We use OEM CGI hardware when original geometry must be preserved for code, and NOA-approved aftermarket glass when it matches the impact rating and saves you real money. Every visit includes a documented photo record, so you leave with evidence of what we found and what we did.
Common CGI Construction Problems We Solve in Miami

- Failed corner seals on CGI Estate casement windows. After 15 to 20 years of salt-air exposure, the butyl seals at the corners begin to fail and the glass fogs from the inside. We reglaze when possible, and recommend full replacement when the frame itself shows corrosion.
- Warped or delaminated impact glass in single-hung units. When the original glazing tape degrades, water works in behind the frame and the monolithic laminate starts to separate. That is a safety issue and a water-intrusion issue, and we treat it as both.
- Sliding glass door rollers seizing from humidity and limestone dust. Miami’s combination of moisture and fine dust from the Miami Limestone substrate causes CGI rollers to bind, tracks to clog, and frames to rack out of square. We replace the roller assemblies with OEM parts and re-align the track before the frame takes damage.
- Weep-hole blockages in sill tracks. East-facing oceanfront units in Brickell and Edgewater are the worst for this: standing water sits in the track, corrodes the frame, and eventually leaks into the wall cavity. Clearing the weeps is step one; step two is explaining why the corrosion pattern matches the exposure.
- Fogged glass mistaken for a failed unit. A good number of the “failed” CGI windows we inspect in Little Havana and West Miami still have serviceable frames. The seal is gone and the insulating value is degraded, but the frame can take a new NOA-listed glass package. We will tell you which path costs less, and we will put that number in writing.
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AfterCGI Service in Miami: What Local Conditions Mean for Your Equipment
Miami-Dade’s NOA product database lists over 1,200 approved impact window products, and CGI is one of only 13 brands with full approval for both the Estate and Classic lines across all six HVHZ wind zones. What that means for you is practical: our crews can pull permits on most CBS homes without a structural engineer’s product evaluation, which is a step that stops projects cold anywhere outside the county. We see the difference on the ground. One of our techs just finished a replacement on a 1958 CBS ranch off SW 8th Street in West Miami, where three original CGI Estate single-hungs on the south elevation had lost their edge seals - the same attention to detail we bring to Miami Driveway & Pavers projects. We removed the frames, re-anchored into the CMU with epoxy-coated Tapcons, and set new NOA-listed impact units with butyl tape and stainless screws. The job finished in one afternoon. The city inspector passed the nail-fin inspection with zero corrections, only after checking the window sticker against the NOA database. That is the discipline Miami-Dade rebuilt after Hurricane Andrew, and it is the reason a contractor relocated from another state gets caught on their first job here.
CGI Models & Products We Service in Miami

We work on the CGI Estate Collection, the CGI Classic Collection, Estate Impact Windows, and Estate Sliding Glass Doors, along with the hardware that keeps them operating. Our parts approach is simple: OEM CGI replacement hinges, rollers, and lock sets when the original geometry matters for code compliance; NOA-approved aftermarket glass packages for reglazing when they match the original impact rating and cut 20 to 30 percent off the cost. For anything over 20 years old with corroded frames or failed seals, we usually recommend full replacement over repair, because re-certification and labor rarely pencil out cheaper than new units. If you need CGI sales & service advice on whether to repair or replace, we will walk the property and tell you what we would do if it were our house.
CGI Service Pricing in Miami
The range below is what we quote across the Miami service area, and it is what we will put on your written estimate. What drives the final number is the size of the opening, the frame condition, the number of units, and whether the glass needs a NOA-listed replacement package or the whole unit comes out.
| Service | Price Range |
|---|---|
| Impact Window Installation | $9,440 - $29,500 |
| Window Replacement | $5,310 - $17,700 |
| Roof Replacement | $9,440 - $23,600 |
Every estimate includes a written scope, a written warranty, and the photo record from the day we inspect. Call (470) 298-9650 and we will send someone out to measure and quote. The price you see is the price you sign.
Serving Miami, FL - Our Local Coverage Area

We’re based in the Miami area and know this community well, from Fence Installation - Miami to window service. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - CGI Construction in Miami
No. A CGI window without a Miami-Dade NOA cannot legally be installed in Miami, period. We verify the product sticker against the NOA database before work begins, and the inspector will check it again.
If the frame is sound, we can reglaze with a NOA-approved aftermarket glass package that matches the original impact rating, usually saving 20 to 30 percent over a full unit replacement. If the frame shows corrosion or the corner seals are gone, full replacement is the honest recommendation. Call (470) 298-9650 and we will inspect it for free.
We replace the seized roller assemblies with OEM parts, clean the track, clear the weep holes, and re-align the frame. If the frame has racked out of square from repeated forcing, we will tell you that too, because a door that binds is often a warning sign.
Yes. Salt-laden humidity accelerates corrosion on aluminum frames, fasteners, and internal hardware, especially within a few blocks of the ocean in Brickell, Edgewater, and South Beach. We specify galvanized or epoxy-coated fasteners on coastal work for exactly that reason.
They may be, but the seals are likely failing and the laminated glass may be delaminating. After 20-plus years of Miami humidity, the frame is the unknown. We will inspect each unit, show you what we find in the photo record, and give you a written repair-or-replace number. Call (470) 298-9650 to schedule that inspection.
Service Areas Near Miami

We serve Miami and the surrounding communities across Miami-Dade County, including Hialeah, Little Havana, West Miami, Coral Gables, and the coastal corridor through Brickell and Edgewater. If you are outside the immediate city, we also handle CGI service in Oakland and CGI service in Arlington for clients with properties in those markets.
Book Your CGI Service in Miami Today
Measure twice, say it once, show your work. Call (470) 298-9650 and we will schedule your CGI inspection, put the repair-or-replace number in writing, and tell you what your windows will do in the next storm before you spend a dollar.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Miami since 2007.







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