Florida's commercial construction market is one of the most impact-window-intensive in the country. The state's coastal exposure, the Florida Building Code wind requirements, and the HVHZ zone in Broward and Miami-Dade counties mean that most commercial buildings in coastal Florida require impact-resistant glazing. But awarding commercial impact window work to the wrong contractor — specifically, to a residential impact window company that isn't equipped for commercial scope — is one of the more expensive mistakes a GC can make on a Florida project.
Commercial vs. Residential Impact Window Companies: A Critical Distinction
Florida has a large and active residential impact window industry — companies that replace windows in single-family homes, condominiums, and low-rise multifamily buildings. These companies are well-suited for residential replacement work. They are not, in most cases, equipped for commercial glazing subcontracting.
The differences are fundamental. A residential impact window company sells finished impact window units to homeowners, pulls homeowner permits, and installs replacement windows with minimal structural engineering involvement. Their submittal process, if they have one at all, is designed for residential building department review — not commercial plan review.
A commercial glazing subcontractor installing impact windows on a commercial project is doing something categorically different. Commercial impact window systems are specified in Division 08 of the construction documents, integrated into the building's structural frame, and installed against a PE-stamped shop drawing package that must pass commercial plan review. The GC is accountable for the subcontractor's submittal package, their Florida Product Approval documentation, their compliance with the construction documents, and their coordination with adjacent trades.
A residential impact window company awarded commercial work may be able to install the glass correctly. The problem is everything before and after: the submittals, the Florida PA documentation, the HVHZ NOA compliance (if applicable), the commercial building department review, the coordination with the structural engineer of record, and the warranty documentation that the owner requires at project close-out.
Florida's Product Approval System Explained
Every impact window or door installed in Florida must carry a Florida Product Approval — a certification issued by the Florida Building Commission that validates the product's structural and wind resistance performance under the design wind pressures for its installed location.
The Florida PA system works like this: manufacturers submit their products to an independent testing agency, which tests the products to the applicable AAMA standards and Florida Building Code requirements. The testing agency certifies the results, the manufacturer submits documentation to the Florida Building Commission, and the state issues a Florida PA number that can be referenced on permit applications and shop drawings.
Each Florida PA is specific to a product, installation configuration, and maximum design wind pressure. The PA documentation specifies the maximum positive and negative design pressures the product is rated for, and the specific installation requirements (anchor types, anchor spacing, embedded depth) that must be followed for the approval to be valid.
In commercial construction, the glazing sub must verify that the impact window system they're specifying carries a Florida PA that covers the design wind pressures at the specific building location, height, and exposure category. This requires understanding the project's wind load design, which is the territory of a commercial glazing contractor — not a residential window installer.
HVHZ: The Highest Bar in Florida
Broward County and Miami-Dade County form the High-Velocity Hurricane Zone — the area of Florida with the highest design wind speeds and the most stringent glazing requirements. All exterior glazing in HVHZ must carry a Miami-Dade Notice of Acceptance (NOA) in addition to the standard Florida Product Approval.
Miami-Dade County administers its own product approval system through the Miami-Dade County product control division. Products must be tested by a Miami-Dade-approved testing laboratory, and the testing protocols include higher cyclic pressure testing sequences than the base Florida requirements. Products that carry a Florida PA but not a Miami-Dade NOA cannot legally be installed in HVHZ.
This matters on every commercial project in Broward or Miami-Dade counties. The glazing sub must be able to produce Miami-Dade NOA documentation for every exterior impact system they specify. If they can't — or if they're citing a Florida PA and assuming it covers HVHZ — the shop drawings will be rejected at plan review.
ACG works regularly in HVHZ. We specify systems with confirmed NOA documentation, and our submittal packages include the complete Miami-Dade product control documentation for every exterior system. This is standard practice for a commercial glazing sub in South Florida, not a specialty service.
Commercial Impact Window Systems ACG Installs
ACG installs commercial impact window systems from ESWindows, CGI Windows (a Guardian Industries brand), and PGT Innovations — the three manufacturers that collectively dominate the commercial impact window market in Florida. Each brand has specific system families with different performance ratings, frame profiles, glass options, and Florida PA / NOA documentation.
ESWindows is a Florida-based manufacturer with a strong commercial product line. Their aluminum storefront and commercial impact window systems are widely specified by Florida architects and carry Florida PA documentation for a wide range of design pressures. ESWindows operates manufacturing facilities in Florida, which affects lead times positively.
CGI Windows & Doors (now part of Guardian Industries) offers commercial impact windows in aluminum storefront configurations with HVHZ-compliant NOA documentation. CGI has been a standard specification on South Florida commercial projects for decades.
PGT Innovations is Florida's largest impact window manufacturer and produces commercial-grade aluminum impact windows with Florida PA documentation. PGT's commercial product line is well-suited for mid-rise commercial applications and has strong factory support for large-volume commercial orders.
What to Ask Before Hiring a Commercial Impact Window Contractor in Florida
Before awarding commercial impact window scope in Florida, ask these questions directly:
Can you identify the Florida Product Approval numbers for the systems you're proposing? A qualified commercial glazing sub knows their standard systems' PA numbers without having to look them up. If the answer is "I'll get that to you," it's a signal they don't do this scope regularly.
If the project is in Broward or Miami-Dade, can you provide Miami-Dade NOA documentation? This is a non-negotiable requirement for HVHZ work. A sub that doesn't know their products' NOA status is not equipped for HVHZ commercial glazing.
What is your submittal timeline? Commercial impact window shop drawings should be submitted within 10 business days of contract execution. A sub that can't commit to that timeline doesn't have a commercial project management process.
Do you do commercial or residential work? Ask directly. A company that describes itself primarily as a residential impact window company — regardless of whether they've done commercial projects before — may not have the infrastructure for commercial subcontracting.
Who manages your submittals? The answer should be a named project manager who owns the submittal process. If the answer is "the estimator handles it," you're not dealing with a commercial operation.
ACG's Commercial Impact Window Experience
ACG has installed commercial impact windows on over 350 Florida projects across all building types — retail, office, medical, multifamily, hospitality, and institutional. Our three Florida offices — West Palm Beach, Naples, and Tampa — each maintain direct supplier relationships with ESWindows, CGI, and PGT, which means we have current pricing, current lead time data, and current product availability information on hand when we scope your project.
Our submittal packages are built for commercial plan review. Every exterior opening in your project gets a specific Florida PA reference — not a generic "impact-rated" notation. For HVHZ projects, every exterior opening gets a specific Miami-Dade NOA reference. Our shop drawings are stamped by a Florida-licensed PE and formatted for commercial building department review, not homeowner permit applications.
If you have a Florida commercial project that needs impact windows, send us the plans. We'll return a scope with system recommendations, Florida PA confirmation, and competitive pricing within 48 hours.