If you're building or renovating a commercial property in Florida's coastal counties, hurricane protection is not optional — it's a code requirement. The question is not whether to protect your glazing from wind-borne debris, but how. Impact-resistant glass and hurricane shutters are both code-compliant methods. They are not equally good choices for commercial buildings. This guide explains why impact glass is the clear winner for most commercial applications, and where shutters remain a legitimate option.
How Florida Code Addresses Hurricane Protection
The Florida Building Code (FBC) requires that glazing in wind-borne debris regions be protected against large-missile impact and cyclic pressure testing as defined in the applicable test protocols. The two accepted methods are:
- Impact-resistant glazing — glass that is tested and approved to resist impact without loss of structural integrity, typically laminated glass with a PVB or ionoplast interlayer
- Non-impact glazing with an approved storm protection system — standard glass combined with a tested hurricane shutter, panel, or screen that provides the required impact and pressure resistance when deployed
Both methods satisfy the code requirement. The Florida Building Code does not mandate impact glass over shutters. But code compliance is a floor — not a ceiling — and the comparison between the two options goes well beyond what the code requires.
In the High Velocity Hurricane Zone (HVHZ — Miami-Dade and Broward counties), the requirements are even more stringent: every glazing product and storm protection system must carry a Miami-Dade Notice of Acceptance (NOA) documenting compliance with large-missile impact testing and cyclic pressure testing per the applicable HVHZ protocols. For more detail on these requirements, see our post on impact-rated glass requirements in Florida.
The Case for Impact Glass in Commercial Buildings
Always Protected — No Action Required
The most significant operational advantage of impact glass over shutters is that impact glass is always in its protected state. There is nothing to deploy, nothing to store, and nothing that can be forgotten or skipped when a storm is approaching. For a commercial building — particularly one that may be unoccupied or lightly staffed during a storm event — this is a major risk management advantage.
Hurricane shutters require physical deployment before a storm. On a large commercial building with dozens or hundreds of openings, that means organized labor, lead time, and physical effort. If the building isn't properly staffed when a storm track shifts overnight, shutters may not get deployed. Impact glass doesn't have this vulnerability.
Continuous Business Operations
Shutters, when deployed, block windows and storefronts. For retail businesses, restaurants, hotels, and any commercial occupancy where natural light and visibility are part of the customer experience, deployed shutters mean dark interiors and shuttered storefronts — even if the business is trying to remain open during a storm approach. Impact glass maintains the building's full visual and operational function through the entire storm cycle.
Insurance Premium Implications
Florida commercial property insurers consistently treat impact-rated glazing more favorably than non-impact glazing with shutters when underwriting hurricane risk. The rationale is straightforward: impact glass provides passive, always-on protection that doesn't depend on deployment, while shutters introduce operational risk. Talk to your insurer about the specific premium differential for your property — the savings over a multi-year policy can offset a significant portion of the cost premium for impact glass over standard glazing with shutters.
Aesthetics and Building Envelope Performance
Modern impact glass for commercial buildings — particularly laminated insulating glass units (IGUs) with high-performance Low-E coatings — performs at the same level or better than non-impact glass for energy efficiency, visible light transmission, and solar heat gain control. You do not sacrifice building envelope performance by specifying impact glass. You gain hurricane protection as a secondary benefit of the glass itself.
Shutters, by contrast, alter the building's exterior appearance and add a maintenance burden. Accordion and roll-down shutters require periodic lubrication and mechanical testing. Panel systems require storage space. Fabric systems have finite service lives. None of these issues exist with impact glass.
The Case for Shutters — Where They Make Sense
Existing Buildings with Non-Impact Openings
On existing commercial buildings where the cost of replacing all glazing with impact-rated units is prohibitive, approved hurricane shutters may be the most practical path to code compliance on a renovation project. In this scenario, shutters are not the ideal long-term solution — they are a cost-effective bridge that brings a non-compliant building into compliance without a full glazing replacement.
Non-Critical Secondary Openings
On some commercial projects, secondary openings — utility access doors, loading dock windows, mechanical room glazing — may be appropriate candidates for shutter protection rather than impact glass, particularly if they are in less visible or less operationally critical areas of the building. A mixed strategy, with impact glass at all primary facades and shutters at secondary openings, is a legitimate value-engineering approach on cost-sensitive projects.
Historic Buildings
Historic commercial buildings where original window profiles cannot be altered may require external storm protection systems rather than replacement impact glass. This is a specialized scenario requiring coordination with the State Historic Preservation Office (SHPO) and typically involves fabric or panel systems designed to not alter the historic character of the openings.
Cost Comparison: Impact Glass vs. Shutters
| Factor | Impact Glass | Shutters + Standard Glass |
|---|---|---|
| Initial cost premium | Higher upfront glazing cost | Lower glazing cost + shutter installation |
| Ongoing maintenance | Minimal — glass only | Mechanical shutters require periodic maintenance |
| Operational cost | None — always protected | Labor cost to deploy and store before/after each storm |
| Insurance premium | Lower premiums in most markets | Higher premiums due to operational risk |
| Business continuity | Full operation maintained | Blocked views and dark interiors when deployed |
| Long-term value | Permanent building improvement | Depreciating mechanical system with finite service life |
For most commercial new construction and major renovations in Florida's coastal counties, the total cost of ownership for impact glass — accounting for insurance savings, eliminated operational costs, and avoided shutter maintenance — is competitive with or better than shutters over a 10-15 year horizon. The upfront premium for impact glass is real, but it's not the whole story.
Florida Building Code Compliance: What You Need to Know
The Florida Building Code Seventh Edition (FBC-7) establishes wind load design requirements based on the basic wind speed for the project location, the exposure category, the building's occupancy category, and the building's height. For commercial buildings in wind-borne debris regions (basic wind speed ≥ 130 mph at 3-second gust), all glazed openings must be protected by an approved method.
For impact glass, the product must carry a Florida Product Approval (FPA) number documenting compliance with the applicable test standard. The most common test standards for commercial impact glass are ASTM E1886/E1996 for large-missile impact and cyclic pressure. In the HVHZ, Miami-Dade Protocol PA 201/202/203 is the required test standard.
A common misconception is that any laminated glass qualifies as impact-rated. This is incorrect. Laminated glass is not impact-rated unless it has been tested as a system — glass, interlayer, and framing — and carries a specific product approval for the design pressure and impact requirements at your location. The product approval is what makes glass "impact-rated" under Florida law — not the laminate construction alone.
See our detailed post on Florida commercial glazing hurricane code requirements for a full walkthrough of how to verify product approval compliance on a project.
ACG's Impact Glass Projects
ACG has installed impact-rated commercial glazing on over 350 projects across Florida, including storefronts, curtainwall, window wall, and specialty systems in HVHZ and wind-borne debris region locations. Our project portfolio includes completed impact glass projects across South Florida, the Treasure Coast, Southwest Florida, and the Tampa Bay market.
Every ACG impact installation is backed by complete Florida Product Approval documentation and, where required, HVHZ NOA compliance packages. We do not substitute non-approved products, and we do not cut corners on anchor patterns or installation sequences to meet schedule pressure. Our inspection record reflects that commitment.
If you're evaluating impact glass for a new commercial project, use our Scope Engine for a preliminary estimate, or contact us directly through our contact page with your plans for a complete scope within 48 hours.
The Verdict: Impact Glass for Commercial Buildings
For commercial new construction and major renovations in Florida, impact-resistant glazing is the better choice in virtually every category that matters to a commercial owner or developer: operational simplicity, business continuity, building aesthetics, long-term maintenance burden, and total cost of ownership. Shutters have a legitimate role in specific retrofit scenarios and secondary openings, but they are not the right primary hurricane protection strategy for a commercial building built or renovated to current standards.
The Florida Building Code gives you a choice. The economics and operational realities of commercial building ownership point clearly to impact glass.