Impact windows and hurricane security screens can both support a commercial opening-protection plan. The central project difference is scope: impact windows replace the window assembly, while Fortress Screens add a permanent exterior barrier over suitable existing openings.
For an occupied commercial building, the decision affects more than storm protection. Owners and project teams should compare installation access, work-area disruption, everyday security, appearance, approvals, repair planning, and the condition of the existing windows.
Key takeaways
- Impact windows replace the existing glass-and-frame assembly with a tested impact-resistant system.
- Fortress Screens are mounted outside suitable existing windows and doors, which may reduce interior work at the opening.
- Exterior stainless steel mesh adds a physical security barrier before debris or forced entry reaches the glass.
- Neither option should be selected from a generic price or downtime claim; compare project-specific scope, approvals, access, and lifecycle needs.
Commercial comparison at a glance
How each system changes the building
Impact windows replace the opening assembly
Impact windows use laminated glazing in a tested frame-and-anchor system. Installation normally removes the existing unit, prepares the opening, sets the replacement window, and completes the required interior and exterior finish work. This can be appropriate when the windows themselves are aging, leaking, inefficient, damaged, or otherwise due for replacement.
Hurricane screens protect suitable existing openings
Fortress Screens use 12 × 12 stainless steel mesh with 120,000 pounds of tensile strength in a structural aluminum frame. The system is custom measured and mounted outside the selected windows, doors, storefronts, or special-use openings. Suitable existing windows generally remain in place.
Fortress Screens are Category 5 hurricane rated and approved under Florida Building Code numbers FL32125.1-R2 and FL32125.2-R2. The permanent screen also adds a physical security layer and intercepts solar exposure at the exterior. Review the broader range of commercial Fortress Screens applications.
Planning work in an occupied property
Exterior installation can reduce the amount of work performed inside the building, but it does not guarantee zero disruption or eliminate the need for access. Field measurement, substrate inspection, attachment work, egress requirements, equipment placement, safety controls, and the opening type all affect the installation plan.
For medical offices, retail spaces, schools, offices, multifamily properties, and other occupied facilities, the useful question is not whether work is “disruption-free.” It is how the contractor will phase the work around occupants, entrances, deliveries, protected areas, and operating hours.
Damage, repair, and operating risk
Opening damage can affect safety, weather exposure, security, and access to nearby space. The consequences vary widely by property, opening, lease, insurance policy, and operating plan. A cracked pane does not automatically mean a building must close, and no product can guarantee that glass or operations will avoid every storm-related loss.
After a major event, both systems require inspection. For Fortress, review the mesh, frame, fasteners, substrate, and glass behind the screen. For impact windows, evaluate cracked glazing, the interlayer, frame, anchors, seals, and surrounding opening. Build repair contacts and temporary-protection procedures into the property’s continuity plan before hurricane season.
Insurance and lease questions
Insurance deductibles, mitigation credits, claim handling, and business-interruption coverage vary by carrier, policy, property, and event. Ask the insurer which product approval, installation, inspection, or documentation is required and whether the selected system affects underwriting or premiums. Do not assume a specific discount or claim result.
Tenants should also review the lease. Responsibility for glazing, exterior improvements, insurance, deductibles, maintenance, and business-interruption planning differs among gross, modified-gross, and triple-net agreements. Any building-envelope change requires the owner’s written approval and may require coordination with the property manager, design team, insurer, permitting authority, or lender.
How to compare proposals
- Document the existing openings. Record condition, dimensions, substrate, design pressures, egress, and any water or air-infiltration concerns.
- Define the same scope. Compare proposals covering the same windows, doors, storefronts, entrances, and special openings.
- Review occupied-building logistics. Confirm interior access, work zones, phasing, operating-hour restrictions, dust and noise controls, and reopening criteria.
- Verify documentation. Match the approval, design pressure, anchors, engineering, permits, warranty, and closeout documents to the property.
- Compare complete cost. Include removal, disposal, finish repairs, access equipment, permits, engineering, installation, inspection, and future repair considerations.
Frequently asked questions
Can Fortress Screens be installed while a business remains occupied?
Often, yes, because much of the work occurs at the exterior. However, interior access, restricted work areas, noise, safety controls, and temporary operational changes may still be required. The installation plan must be based on the property and its operating needs.
Are commercial hurricane screens a replacement for impact windows?
They solve the opening differently. Fortress adds an exterior protective barrier while suitable existing windows remain. Impact windows replace the complete window unit. The condition of the existing windows and the project’s other goals should guide the decision.
Will either option guarantee lower insurance premiums?
No. Eligibility and savings vary by carrier, policy, property, installation, and required documentation. Confirm the insurer’s requirements before selecting a system or relying on a projected credit.
Can a commercial project cover only priority openings?
A screen project can be scoped to selected openings or elevations when the resulting plan satisfies the owner’s priorities and applicable approval requirements. The property team should identify critical areas, exposed elevations, entrances, storefronts, and egress openings before requesting a proposal.
Decision summary
Choose from the building’s actual condition and operating plan
Impact windows may be the better fit when the window assemblies need replacement. Fortress Screens may be the better fit when suitable existing openings can remain and the project needs a permanent exterior hurricane and security barrier with less work inside the opening.
Commercial scopes are custom. Request a commercial project review to define the openings, access, approvals, documentation, and installation approach for the property.