A hurricane screen can be excellent on a window and out of range at an airport terminal entrance. The difference is not the fabric: it is the span. As the distance between anchor points grows, the total load, the deflection and the force transferred to the structure all change. A strong fabric does not fix an incorrect geometry.
Fabric strength is not the system
PSI, tensile pounds or storm category add data, but none alone explains what will happen over a specific opening. A system is made of material, edge, connection, hardware, anchor, substrate and structure; the weakest point limits the whole. In an airport the facade may combine curtain wall, steel, concrete and decorative panels that are not always designed to receive a screen at any point.
The most common mistake is to look at the fabric and forget the load path: how force travels from the screen surface to a building element able to resist it. If that path is not documented, the fabric's nominal strength is an incomplete argument.
What changes as the span grows
Picture two ropes of the same material: one two meters between supports, another twelve. They do not behave the same under load. A screen does the same in two dimensions. As the span grows, four problems appear:
- Greater exposed surface: more area means more total force for the same pressure.
- Greater deflection: the screen can move much farther inward or outward.
- Higher demand at the ends: accumulated force concentrates on a few points.
- More geometric complexity: corners, heights, access points and obstacles alter behavior.
There is no automatic right to “scale” a product to any size.
Why 4 meters is a useful red flag
Hurricane Solution uses roughly 3.8 meters as a technical reference threshold and, commercially, the 4-meter rule. It is not a magic boundary of physics but a criterion to stop assuming. Below it, a conventional system can be viable if substrate and design are within parameters; above it, the opening demands specific evaluation. In an airport this rule lets you walk the property and classify quickly: a 2.5 m door is conventional; an 11 m entrance is a special problem.
Anchors: where the fabric discussion ends
Every screen needs a reaction point. When wind pushes the material, the material pulls the hardware and the hardware pulls the building; the loads do not disappear. Anchors fail from insufficient strength, weak substrate, an edge too close, wrong spacing or poor installation. So an airport installation must document what material receives the anchor: structural concrete is not hollow block, and a curtain-wall mullion is not automatically an appropriate structural point. A large span is not a fabric problem; it is a problem of where the force ends up.
Solid screen: blocking more can mean loading more
A solid screen blocks most of the flow, a clear advantage on conventional openings. But as the surface grows that same virtue becomes load: total force can be thought of as pressure times area, and more area means more force to handle. A huge solid screen can behave like a giant sail. The comparison is imperfect, but the more wind it tries to stop, the more the support must resist.
AquaGrid: the load-relief principle
AquaGrid was developed to change that problem. Its roughly 50% open weave lets part of the flow pass through and reduces the effective pressure trying to move the screen as a solid surface. The published technical documentation describes a tensile strength of 7,800 lb and real-world tested applications above 20 meters, using ASTM E1996 as a reference standard. It is not “less protection”: the mesh still stops large debris while relieving the aerodynamic load. AquaGrid does not eliminate forces or make any facade trivial; it reduces the load and widens what is viable when proper engineering exists.
Material testing is not application testing
A supplier may show legitimate impact or tensile data. The next question is always: does that evidence support this installation geometry? A test on a sample or a given size does not authorize unlimited growth. Mexico's AFAC notes that aerodrome certification covers infrastructure, equipment and procedures: you do not certify “a strong runway” while ignoring the rest. Opening protection is evaluated as a whole.
Deflection: the space many quotes forget
Flexible screens work by deforming, and that deflection needs room. If the mesh sits too close to glass, sensors, signage or counters, it can touch what it is meant to protect during a gust or impact. In airport entrances with automatic doors, equipment and pedestrian routes, a professional review must confirm not only where it anchors, but where the system can move and what lies within that volume.
Pressure, suction and shifting direction
A hurricane does not push a facade from a single direction. Wind shifts with the storm's position and the building's geometry: some surfaces get positive pressure, others suction, and corners and edges differ from the center. The National Hurricane Center describes wind and debris hazards; for an airport, the assessment cannot be limited to “the seaward side” but must be a full envelope review.
Quick comparison
| Question | Conventional screen | AquaGrid large opening |
|---|---|---|
| Blocks most of the flow? | Yes | No; open weave |
| Where does it work best? | Conventional spans | Spans above the standard range |
| What happens as area grows? | Total load increases | Effective load drops via the open weave |
| Can it scale without limit? | No | No; every project is reviewed |
| Typical application? | Standard windows and doors | Hangars, entrances and massive facades |
What an airport engineer should request
Before approving a system for a large opening, request at minimum: material identification and relevant tests; the recommended maximum span or criteria to calculate it; opening geometry; anchor detail and receiving substrate; spacing; expected deflection; installation, deployment and maintenance procedures; and the conditions that void the solution. A serious company is not bothered by these questions: it expects them.
Airports already live on checklists, inspections and plans; the FAA and ICAO treat emergency response as a discipline. Large-opening protection must integrate into that culture: identified, stored, trained and assigned, not bought and forgotten in a warehouse. And the best deployment test is not how long an expert technician takes, but how long the airport's own team takes, with its access and permits, measured before the storm.
Cost: price per square meter can mislead
On a large opening the dominant variable stops being the amount of fabric and becomes engineering and logistics. A price per m² works as an initial reference, but it can hide a cheap system that does not match the geometry or an unnecessarily complex one where a conventional commercial solution would do. Classify the opening first, then quote.
Hurricane Solution documents a historical case of an approximately 14-meter glass facade where no conventional system could guarantee the required span; the challenge led to a large-opening solution later tested at greater scale. The lesson: when the opening exceeds the existing solution, the professional answer is not to ignore the limit but to design another solution.
If you could do only one thing
Ask the supplier to write, in one line, the maximum span between anchor points of the system they propose. If they cannot answer clearly, you still lack enough information to approve a large opening. When the span stops being conventional, the solution must stop being conventional too.
Frequently Asked Questions
Can a conventional screen be made 10 meters wide?
Physically, a large piece can be manufactured. That does not prove the anchor system and structure are designed to work across 10 meters between supports.
Why does Hurricane Solution use 3.8 meters?
It is the published threshold at which it recommends shifting the evaluation from conventional systems toward a large-opening solution. Commercially, the rule is 4 meters.
Is AquaGrid just a stronger mesh?
No. Its main difference is the open-weave architecture, which reduces the wind load transferred to the system.
Does a large span always need AquaGrid?
It must be evaluated. The 4 m rule triggers review; the final solution depends on geometry, structure, exposure and project conditions.
What is the most important warning sign?
A supplier who promises any size without explaining the maximum supported span and how loads transfer to the structure.