Blade Signs: Wind Resistivity and Design Considerations

Blade signs, also known as projecting signs or flag-mount signs, are a popular type of signage for businesses of all sizes. They are mounted to a building façade or architectural surfaces, such as a post or pole, at an angle perpendicular to the flow of traffic. Blade signs are typically double-sided to be viewed from both directions.

One of the most important considerations when designing a blade sign is wind resistivity. Blade signs are exposed to the elements, so they need to be able to withstand high winds without being damaged. There are a number of factors that affect the wind resistivity of a blade sign, including:

• Size and shape: Larger blade signs are more susceptible to wind damage than smaller signs. Signs with complex shapes are also more likely to be damaged by wind than signs with simple shapes.
• Materials: Blade signs are typically made of metal, wood, or acrylic. Metal signs are the most durable and wind-resistant, but they are also the most expensive. Wood and acrylic signs are less expensive than metal signs, but they are also less durable and wind-resistant.
• Construction: The way a blade sign is constructed also affects its wind resistivity. Signs that are well-constructed with strong welds and fasteners are more likely to withstand high winds than signs that are poorly constructed.

In addition to the factors listed above, there are a number of design considerations that can help to improve the wind resistivity of a blade sign. These include:

• Using a truss structure: A truss structure is a triangular framework that provides additional strength and support to a blade sign. Truss structures are especially important for large blade signs.
• Using wind vents: Wind vents are openings in the sign face that allow wind to pass through without causing damage. Wind vents can help to reduce the wind load on a blade sign.
• Using rounded corners: Rounded corners are less likely to catch the wind than sharp corners. This can help to reduce the risk of wind damage.

If you are considering installing a blade sign, it is important to consult with a qualified sign company to ensure that the sign is properly designed and constructed for your specific location and wind conditions.

Here are some additional tips for improving the wind resistivity of your blade sign:

• Make sure that the sign is securely attached to the building or pole. Use heavy-duty brackets and fasteners that are rated for the wind conditions in your area.
• Inspect the sign regularly for signs of damage. If you find any damage, make repairs immediately to prevent further damage.
• Consider having the sign professionally inspected and maintained on a regular basis.

By following these tips, you can help to ensure that your blade sign is wind-resistant and will last for many years to come.