Shutter Material: Rolldown Hurricane Shutters Explained

Rolldown hurricane shutters, also known as rolling shutters, are a type of protective barrier installed on buildings to shield windows and doors from the damaging effects of hurricanes and other severe weather conditions. These shutters are typically made from high-quality materials such as aluminum or steel, which are known for their strength and durability. This article provides an in-depth examination of the materials used in the construction of rolldown hurricane shutters, their properties, and their significance in ensuring the effectiveness of these shutters.

Understanding the materials used in the construction of rolldown hurricane shutters is crucial for homeowners, architects, and builders, as it directly impacts the shutter’s performance, durability, and maintenance requirements. This knowledge can guide informed decisions regarding the selection, installation, and care of these protective barriers, ultimately contributing to the safety and longevity of the building structure.

Material Composition of Rolldown Hurricane Shutters

The material composition of rolldown hurricane shutters is a key determinant of their strength, durability, and resistance to weather elements. The most commonly used materials in the construction of these shutters are aluminum and steel, each offering unique advantages.

Aluminum, a lightweight yet strong material, is favored for its resistance to corrosion, making it an excellent choice for coastal areas where saltwater can accelerate corrosion. Steel, on the other hand, is known for its superior strength and durability, making it a suitable choice for areas prone to severe weather conditions.

Aluminum Rolldown Hurricane Shutters

Aluminum is a popular choice for rolldown hurricane shutters due to its excellent balance of strength and weight. Despite being lightweight, aluminum offers a high strength-to-weight ratio, making it capable of withstanding high wind pressures and flying debris during a hurricane.

Another advantage of aluminum is its resistance to corrosion, especially when treated with protective coatings. This makes aluminum shutters ideal for coastal areas where the salty air can cause other materials to corrode rapidly. Furthermore, aluminum shutters are relatively easy to maintain, requiring only occasional cleaning and lubrication of moving parts.

Steel Rolldown Hurricane Shutters

Steel is another common material used in the construction of rolldown hurricane shutters. Known for its superior strength and durability, steel can withstand extreme weather conditions, including high wind speeds and heavy rainfall.

However, steel is prone to rust if not properly treated, which can compromise its strength and appearance over time. Therefore, steel shutters typically require a protective coating to prevent rust and corrosion. Despite this, steel shutters are highly durable and can provide reliable protection for many years when properly maintained.

Material Properties and Performance

The performance of rolldown hurricane shutters is largely influenced by the properties of the materials used in their construction. These properties include strength, durability, corrosion resistance, and weight, among others.

Strength is a critical property as it determines the shutter’s ability to withstand high wind pressures and impacts from flying debris. Durability, on the other hand, refers to the shutter’s ability to maintain its performance and appearance over time, even with exposure to harsh weather conditions and regular use.

Strength and Durability

Both aluminum and steel are known for their high strength, which is crucial for rolldown hurricane shutters. These shutters must be strong enough to withstand the high wind pressures and flying debris associated with hurricanes. The strength of these materials is often enhanced through various processes, such as tempering for aluminum and galvanizing for steel.

Durability is another important property, as it determines how well the shutters can withstand the test of time. Both aluminum and steel shutters are highly durable, especially when treated with protective coatings. These coatings not only protect the shutters from corrosion but also enhance their durability by protecting them from scratches and other forms of physical damage.

Corrosion Resistance

Corrosion resistance is a key property for rolldown hurricane shutters, especially for those installed in coastal areas. Saltwater can accelerate the corrosion process, leading to the deterioration of the shutters over time. Aluminum is naturally resistant to corrosion, while steel requires a protective coating to prevent rusting.

Coatings used for corrosion resistance include paint, powder coating, and galvanizing. These coatings form a protective barrier that prevents moisture and other corrosive substances from coming into contact with the metal, thereby prolonging the life of the shutters.

Manufacturing Process

The manufacturing process of rolldown hurricane shutters involves several steps, including material selection, cutting, shaping, assembly, and finishing. Each step is crucial in ensuring the quality and performance of the final product.

Material selection involves choosing the appropriate metal, either aluminum or steel, based on the desired properties and performance of the shutters. The selected material is then cut into the required sizes and shapes using specialized machinery. The cut pieces are then assembled into the shutter structure, which is then finished with a protective coating to enhance its durability and appearance.

Cutting and Shaping

The cutting and shaping process involves transforming the selected material into the required sizes and shapes for the shutters. This process is typically automated, using computer-controlled machinery for precision and consistency. The cut pieces are then shaped into the desired form, such as slats for the shutter curtain, using processes such as bending and rolling.

It’s important to note that the quality of the cutting and shaping process directly impacts the performance of the shutters. Poorly cut or shaped pieces can lead to weak points in the shutter structure, compromising its strength and durability. Therefore, this process requires careful attention to detail and quality control.

Assembly and Finishing

The assembly process involves joining the cut and shaped pieces into the final shutter structure. This is typically done using fasteners such as screws and rivets, or by welding in the case of steel shutters. The assembled shutters are then finished with a protective coating to enhance their durability and appearance.

The type of coating used depends on the material of the shutters. Aluminum shutters are typically powder coated, a process that involves applying a dry powder to the surface of the shutters and then heating it to form a hard, protective layer. Steel shutters, on the other hand, are usually galvanized, a process that involves applying a layer of zinc to the surface of the steel to protect it from rust and corrosion.

Maintenance and Care

Proper maintenance and care are essential for the longevity and performance of rolldown hurricane shutters. This includes regular cleaning, lubrication of moving parts, and inspection for damage or wear.

Cleaning involves removing dirt, debris, and other contaminants from the surface of the shutters. This not only maintains the appearance of the shutters but also prevents the buildup of corrosive substances that can damage the material over time. Lubrication of moving parts, such as the rolling mechanism, is necessary to ensure smooth operation and prevent wear and tear.

Cleaning and Lubrication

Cleaning rolldown hurricane shutters is a relatively simple process that involves washing the surface with a mild detergent and water, then rinsing thoroughly. It’s important to avoid abrasive cleaners or tools that can scratch the surface and damage the protective coating. After cleaning, the shutters should be dried thoroughly to prevent moisture buildup, which can lead to corrosion.

Lubrication of moving parts is also crucial for the smooth operation of the shutters. This involves applying a suitable lubricant to the rolling mechanism and other moving parts to reduce friction and prevent wear and tear. It’s important to use a lubricant that is compatible with the material of the shutters to avoid causing damage.

Inspection and Repair

Regular inspection of rolldown hurricane shutters is necessary to identify any signs of damage or wear that could compromise their performance. This includes checking for cracks, dents, or other forms of physical damage, as well as signs of rust or corrosion. Any identified issues should be addressed promptly to prevent further damage.

Repair of rolldown hurricane shutters should be carried out by a professional to ensure the integrity of the shutters is maintained. This may involve replacing damaged parts, repairing the protective coating, or adjusting the rolling mechanism for smooth operation. Regular inspection and prompt repair can greatly extend the life of the shutters and ensure they provide reliable protection when needed.


In conclusion, the material composition of rolldown hurricane shutters plays a crucial role in their performance, durability, and maintenance requirements. Both aluminum and steel offer unique advantages, making them suitable for different applications and environments. Understanding these materials and their properties can guide informed decisions regarding the selection, installation, and care of rolldown hurricane shutters.

With proper manufacturing, installation, and maintenance, rolldown hurricane shutters can provide reliable protection against severe weather conditions for many years. Therefore, investing in high-quality shutters made from suitable materials is a worthwhile investment for the safety and longevity of any building structure.

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