You’ve definitely seen a London ON home using aluminum panels, and it does look like a premium property just by the sheen of the roofing material. It is additionally helpful that aluminum roofs are lightweight and malleable making it easier for reputable London ON roofing contractors to install them in the swiftest yet precise manner possible.

However, aluminum isn’t just for show or convenience. It offers a great level of durability, performance, and protection for beachside and properties in high salt air environments. One such environment is a riverside property or anywhere saltwater or a degree of salt travels through the air. Normal metal will definitely rust and corrode in such environments. Here’s an explanation how this happens from Sciencing.

The Two Ways Metal Rusts Due to Saltwater

Electrochemical Corrosion

One form of corrosion that occurs when metal and saltwater get together is called electrochemical corrosion. Metal ions dissolve in water and saltwater conducts electricity and contains ions, which attract ions from other compounds. During electrochemical corrosion, electrons from other compounds are attracted to the metallic ions. Saltwater attacks the metal and corrosion occurs.

Anaerobic Corrosion

As the second type of corrosion that occurs when metal is exposed to saltwater for an extended period, anaerobic corrosion leaves deposits that contain sulfates and surround the metal as it sits in saltwater; Hydrogen sulfide is produced which then corrodes metals. At the same time, bacteria grow in the saltwater which used the hydrogen to corrode the metal as well. Between the ions, sulfates and bacteria, metal is attacked from all angles when it is in saltwater. (Source)

We consider aluminum roofs as metal roofs. However, they do not rust. How does the metal roofing material achieve this great feat? Will its non-rusting and corroding capabilities last throughout its lifespan? Here is one myth-breaking fact: aluminum does corrode in the presence of salt. How it resists further corrosion is the way it prolongs its lifespan and durability.

Hunker has a great explanation that illustrates how aluminum roofs achieve such a feat of resisting saltwater and high salt air damage for long periods of time. Read more below

Aluminum Roofs ‘Corrode’ To Last Longer


Aluminum is made from bauxite, a mineral that is mined from the earth. To make usable aluminum, bauxite is crushed and sprayed with water, and all traces of clay and silica are removed, according to the Elemental Container website. It is then processed and smelted into a material used for a wide range of products for both commercial and industrial applications. Aluminum has many applications because of its light weight, strength and corrosion resistance. It is also a good thermal and electrical conductor and can be worked into many shapes. These qualities make aluminum a metal that is used for many products for the home.

All metals will corrode in the presence of salts. Though aluminum does not exhibit rusting like steel does, it will develop a chalky film and pitting in the metal surface when exposed to salt for long periods. A neutral soap and water wash will help remove the oxidized film. If the oxidation has built up for a long time, a buffing wheel will help remove it from the aluminum surface. To stop the corrosive effects, however, you must apply a protective coating to the aluminum and keep the coating maintained over time. (Continued)

While aluminum seems like a premium and excellent investment for any residential property in London ON, it has its own set of advantages and shortcomings. Remember, no roofing material is truly perfect — and that includes even the most durable metal roofing materials such as aluminum.

One example of aluminum’s shortcomings is its weakness against tornadoes and extreme wind speeds. Due to its light weight, aluminum roofs can easily tear off during windstorms. Here are a few other things you may need to cope with aluminum roofs as per RoofingCompare.com

The Disadvantages of Aluminum Roofs

High initial cost

Aluminum roofing shingles and metal roofing shingles, in general, have higher upfront costs than asphalt shingles. However, over time it’s possible for homeowners with metal roofs to save on roof replacement costs because of their durability.

Noise

While some people enjoy the “sound of rain on a tin roof,” this noise can be irritating for others. Aluminum shingles are more likely to magnify the sound of rain hitting a metal roof.

Hail

Although aluminum has good overall wind, fire, and impact ratings, it still has slightly more of a chance to be dented by large hail than other roofing materials. (Continued)

Remember, any roofing material’s poor performance — even aluminum roofs — can be offset by excellent roofing installations. When your roofers nail the installation, you can expect your roof to deliver the lengthiest performance and durability possible. In this light, consider working with Cub Roofing for precision metal roof installations. Learn more by contacting us today!