Knowledge

If Copper is the Range Rover of Roofing, then Aluminum roofing sheet is could easily be considered the Dune Buggy of Roofing. Stay with us here. Take a Volkswagen Beetle, pull off the doors, the roof and all unneeded features. Seal off the essentials to prevent salt spray, add a roll cage and upgrade the suspension.  Throw some nice sand tires on the thing and take it for a cruise along the beach… you now have the vehicle that best describes the strength and corrosive durability of an Aluminum roofing sheet.

Aluminum roofing sheet is often recommended for use in coastal climates. This is mainly due to aluminum's resistance to salt corrosion compared to other types of metal roofs. While the common perception of Aluminum is that it is not effected by corrosion, the reality is that it is a highly active metal and almost instantly reacts to atmospheric conditions. This rapid reaction is actually what protects it so well. The outer layer of aluminum reacts with the oxygen in the environment creating a layer of aluminum oxide, effectively sealing the inner layers of the metal from any future corrosion.  This process is similar to an A606 Weathering Steel process, but in a much faster time frame and with longer lasting protection. Aluminum is often used with a painted coating as it's natural patina over time is not thought of as aesthetically appealing.

Like Copper, Aluminum's downside often comes down to cost. While it can offer a better protection against corrosion, it is also more expensive than comparable solutions that use aluminum as a coating.  As a commodity, Aluminum's price range fluctuates depending on the market. Typically, the price for this metal lies somewhere in the middle between steel and copper. Because of it's price, Aluminum is often used in much thinner thicknesses than steel. 

While Aluminum's strength to weight ratio is higher than steel, the factor of cost often results in panels that are too thin for their surroundings. In regions with high winds, hail, or strong environmental stresses, this can result in damage to the roofing material. Properly identifying the environmental strains that your Aluminum Roofing sheet will face will be crucial in choosing the right design.