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Factors That Affect the Lifespan of Roofs
The average lifespans of the different roofing materials are based on “average” or “normal” conditions. Nobody can expect them to reach their full lifespan if they’re continuously exposed to harsh environments. However, the weather isn’t the only thing that can affect the lifespan of roofs. Here are some other factors that also play a big role.
Color
Many people don’t pay much attention to the color of the roof, other than matching it to the overall color theme of the home. However, you should know that a dark colored roof absorbs more heat, and heat can affect the roof’s durability and therefore, lifespan.
Roof Slope and Orientation
Roofs that have a higher slope tend to last longer. However, if the slope is facing direct sunlight, it will have a shorter lifespan.
Ventilation
Ventilation plays a big role in the lifespan of the roof. Attics that have poor ventilation will result in shorter roof lifespan.
Installation
It doesn’t matter how tough the roofing material is. If the installation is poor, then there’s a good chance that your roof won’t last very long, or that it won’t reach its minimum life expectancy.
Trees
Trees are good for the environment, but they can wreak havoc on a roof. The branches of the tree can scratch your roof during strong winds; a branch or an entire tree might fall down and not only destroy your roof, but part of your home as well. Shaded areas of your roof may also not dry completely, resulting in rot and deterioration.
Quality of material
The saying “you get what you pay for” is always true, especially for roofing materials. Quality materials will certainly cost more, but you can be sure that they’ll last longer. If you skimp on quality, don’t expect your roof to last as long as you would like it to.
All the above factors play an important role in a roof’s average lifespan, but one factor typically plays the biggest role – maintenance. If you look at manufacturer warranties closely, you’ll find that poor maintenance can void the warranty. In Part III, we’ll discuss proper roof maintenance procedures.
