There are two types of asphalt shingles available today: fiberglass and organic. Both have their pros and cons, and in this blog, roofing contractor Mobley Brothers Roofing & Restoration takes a closer look at these two shingle types.
How Asphalt Shingles Are Made
Both fiberglass and organic shingles are manufactured the same way. In fact, the fundamental difference between the two is in the backing material. Fiberglass is a type of flexible composite material, while organic is mostly made of cellulose from recycled paper. Sheets of the backing material are saturated with hot asphalt, then one side is coated with granules. These granules are mostly made of crushed rock, but sometimes are mixed with other types of granules for additional features. For example, algae-resistant shingles are mixed with copper granules. Others would be coated for added protection. The shingle mats are thoroughly cooled, then cut into shingle mats.
Pros and Cons
Nearly every roofing contractor offers fiberglass shingles from one or more manufacturers. One of their greatest features is they tend to have higher fire rating. They are also much lighter, which can shorten the delivery times for large roofing projects. Installation times can also be shortened with lighter roofing material. It should be noted that fiberglass shingles are not suited for cold northern climates, which, fortunately, isn’t the case here in Tennessee.
Organic shingles are mostly made of wood fibers, which means they soak up more asphalt during manufacture, which gives them a longer expected life span if properly installed. It also makes them heavier. The added weight may hinder installation, but it makes the roof more resistant against wind damage. The cellulose in organic asphalt shingles tend to absorb moisture, so it’s important to invest in quality organic shingles. Low asphalt content will leave room for moisture absorption, which can also result in premature granule erosion. On the other hand, too much asphalt can result in granule displacement. It’s important to weigh these pros and cons before making your choice.
Mobley Brothers Roofing & Restoration is your leading provider of residential and commercial roofing services. Give us a call at (615) 645-4500 (Nashville) and (865) 248-2772 (Knoxville). You can also fill out our contact form to schedule an appointment. We serve customers in Knoxville and Lebanon, TN.