Differences Between Asphalt Shingles and Composition Shingles

By Gerry Donaghue • April 18, 2018
Differences Between Asphalt Shingles and Composition Shingles

A properly constructed roof protects your home from the elements. Asphalt shingles and composition shingles are common for roofing in the United States. There are pros and cons to each shingle type.

Materials

There are two forms of asphalt shingles – organic and fiberglass. Fiberglass asphalt shingles are also referred to as glass fiber.

Organic asphalt shingles are constructed with a paper backing that has a layer of asphalt on top. In a fiberglass asphalt shingle, the backing is fiberglass with a layer of asphalt on top of the fiberglass.

Composition shingles use a fiberglass reinforcing mat that is coated with mineral fillers and then with asphalt. The top surface of the shingles is then embedded with ceramic granules.

Benefits

An option with asphalt shingles is to treat them for resistance to algae growth. This is done by using granules containing leachable copper.

 

Composition shingles are made with moss and algae inhibitors. Composition shingles can also have a special coating that will protect against ultraviolet light. Rays of ultraviolet light from the sun can cause shingles to crack and fade. Composition shingles are available in a wide variety of colors and sizes, including faux finishes such as shake and slate. Composition shingles have a much longer life.

Environmental Issues

Organic asphalt shingles are considered to be less harmful to the environment. Fiberglass asphalt shingles aren’t as environmentally friendly, but they have gained popularity due to increased durability. Composition shingles are environmentally-friendly in that recycled materials are used in their manufacture.

Warranty

The warranty on asphalt shingles can range from five to 20 years, with the time difference based on the strength rating of the shingles. Composition shingles are usually warranted for 30 to 50 years.

Cost

Organic asphalt shingles are less expensive than other types of roofing. Asphalt shingles are cheaper to buy than composition shingles. However, when the cost of composition shingles is based upon the life expectancy of the shingles and the much longer warranty period, composition shingles are more cost-effective.

New Website, Same Commitment to Quality Craftsmanship

February 17, 2025
Welcome to our new website for GT Donaghue Construction & Metal Roofing, LLC! We are so excited to roll out a much needed refresh on our website and share it with all of you. And with a new website comes a reintroduction to us here at GT Donaghue Construction! For those not familiar with us, GT Donaghue Construction & Metal Roofing, LLC (formerly Donaghue Construction) has been in business for almost 40 years working across New Hampshire, Vermont, Maine, and even parts of New York bringing quality craftsmanship and decades of experience to all the projects we complete. Gerry Donaghue, our founder, started this business out of his house formerly in Nashua, NH and has sustained a quality business over the years through hard work and resilience. We have navigated fluctuations in the industry across the years with some years only allowing for a few members on our crew and some calling for multiple crews and larger partnerships. The one thing that hasn’t changed? Gerry’s commitment to high standard work and building relationships with the folks he serves. A family owned business, his daughter Ashley supports him on his admin team (after she did her time driving the dump truck for him as a teenager!), his brother Andrew works on the job site, and his wife Pat has always been there to help when needed-you can sometimes see her in the office or even at a home show! Gerry has a wealth and variety of experience ranging from ground up new builds, additions and interior remodels, deck installations, siding replacements and installations, and of course his favorite-metal roofing installations. Whether it is a unique custom job or a traditional upgrade, GT Donaghue Construction & Metal Roofing can help you out! We hope you enjoy our new website and feel free to reach out to us when we can help at your house!

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