Fiberglass/Asphalt Shingle Systems

Lost Pines Resort, Cedar Creek, Texas

Fiberglass/asphalt shingles are by far the most popular product used in roofing today because of their attractive architectural appearance and cost. The fiberglass mat provides resistance to tearing and because glass is resistant to heat and humidity, the fiberglass reinforcement is especially resistant to curling and is more durable in warm climates. The asphalts primary purpose is to serve as the waterproofing agent. The asphalt is also what holds the granules in place and adds to the overall strength of the shingle. The granules are made of fine-grain, opaque, crushed rock particles that have been colored by a ceramic coating. The granules serve two purposes. The primary function is to block ultraviolet (UV) rays from reaching the asphalt in the shingle. The other function of the granules is to give the specific color to the shingle. Most shingles have a blend of 3 to 5 different colored granules to give it a richer look and to achieve aesthetically uniform color appearance. Most shingles manufactured today have some kind of algae-resistance warranty. This is achieved because the manufacturer uses a copper based granule mixed in with the other granules. The copper produces an environmentally safe cuprous oxide wash when dispersed by rain. The wash inhibits growth of algae and algae staining.

Because Shingle roofs are designed to shed water. Risk of water penetration increases as the slope of the roof decreases. Shingles can not be applied to a slope less than a 2/12.

Shingles are rated by their life expectancy and wind rating. While both vary significantly by manufacturer, a homeowner should be aware of what is being installed on their roof. Shingle life expectancy ranges from 20 years to life. And the wind rating ranges from 60mph for a basic economy shingle to 110mph for the grand daddy of shingles.

Shingle roof systems which A. D. Willis Company Inc. installs include:
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