In Roofing strongest among all types of GAF shingles are the ultraroof shingles. They are heavier and much thicker, about 25 percent. They appear like any other type of GAF roofs. They can resist wind and fire, and can offer protection against algae. However, one distinct feature is its ability to last longer than any other types in the series. This is due to the use of the most durable adhesive seals used.