GAF® Advanced Asphalt Roof Protection Technology
Shingles Engineered to Endure: Delivering Proven Roofing Performance Since 1886
No One Makes a Better Asphalt Shingle

Toughness

Wind Uplift Resistance

Flexibility

Fire Resistance
Shingle Quality on a Whole New Level
AC438 is the first set of tests for shingles that uses advanced science to predict long-term shingle performance in three critical areas:
All GAF Shingles have passed the requirements of AC438. GAF was the first shingle manufacturer whose shingles passed these torturous tests. We think Mother Nature would be impressed!
The Layers of a Timberline® Advanced Protection® Shingle

What Does Advanced Protection® Shingle Technology Mean For Nature?
Everyone wants to do their part to be environmentally responsible. GAF Advanced Protection® Shingles:


