This video shows how GAF was the leading innovator in the evolution of the laminated shingle. By... | See why GAF Shingles are your best and safest choice as we subject our Timberline® Shingles to... | GAF- Mastering The Roof (chapter 13) Flashing is used to seal and protects joints in a building... | GAF- Mastering The Roof (chapter 10) This video demonstrates the proper installation technique... | Industry breakthrough! All GAF laminated shingles now carry a Lifetime Ltd. Warranty. |