div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=gaf-roofing-shingles-materials-make-sure-your-contractor-is-licensedhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: GAF Roofing Shingles MaterialsMake sure your contractor is licensed to perform roofing services in your state or municipality Ask to see a copy of their insurance certificate loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentinreader033viewer20220504175f8d4a6b070fed50cd3daa13html5thumbnails1jpg width=140 height=200 divdiv