Gaf Camelot Weight Per Square . Timberline hd shingles weigh 360 pounds per square and have a lifetime warranty. Are gaf shingles any good? GAF Camelot II 25sq ft Charcoal Laminated Architectural Roof Shingles from www.pinterest.com Certainteed’s landmark premium shingle goes for about $150 per square while gaf’s timberline hdz costs about $110 with. Weight per bundle (lb.) 76. Similarly, how much do timberline shingles weigh?