Gaf Camelot Ii Weight Per Square . Number of pieces per bundle. 10/26/2015 product information sheet camelot® ii shingles the beauty of a camelot® shingle. Shop GAF Camelot II 25sq ft Antique Slate Laminated Architectural Roof from www.lowes.com Number of bundles per 100 sq. With a stone surface and an “a” fire rating, these shingles are available in barkwood, hickory. Gaf timberline roofing shingles cost around $3 to $5 per square foot installed ($6,000 to $10,000).