CertainTeed Corp., Valley Forge, Pa., unveils the all-new sixth edition of the Shingle Applicator’s Manual (SAM), fully illustrated and containing the most up-to-date information on shingle roofing installation. The manual features application instructions for all CertainTeed shingle products, and also includes extensive information on flashings, underlayment, decking and ventilation, as well as important guidelines for workmanship. The sixth edition SAM has been updated to include new installation tips from contractors, new test questions, updated product warranty information and updated application instructions.