What is the most expensive part of replacing a roof?

Labor runs about 60% of the total bill on an asphalt-shingle tear-off and replace. Linta's SIGNATURE shingle package on a 3,000 sqft Myrtle Beach home runs $11,900-$18,250, with labor as the largest line. The hidden line is rotted decking found after tear-off, common on older oceanfront homes from Surfside to Little River. Material choice swings the rest: ESSENTIAL starts at $10,200 and PREMIER tops out at $20,740. Standing-seam metal jumps to $30,000-$51,000. A GAF Master Elite Golden Pledge warranty folds 25-year workmanship coverage in at no extra material cost.