Roofing demand is huge, but the useful slice is specific: 'roofing' has 165,000 volume, 'metal roofing' has 110,000, 'tpo roofing' has 27,100, and 'epdm roofing' has 14,800. High-intent terms like 'install metal roofing' still carry $21.67 CPC, which suggests contractors pay for answers that reduce bid risk.