A tarp is cheap. The water damage it prevents is not. Here's what a proper job looks like.
A tarp is the bridge between the storm and the real repair. After a damaging storm, contractors are often booked for weeks - a correctly installed tarp keeps rain out the whole time and stops a roof problem from becoming a mold problem.
If none of those apply, you can usually wait for a proper inspection without a tarp.
Wet, damaged roofs are genuinely dangerous - slick surfaces, hidden soft spots, and a slope you can't read from a ladder. Professional crews tarp roofs every day and carry the fall protection for it. The cost of a pro job is small next to an ER visit.
According to Angi's 2026 cost data, professional roof tarping averages about $450 nationally, with most homeowners paying $150-$3,300. The main drivers are the size of the damaged area (roughly $0.70-$2.80 per square foot), roof slope and access, and urgency - rush emergency service runs $1.00-$2.80 per square foot.
Most homeowner policies treat tarping as emergency mitigation and reimburse it - keep the invoice and the before-and-after photos. Need someone? Join the launch list and your metro is first in line as the directory opens - nothing is guaranteed yet, so for urgent leaks use the red-flag guide to vet a local crew directly.