Place a bucket or container under the leak
Move furniture and valuables away from the area
Use a tarp to cover the damaged roof section from the outside if it is safe to do so
Apply roofing tape or a waterproof roof patch to small cracks or holes
Replace missing or damaged shingles
Seal flashing around chimneys, vents, skylights, and roof joints
Clear gutters and downspouts of debris
Check for damaged or loose nails and fasteners
Inspect roof valleys for cracks or gaps
Remove standing water from flat roofs
Dry the affected attic or ceiling area
Cut out and replace any water-damaged insulation or drywall
Call a licensed roofing professional for major damage or hard-to-reach leaks