My skylight is leaking. What can I do to fix it?

Fixing a leaking skylight involves a step-by-step approach starting with immediate interior protection and moving toward exterior diagnosis and repair. Begin by placing buckets and towels inside your home to catch dripping water and prevent damage to floors and furniture. Once the weather clears and the roof is completely dry, safely access the roof to inspect the skylight's exterior components, checking for clogged debris channels, cracked glass, or deteriorated metal flashing. For minor leaks caused by small gaps in old caulk, clean the surface thoroughly and apply a thick bead of exterior-grade polyurethane or silicone sealant. If the leak persists or the flashing is severely damaged, rusted, or improperly installed beneath the shingles, you will need to hire a certified roofing professional to strip back the surrounding materials and install a new, watertight flashing kit.