Before repairing a skylight drip that begins during thaw

Do not start with the cosmetic finish

A skylight that drips during warming weather may involve exterior leakage, snowmelt, condensation on cold components or blocked drainage paths.

Define the repair question

Ask which layer failed, what trigger activates it, how far the pathway may extend and what evidence will show that the source—not only the visible mark—was addressed.

Preserve a baseline

• Record indoor humidity and outdoor temperature
• Photograph the exact first wet edge
• Compare a thaw event with a later rain event
• Keep one dated overview photo and one close view from the same position.
• Record the trigger state before work begins.

Scope questions worth asking

• Which competing cause was considered and what evidence weakened it?
• Which concealed layers may need access and which will remain untouched?
• How will wet or damaged material be assessed before closure?
• What comparable post-work condition will be used to verify the result?

Avoid the common shortcut

Do not assume all skylight water is failed exterior flashing or all of it is condensation.

Escalation boundary

Use a roofer for exterior opening and a building professional when air leakage or condensation around the shaft is suspected.