Is the moisture on the unit or around it?
Moisture on glass, at a frame corner, and on the ceiling around an opening are different observations. VELUX service guidance distinguishes profile condensation, corner-key repair, and glass replacement for specific models.
Does the skylight or flashing need work?
Model, opening size, roof pitch, and compatible flashing affect replacement choices. We evaluate the unit and roof connection separately so the repair matches the affected component.
What happens to the room below?
A light shaft opened for roof work may need protection and finish restoration. Include access over stairs or tall ceilings, plus any trim or ceiling work, in the project plan.

