In this video, I explain how I repaired a leaky hinged type escape hatch skylight from Seitz Dometic in my Sprinter Class C roof by working from the inside, removing the trim and tightening down the skylight mounting clamps with a few noteworthy and necessary modifications.
If you have this type of skylight hatch in your rig, you will want to watch this video as your skylight may not be as securely attached as you think and will eventually spring a leak.