[Richard]

If you caulk the window frames, use masking tape on both the coach and the frame to get a clean line. Prep the area with solvent to promote adhesion. Pull the masking tape right after you caulk. If you leave it for even 15 minutes it will get stringy and make a ragged line when you remove it.

Check the seams where the slideout outer wall meet the slideout roof. A small crack there dumps a lot of water in the coach