Kitchen Window Leaks

I have a little barn-style house that was slapped together by subcontractors in 2018. They did a very basic window installation, and it's clear that they neglected to finish the windows properly. (No flashing, or whatever other materials are necessary to make windows watertight.) When the rain hits my kitchen window, water comes in all along the top edge. I caulked the exterior of that window (top and sides) and the top and sides of the boards that frame the window. I even caulked along the top edge of the long horizontal piece of trim that goes from side to side above that window. The rain has not been deterred. The second story window occasionally seeps moisture when it rains, but it's never as bad as the kitchen window. If anyone can point me in the right direction as to how to solve this problem, I would be most grateful.

 

You would need to post a photo of the exterior of your house. One showing the leaking window from the outside and one showing that entire side, including the window above.

 

Agreed with the pics. Window leaks are often leaking at the window... but just as often are actually leaking higher up and just happen to be visible once they hit the window. So you'll need better flashing/caulking/sealing all the way up the wall.