Window Leak - Weep Holes?

[Notch7]

Update.... after filling the cavity under the frame with foam the water bow only comes in the corner one side. Hopefully you can see the picture but it's on the inside of the brick an inch away from the window frame. Any further thoughts guys?

I would remove the external trims and re silicone.

and check whether the cill weep holes are not blocked -any water getting into the direct glazed light will run down the bottom rebate an discharge into the cill -the cill is a hollow extrusion so the water should run out of drain holes underneath but clearing the brickwork -if they are blocked the water can get out at the ends of the cill if the ends arent sealed

 

[pundabuyer]

Thank you so much for the great response. It's obviously a stressful problem so I'm so appreciative of the help.

I'll remove the trim and re-silicone.

I didnt notice any chill drains so I'll check for them too and report back