Water penetrating window

[JackShephard]

After a long winter, I've found water has penetrated through a west-facing window. The caulk sealant between the window and wall has cracked pretty significantly. The white paint has bubbled up and there is a dark tint (I'm assuming mold) behind it.

I know I need to remove the paint and apply more sealant, but what do I do about the exterior side where the water is getting in? As you can see in my picture, the exterior of the house is stone that butts up nearly flush with the frame of the window making it very difficult to apply any exterior barrier.

 

[2diamondfarm]

I would try calking between the mortar and window frame.

 

[Richard Cranium]

clean the area real good, make sure it is bone dry and use white silicone to fill the crack between the window and the block, Silicone will expand and contract with the window from heat and cooling.

 

[mypov]

Definitely use silicone, or outdoor rated caulking - grout is not waterproof, that is a little bit of a big deal, as the water that is not getting into your home is now between the faux stone and your outside wall cladding. If there are other windows like this you should definitely clean the area as noted above and apply a nice clean beed of silicone (outdoor rated). Hopefully this hasn't been going on too long as this could cause some big mould issues, not to mention interior damage you are experiencing.

 

[Hpozzuoli]

It looks like the water is coming from the top and even above the the height of the window. Obviously repair the worn caulk, but look at what's over the window to be sure. It could be coming from the roof and down the header from an ice dam or similar situation caused by the winter. It just makes me think seeing the water that high on the frame. Usually the water runs and settles somewhere. Seems like it ran and settled towards the top of your window.