leaky window mystery
I discovered last night a leak in a casement window in our home. The carpet was wet under the window, but the window itself on the inside, as well as the wall, were dry.
I opened the casement window this morning and noticed the mechanism that moves the window is VERY rusted, and obviously water is getting in as the box encasing the swing arm still had water in it from the day before. These are aluminum clad exterior casements with wood inside and the box holding the swing arm is also wood.
I assume water enters through a faulty seal on the outside, leaks inside the swing arm box and then through a crack maybe in the wood, down the inside of the wall and onto the floor. The carpet and padding then soak up the water. I doubt there is a pan sill or proper flashing else this wouldn't occur.
I'm also not sure how to fix this, save loading the inside of the casement mechanism box with caulk.
I plan to call a window guy out but was wondering if anyone had any suggestions.