If there s too little foam used there will be air channels between the window and the wall.
Roof window leaking.
Make sure the sill at the bottom of the window frame is pitched.
Many homeowners see water stains near the windows and automatically assume that the glass itself must be leaking.
The rubber gasket that surrounds the vent pipe could be rotted.
The most common way of sealing windows today is with the use of expanding foam.
Unfortunately stains on the top of the window frame are more likely to indicate a leak within the walls of your home.
These air channels will eventually cause water to come down through.
The leak is an area about 4 long about 2 feet from one of the edges of the window and the sill above the window shows a wet spot which is wider near the window tapering to a smaller point towards the inside of the sill where it meets the interior wall.
Check the gasket between the window frame and the glass.
You can try some simple maintenance work such as.
Sometimes leaking water is finding its way into your through your window sills or frame but is actually coming from your roof.
The soffit that meets the roof is one of the toughest areas to waterproof.
Use this material accurately to avoid window leaking.
Missing shingles or a failing roof system might be your culprit.
Have a roofing expert conduct an inspection of your roof system.
If your window is leaking around the top of the frame you may not actually be experiencing a window leak at all.
This roof leaks during the snowy part of winter and during storms in the summer certainly due to poor flashing.
In the photo you can still see signs of an ice dam.
Window leaks flexible sealant apply flexible sealant to cracks or holes in the brick mortar or home siding shingles replace missing shingles or damaged shingles if caused by a roof leak vents flashing examine vents or flashing higher up on the roof for gaps cracks damage.
Remove damaged exterior caulking clean the window frame and recaulk.
Check plumbing vent boots and roof vents if water is entering from that area to cause the leaking roof.
Look for cracks in the base of flexible rubber flashing or broken seams in metal varieties of vent pipe flashing.