Water Leaking From Roof Through Window

Sometimes leaking water is finding its way into your through your window sills or frame but is actually coming from your roof.

Water leaking from roof through window.

The most common way of sealing windows today is with the use of expanding foam. The culprit is often old or poorly done window sealant. Have a roofing expert conduct an inspection of your roof system. In this case it means that the water is entering your home through an opening in the wall.

The leak can also happen at the frame of the window itself. 7 rarely a leak at an overlying window or vent or a roof leak or a leaking overhead water or hydronic steam heating pipe getting into the wall and running down into the wall till it hits the underlying window running down around the frame and leaking out at the the bottom sill. Use this material accurately to avoid window leaking. Dormer walls provide lots of spots where water can dribble down and enter the roof.

Often wind driven rain comes in from above the roof especially around windows between corner boards and siding and through cracks and knotholes in siding. Often the water will follow an unusual path along ceiling joists or wall studs until it reaches a window frame where it can then drip inside. If you notice water stains on the wall above the window or along the top or bottom of the frame this usually means there is a leak inside the walls. If none there then that leaves you with the dormer roof and flashing the window itself or siding above the window which are more likely unless you have a flat topped dormer.

Begin soaking low on the roof just above where the leak is visible inside the house. Run water over the low side of the penetration for several minutes while the helper watches for any water droplets. These air channels will eventually cause water to come down through. The water will leak along the window and will pool either at the bottom or top part.

If a main roof or flashing leak running down and exiting at the window you should see water running down the underside of the sheathing and staining. Use enough water to mimic heavy rains. In this case you have a problematic window. Roof and or wall leaks window leaks can result from a structural failing elsewhere in the home such as an opening in the roof upper floors or siding.

Leaks can also occur when rainwater enters through the roof chimney or loose fitting siding. If there s too little foam used there will be air channels between the window and the wall. The water oozes into your house from every angle and crevice around the window from top to bottom.