Drain Holes In Window Frames

The exterior weep holes that drain the water out of the window are not aligned with the interior weep holes.

Drain holes in window frames.

In other designs the outside weep holes for water drainage do not align with inside weep holes blocking wind from entering. Even though these drainage holes subtract from energy savings not having them will eventually cause the primary window frame to rot and possibly make them impossible to operate. Weep holes in vinyl windows are designed to keep both water and wind out. If you have metal or vinyl frame windows check the drain holes at the outside edge of the bottom portion of the window frame.

During rains water can fill the bottom track leak to the inside of the home and flood the area surrounding the window. Found at the bottom of storm window frames these little holes must be kept clear to function properly. Drain or weep holes allow water to escape from the frame preventing flooding. Exterior mounted storm windows must have weep holes at the bottom of the frame to allow any moisture that collects between the primary window and the storm window to drain out.

Weep holes on sliders can be seen in the sill track. If the weep holes clog for a long period of time. Thus they block direct air flow into the window. Most sliders have weep holes as do most double hung replacement windows.

Windows and patio doors are designed with a weep drainage system on the exterior bottom of the frames to help protect the inside of your home. Manufacturers install small flaps covering the weep holes which open out to let water exit and close so wind can t come through the window. If there are no drain holes in frame then the frame is sealed and water should not in therory get inside.