Inspect the area above the leak including both indoors and out.
Fixing siding leaks.
Check to be sure weep holes are open along bottom of window openings.
Siding leak causes find the cause of leaky building siding the article lists the causes of leaks into building walls and provides links to in depth diagnostic and repair articles for each of them.
This article describes the causes of all types of leaks in building siding and wall coverings.
Water can penetrate through cracks.
Repairing leaky wood siding.
Step 1 examining your home s exterior structure is the first step toward finding your leaky siding area.
Siding leak diagnosis and repair.
Start by looking in the area where you ve spotted the stain.
Depending on the type of siding you have wood or vinyl you will have to take a specific approach in fixing the problem.