If the house wrap isn’t correctly installed, that could cause the window to leak, too. The flashing might be improperly installed, for instance, or it might be missing altogether. Leaks at the top of the window can be a sign of mistakes made during installation.

The window is leaking at, or near, the top.

The fix for this situation is simple – peel out the old caulking and replace it with new window caulking. Often, these leaks happen because the caulk or sealant around the window has gotten old and cracked, allowing rain to enter the house. The leaks could be anywhere around the window – top, sides or bottom. In order to do this, find the main source of the leak:

Let’s explore some of the main reasons that windows leak and what you can do about them. There are many factors to consider when analyzing the cause of a window leak, so before repair can take place, a diagnosis is necessary. Window leaks aren’t uncommon, especially in older buildings.

HVAC & Dehumidification / Indoor Air Qualityĥ Reasons Your Windows Are Leaking (And How to Fix Them).

Windowtop crack