![]() ![]() Clean out the holes with a wire coat hanger or something similar. These holes are designed to allow the water to escape the frame, but they can become clogged. If the windows have metal or vinyl frames, they have drain holes near the bottom edge of the frame. The fix for one is easy, the other is not. There are a couple of reasons why windows leak at the bottom. You might want to add head flashing as well, depending on how much weather the window is exposed to. Once the window is installed, put flashing tape over the nailing fin, then fold the wrap down over it, completing the shingling process. If the lower band overlaps the upper band of house wrap, water will run down to that seam, then into the seam and behind the wrap to the wood framing, where you don’t want water to go.Īt the top of the window, the house wrap should be folded up onto the exterior of the house and taped up before the window is installed. Water will run down and over the seam that way. To do that, the product has to be shingled, with the wrap that’s installed higher on the house overlapping the lower band. The purpose of house wrap is to keep any water that gets behind the siding moving down and out. You may have to remove the siding to check the house wrap and flashing tape around and above the window. The remedy for this one is much more complicated than adding caulk. 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). ![]()
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