Window Water Leaks
How to Find and Resolve a Leaky Window
Problem
By Mark J. Donovan
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Window water leaks can occur for a number of reasons. A leaky window also
means air leaks, which will inevitably cost you more money on your home energy
expenses. Windows without overhangs over them are more susceptible to water
problems. Every window installation should include ice and water shield around
the window frame opening and over the nailing flanges to prevent moisture
penetration. Non-corrosive nails should also be used when installing windows.
One of the first things you should check when you observe a window water leak is
the Z-strip flashing installed over the top of the window on the outside of the
home.
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The flashing should be tucked up
underneath the siding just above the window and fold over the top edge of the
window. If the window was installed by a fly-by-night contractor it could be
missing. Also, if the siding was nailed to the sheathing directly over the
window its possible there is a nail hole in the flashing and water could be
wicking its way in.
Also check to make sure that the exterior of the window frame has been properly
caulked. Make sure the caulk has not dried out or shrunk. If there are gaps in
the caulk between the house siding and the window frame, water could be working
its way into the home.
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Next check the gasket or sealant
between the window sash and the window frame itself. If it is permanently
compressed or damaged in any way replace it. Alternatively you can try applying
a small amount of silicone caulk around the damaged gasket areas. If the window
panes themselves have glazing to hold them in place, make sure the glazing is
not old and cracked. If it is replace the old glazing.
Check the window sill itself
for damage or rot. If it is a wood window sill inspect it for checking and
splitting. Ultraviolet light and moisture can wreak havoc on wood window sills. |
When this type of situation occurs
water can penetrate into the window sill and down in between the wall. This type
of problem will inevitably lead to rot and mold issues.
If these types of solutions do not
solve your leaky window problems then you may have no choice but to remove the
window and reinstall it properly. Proper window installation should include the
use of ice and water shield around the window frame opening, the use of
non-corrosive nails or fasteners, Z-strip flashing and an exterior grade caulk.
For information on
Installing a New Window, see the
Installing a New Window Ebook from
HomeAdditionPlus.com. The Installing a New Window Ebook provides easy to
understand, step-by-step instructions, on how to remove an old window and
install a new one. Pictures are included for every key step in the process.
Related Information
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