Window and Door Leaks

Identifying the cause is the first thing that needs to be done, by the process of elimination.

When it comes to window leaks, identifying the issue is your first and most important issue, then a timely repair is crucial to prevent further damage to your property.

At HIVIZ GLASS, we understand the urgency of addressing this issue and offer expedited glass replacement services to ensure rapid turnaround times for all your broken windows which may be the cause of a particular leak.

Identifying Window Leaks and an explanation of why

Window leaks can manifest in various ways, such as water seepage, condensation between panes, or visible cracks.   Here are the primary reasons windows can leak in such scenarios:
 *Improper Flashing Installation:
 * Missing or Incorrectly Applied Flashing: Flashing is a crucial waterproof material installed around the window frame to direct water away from the opening. If it's missing, torn, improperly overlapped, or not shingled correctly with the house wrap/siding, water will inevitably find its way behind the window and into the wall.
 * Wrong Material Used for Flashing: Sometimes, installers might use house wrap or building paper instead of proper window flashing, which isn't designed to provide the same level of water resistance.
 * Caulking Used as a Substitute for Flashing: Caulking is a secondary seal and should never be relied upon as the primary water barrier. If flashing is inadequate, no amount of caulk will prevent leaks in the long run.
 * Inadequate or Improper Caulking/Sealant Application:
 * Insufficient Caulk: Not enough sealant used around the window frame where it meets the wall.
 * Incorrect Caulk Type: Using the wrong type of caulk for the application (e.g., one that isn't flexible enough for expansion/contraction, or isn't designed for exterior use).
 * Poor Application Technique: Caulk that isn't applied smoothly, has gaps, or isn't properly adhered to both surfaces.
 * Bottom of Window Caulked Shut: This is a common mistake. The bottom of the window (sill) should ideally have a "weep hole" or be designed to allow any water that gets into the sill to drain out. If the bottom is completely sealed, water can get trapped and eventually back up into the house.
 * Incorrect Window Sizing and Fit:
 * Window Too Small for Rough Opening: If the window is too small for the framed opening, it creates excessive gaps that are difficult to seal effectively, even with expanding foam or caulk.
 * Improper Shimming/Leveling: If the window isn't installed perfectly level and plumb, it can create uneven gaps or stress points in the frame, leading to cracks or compromises in the seal over time.
 * Issues with the Window Frame Itself (Pre-existing or Installation-Induced):
  * Damaged or Warped Frame: If the window frame itself was damaged during shipping, handling, or the installation process, it can create pathways for water. Warped frames, even if subtle, can prevent a tight seal.
 * Poorly Joined Frame Components: In some cases, the corners or joints of the window frame might not be properly sealed or manufactured, allowing water to penetrate.
 Lack of Proper Drainage:
 * Blocked Weep Holes: Many window frames have small drainage holes (weep holes) at the bottom to allow condensation or minor water ingress to escape. If these are blocked by debris, sealant, or improper installation, water will accumulate and can eventually leak inside.
 * Sill Pan Issues: A sill pan (a waterproof barrier under the window) is crucial for directing water outwards. If it's missing, improperly installed, or doesn't have the correct slope, water can pool and infiltrate.
 * Negative Sill Slope: The window sill should always have a slight downward slope to the exterior to encourage water runoff. If it's level or slopes slightly inwards, water will sit or be directed into the house.
 * Problems with House Wrap/Building Paper:
 * Incorrectly Overlapped House Wrap: The house wrap (a moisture barrier around the exterior walls) needs to be installed with proper overlaps, especially around window openings, to ensure water drains downwards. If it's shingled incorrectly, water can get behind it and direct it towards the window opening.

 * Structural Issues (leading to window leaks over time):
 * Building Settlement/Foundation Shifts: Even slight shifts in a home's foundation can cause the window frames to misalign, creating gaps or cracking existing seals that were initially sound.

 * Rotting or Damaged Framing: If the rough opening framing was already compromised by rot or previous water damage before the new window was installed, it can affect the window's ability to be properly seated and sealed.
These reasons highlight that even if the visible rubber seals on the glass appear fine, a leak can stem from a deeper issue related to how the window was integrated into the building's envelope during its initial installation.