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Charlotte’s humidity, heavy rain, and seasonal temperature swings put window seals under stress year-round.
Charlotte's climate — high humidity, frequent heavy rain events, and significant temperature swings across seasons — puts window seals, flashing, and caulk under constant stress. What starts as a minor infiltration point in the fall becomes a serious moisture problem by spring if it isn't addressed.
The tricky part of window leaks is that water rarely surfaces at the point of entry. It travels — down wall cavities, along framing members, through insulation — before it shows up as a wet sill, a stain on the drywall below the window, or moisture in the wall assembly. That's why diagnosing the actual source matters before any repair is attempted.
KKC Glass has been investigating and repairing window-related water infiltration in the Charlotte area for over 29 years. We diagnose the actual entry point — not just the place where the water shows up.
Charlotte's climate — high humidity, frequent heavy rain events, and significant temperature swings across seasons — puts window seals, flashing, and caulk under constant stress. What starts as a minor infiltration point in the fall becomes a serious moisture problem by spring if it isn't addressed.
The tricky part of window leaks is that water rarely surfaces at the point of entry. It travels — down wall cavities, along framing members, through insulation — before it shows up as a wet sill, a stain on the drywall below the window, or moisture in the wall assembly. That's why diagnosing the actual source matters before any repair is attempted.
KKC Glass has been investigating and repairing window-related water infiltration in the Charlotte area for over 29 years. We diagnose the actual entry point — not just the place where the water shows up.
The most common cause of window leaks in residential properties. Caulk shrinks, cracks, and separates over time — especially at the joint between the window frame and the exterior wall cladding. Charlotte's temperature swings accelerate this.
The most common cause of window leaks in residential properties. Caulk shrinks, cracks, and separates over time — especially at the joint between the window frame and the exterior wall cladding. Charlotte's temperature swings accelerate this.
Flashing above and around windows is designed to direct water away from the window opening. When it's improperly installed, corroded, or missing, water runs directly into the wall assembly.
Flashing above and around windows is designed to direct water away from the window opening. When it's improperly installed, corroded, or missing, water runs directly into the wall assembly.
Worn or missing weatherstripping on the sash allows wind-driven rain to push past the sash and into the interior. Often misidentified as a frame leak when the actual entry point is the sash-to-frame interface.
Worn or missing weatherstripping on the sash allows wind-driven rain to push past the sash and into the interior. Often misidentified as a frame leak when the actual entry point is the sash-to-frame interface.
Wood frames that have rotted, vinyl frames that have cracked or separated at the corners, or aluminum frames with failed gaskets all create pathways for water infiltration.
Wood frames that have rotted, vinyl frames that have cracked or separated at the corners, or aluminum frames with failed gaskets all create pathways for water infiltration.
The seal between the glass and the sash can fail in older windows, creating a direct pathway for water to enter. Often confused with an insulated glass unit failure.
The seal between the glass and the sash can fail in older windows, creating a direct pathway for water to enter. Often confused with an insulated glass unit failure.
Windows that were improperly installed — without adequate shimming, flashing, or sealant — may have been leaking since day one. This is more common in older construction and renovation work.
Windows that were improperly installed — without adequate shimming, flashing, or sealant — may have been leaking since day one. This is more common in older construction and renovation work.
KKC Glass uses a systematic approach to identify the actual water entry point before any repair work begins. This includes visual inspection of the exterior and interior window assembly, assessment of the flashing condition, evaluation of the caulk and sealant joints, sash and weatherstripping inspection, and where appropriate, controlled water testing to reproduce and identify the infiltration path.
The diagnosis determines the repair. Different sources require different solutions — and applying the wrong solution at the wrong location doesn't stop the leak, it just moves where the water surfaces.
Removal of failed sealant and replacement with appropriate exterior-grade or frame-specific caulk at all window-to-wall joints.
Removal of failed sealant and replacement with appropriate exterior-grade or frame-specific caulk at all window-to-wall joints.
Replacement of worn or missing weatherstripping on the sash to restore the seal between the sash and the frame.
Replacement of worn or missing weatherstripping on the sash to restore the seal between the sash and the frame.
Repair of minor frame damage — corner separation, cracked vinyl, deteriorated glazing compound — that is creating a water pathway.
Repair of minor frame damage — corner separation, cracked vinyl, deteriorated glazing compound — that is creating a water pathway.
Re-glazing of windows where the compound has shrunk, cracked, or separated from the glass.
Re-glazing of windows where the compound has shrunk, cracked, or separated from the glass.
When the source of the leak is structural deterioration that can't be effectively repaired, sash or frame replacement is the correct long-term solution.
When the source of the leak is structural deterioration that can't be effectively repaired, sash or frame replacement is the correct long-term solution.
A small infiltration point becomes a larger one as water cycles through the wall assembly — expanding gaps, softening wood, and accelerating deterioration with each rain event. What costs a few hundred dollars to repair today can cost several thousand if the surrounding framing, drywall, or exterior cladding is allowed to deteriorate.
If you're seeing moisture around a window — on the sill, the drywall below, or the interior frame — contact us. We'll diagnose the source and give you a clear picture of what needs to happen.
KKC Glass works with property managers, general contractors, and building owners on commercial window leak investigation throughout the Charlotte area and the broader southeast. We also work alongside third-party water penetration testers to diagnose infiltration sources and provide remediation assessments for commercial properties — combining diagnostic expertise with the ability to execute the repair directly.
For commercial leak investigation inquiries, contact us directly to discuss the scope and timeline of your project.