09/02/2026
Past Project Spotlight: Sliding Patio Door Replacement & Structural Adjustment
The Issue
A residential property manager requested assistance with a severely compromised wood-frame sliding glass door. The installation exhibited multiple points of failure:
Mechanical & Security Failure: The door was off-track, difficult to operate, and no longer capable of locking properly.
Structural Deterioration: Moisture accumulation had rotted the lower wood framing, compounded by localized animal damage on both the interior and exterior faces.
Thermal Seal Failure: Condensation between the glass panes confirmed the insulated glass unit (IGU) seal had failed, severely compromising the door’s energy efficiency.
Our Solution
To replace the failing unit without triggering costly interior drywall or exterior siding repairs, we executed a tailored reframing and installation plan:
Demolition & Rough Opening Adjustment: We removed the original door and surrounding trim. Because the replacement composite door featured different outer dimensions than the original wood unit, we resized the rough opening using dimensional lumber, structural OSB, and house wrap to ensure a weather-tight tie-in with the existing building envelope.
Precision Installation & Flashing: The new composite door was set, plumbed, squared, and leveled in the opening. We secured the frame with heavy-duty exterior fasteners and sealed the perimeter using rubberized butyl flashing tape and interior expanding foam insulation to eliminate air infiltration.
Custom Trim Solution: To bridge the gap created by the smaller door frame—while avoiding full-scale siding replacement or drywall finishing—we engineered custom trim details. On the exterior, wide cellular trim integrated seamlessly with the existing siding. On the interior, we crafted and installed a custom trim cap.
The Result
The project fully restored security, smooth operation, and thermal performance to the patio entrance. By engineering custom trim solutions, we delivered an elevated interior and exterior finish while saving the property owner significant time and expense in drywall, paint, and siding remediation.