The Role of Flashing Around Windows, Doors & Roof Penetrations in Preventing Water Damage
Water intrusion is one of the most common causes of structural damage in homes. Proper installation of flashing around windows, doors, and roof penetrations is essential to protect your home from leaks, mold, and costly repairs.
What Is Flashing?
Flashing is a thin material—usually metal or specialized plastic—installed at joints and openings in your home’s exterior. Its purpose is to direct water away from vulnerable areas, preventing seepage behind siding, around windows, or through roof penetrations.
Key Areas Where Flashing Matters
1. Windows
Prevents water from entering at the top, sides, and sill.
Works with house wrap and caulking to create a complete moisture barrier.
Reduces the risk of wood rot, staining, and mold growth.
2. Doors
Protects thresholds and side jambs from rain and melting snow.
Ensures water is channeled away from the home’s interior.
Helps maintain energy efficiency by keeping insulation dry.
3. Roof Penetrations
Chimneys, skylights, vents, and plumbing stacks are common leak points.
Flashing ensures water flows over the roof surface instead of into your attic or walls.
Prevents costly damage to structural framing and insulation.
Why Proper Installation Is Crucial
Incorrectly installed flashing can trap water, creating more damage than no flashing at all.
Flashing should overlap and integrate with other water-resistant barriers for maximum protection.
Professional installation ensures all joints, seams, and transitions are watertight.
Protect Your Montana Home with Finishing Touch 406
At Finishing Touch 406, we specialize in exterior finishing that safeguards your home against water intrusion. From windows and doors to complex roof penetrations, we ensure flashing is installed correctly to preserve your home’s structure and longevity.
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