03/09/2026
GHOST ROOF LEAKS and ICE DAMMING
Proper roof ventilation is the "lungs" of a home. Without it, a house cannot breathe, leading to a chain reaction of structural issues. For this recent project at QS Roofing, the previous contractor’s failure to install vents created a trapped environment that directly compromised the roof’s integrity.
Why Ventilation is Essential
Roof ventilation works on the principle of continuous airflow—pulling cool air in through the soffits (intake) and pushing hot, moist air out through the top (exhaust). This process is critical for two main reasons:
1. Moisture Control
In any home, daily activities like showering, cooking, and laundry release moisture into the air. This warm v***r rises into the attic. If there are no vents, this moisture becomes trapped against the cold underside of the roof deck.
The Result: The v***r condenses into water droplets, leading to "attic rain." This causes wood rot in the rafters, ruins insulation, and fosters mold growth.
The QS Project Fix: By opening up the deck and installing a ridge vent, we created a high-point exit for this trapped moisture, ensuring the attic stays dry year-round.
2. Temperature Regulation
During the summer, attic temperatures can soar above 65°C (150°F) without proper airflow. This intense heat "cooks" the shingles from the inside out, causing them to brittle and fail prematurely. In the winter, a lack of ventilation leads to ice damming. Heat escaping from the house melts snow on the roof; that water then runs down to the cold eaves and freezes, backing up under the shingles and causing leaks.
The QS Roofing Solution: Ridge Vent Installation
In the case of this specific client, the total lack of venting had already led to active leaks and visible moisture buildup. A ridge vent was the most effective solution for this structure because it provides a uniform, aesthetic, and highly efficient exhaust path along the entire peak of the roof.
Key Steps Taken:
Opening the Deck: We cut a precise gap in the roof sheathing at the peak to allow air to escape from the attic.
Ridge Vent Integration: The vent was installed over the gap, then capped with matching shingles to maintain a seamless look.
Restoring Airflow: This setup works with the existing intake to ensure that the air in the attic is constantly being replaced, preventing the stagnant conditions that caused the previous failures.
By correcting the original builder's oversight, this roof is now protected against the premature rot and "ghost leaks" caused by condensation.
