FAQ

Common signs include ice dams forming along the roofline in winter, shingles that are aging or blistering faster than expected, excessive heat in the upper floors of the home during summer, moisture staining or mold growth on the underside of the roof deck, and higher than expected energy costs during both heating and cooling seasons.

Heat that builds up in an under-ventilated attic raises the temperature of the roof deck and the shingles above it. This accelerates the drying and cracking of shingle oils, speeds up granule loss, and can cause blistering on the shingle surface. In severe cases, it can void manufacturer warranties. Proper ventilation keeps the deck temperature within a range that allows shingles to perform as intended for their full rated life.

Soffit vents are installed along the underside of the roof overhang and allow cool outside air to enter the attic at the lowest point. Ridge vents run along the peak of the roof and allow hot air to escape at the highest point. Together they create a continuous flow of air from bottom to top that keeps the attic at a consistent temperature and prevents moisture buildup. Both are required for a properly balanced ventilation system.

A professional attic assessment is the most reliable way to determine ventilation performance. We evaluate airflow, insulation levels, the condition of existing vents, and signs of moisture damage during every free roof inspection. General guidelines require one square foot of net free ventilation area for every 150 square feet of attic floor space, balanced equally between intake and exhaust.

Yes. Ice dams are directly linked to heat escaping through an improperly ventilated attic. When warm attic air raises the temperature of the roof deck, it melts snow that then flows down to the cold eave area and refreezes. The resulting ice dam forces meltwater back under shingles and into the home’s structure. Correcting attic insulation and ventilation is one of the most effective ways to prevent ice dam formation.

In summer, a poorly ventilated attic can reach extreme temperatures that force your air conditioning system to work significantly harder to cool the living spaces below. In winter, heat loss through an under-insulated attic raises heating costs and contributes to ice dam risk. Proper ventilation and insulation reduce the thermal load on your HVAC system and can meaningfully lower energy costs in both seasons.

The standard requirement is one square foot of net free vent area for every 150 square feet of attic floor space when intake and exhaust are balanced. When intake and exhaust are not balanced, the requirement increases. Local building codes may specify additional requirements. We assess your current ventilation against these standards during the free inspection and document any deficiencies in the written estimate.

Yes. Attic ventilation is a standard part of every free inspection we perform. Because ventilation directly affects roof performance and longevity, we evaluate current airflow, insulation levels, and the condition of existing vents alongside the roofing system itself. Any ventilation deficiencies are documented in the written estimate and addressed as part of the overall roofing scope when improvements are needed.

Yes. Additional ridge venting, soffit venting, or powered ventilation can be added to most existing roofing systems. The specific solution depends on the current configuration of your attic and roof. We assess the existing setup during the inspection and recommend the most effective improvement for your specific situation.

Over-ventilation is less common than under-ventilation but can occur when exhaust venting significantly exceeds intake capacity. This can create negative pressure that draws conditioned air out of the living space and into the attic, increasing energy costs. It can also pull moisture-laden air into the attic in certain conditions. A balanced ventilation system with equal intake and exhaust is always the goal.

Yes. Most manufacturer roofing warranties, including the Atlas Pro+ warranty, require that the roofing system be installed over a properly ventilated attic. Inadequate ventilation can void or reduce manufacturer warranty coverage. We assess ventilation during every inspection and ensure that any new installation meets the ventilation standards required to maintain full warranty coverage.