A new roof can lower your energy bills through proper ventilation, material selection, and quality installation. The tax credit was a bonus — the real savings come from how your roof performs year-round.
A new roof can lower your energy bills through proper ventilation, material selection, and quality installation. The tax credit was a bonus — the real savings come from how your roof performs year-round.
Proper roof ventilation allows warm air to shift out and be replaced with cooler air continuously. This keeps attic temperatures regulated, reduces condensation that can lead to mold, and keeps your insulation performing well.
How a New Roof Lowers Energy Bills
- Ventilation is the foundation: Good attic ventilation regulates temperature year-round. It reduces condensation that can result in mold and keeps your insulation in good condition — protecting both your energy bill and your home’s structure.
- Cobra Ridge Vent and MasterFlow work together: GAF’s roofing system uses Cobra Ridge Vent at the ridge for exhaust and MasterFlow Intake Soffit Vents at the soffits for intake. This balanced airflow system actively reduces energy loss through the attic.
- Metal roofs offer energy advantages: Metal roofs can save significant energy compared to asphalt through their reflective properties and reduced heat absorption. That difference shows up on your cooling bills every summer.
- Ice and water shield protects your investment: Coastal Windows & Exteriors installs 6 feet of ice and water shield as part of every roof installation. This protects homes from the freeze-thaw cycles that drive up energy bills and repair costs.
- An aging roof works against you: A roof more than 20 years old with damage or recurring issues may be letting conditioned air escape. Replacing it restores your home’s thermal envelope and stops that energy loss.
- The ROI is real: Roofing delivers a 68% return on investment nationally. A new asphalt roof averages $35,000 while a metal roof averages $56,000, either option improves energy performance and long-term home value.
Comparing Roof Types for Energy Performance
- Top Recommendation: A properly ventilated asphalt roof system with Cobra Ridge Vent and MasterFlow for most homeowners. It delivers meaningful energy savings at a lower upfront cost. Contact Coastal Windows & Exteriors for an estimate on energy efficient roofing!
- Best for Maximum Energy Performance: Metal roofing for homeowners planning a long-term stay. Reflective properties reduce heat absorption and deliver significant energy savings compared to asphalt.
- Best for Protection: Work with a GAF Master Elite contractor who installs 6 feet of ice and water shield. That standard protects against the freeze-thaw damage that drives up both repair and energy costs.
Request a free roofing estimate from Coastal Windows & Exteriors.
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Still have questions about whether a new roof can help lower your energy bills even without a tax credit? See the areas we serve and talk to your local roofing contractor.
Last Updated: July 2026
Sources:
- Proper roof ventilation regulates attic temperature year-round, reducing condensation that can lead to mold and keeping insulation performing well. GAF Best Roofing Materials and Colors for Energy Efficiency GAF’s guidance on how roofing materials and ventilation choices impact home energy performance. (2024)
- Metal roofs can deliver meaningful energy savings compared to asphalt shingles through their reflective properties and reduced heat absorption. Oak Ridge National Laboratory Metal Roof Energy Study Research from Oak Ridge National Laboratory on the comparative energy performance of metal roofing versus asphalt. (2013)
- Homeowners should inspect their roof at least twice a year, in the spring and fall, and consult a roofing professional if their roof is more than 20 years old or has extensive damage or recurring issues. GAF Residential Roofing FAQsGAF’s official guidance on roof inspection frequency, maintenance schedules, and when replacement may be necessary. (2025)
- Cobra Ridge Vent is installed at the ridge for exhaust, and MasterFlow Intake Soffit Vents are installed at the soffits for intake to create a balanced ventilation system that reduces ice dam formation. GAF Ice Dams: Cause and Preventative Measures GAF’s technical bulletin on the causes of ice dams and how proper ventilation and leak barriers help prevent them. (2025)
- The average cost to replace an asphalt roof in New England is $35,701, while a metal roof averages $56,282; asphalt roofing carries a 68% ROI and metal roofing carries a 50% ROI nationally. JLC Online Cost vs. Value 2025 — New England Remodeling magazine’s regional cost-versus-value data for roofing projects in New England. (2026)
