Spray Foam Insulation for Attic Rooflines

As a local homeowner, are your energy bills out of control? As a local builder, do you want to improve the energy efficiency of your building project? Spray foam insulation for your attic roofline is a smart solution. Spray foam is the only product that insulates and air seals in one easy step. This liquid foam is sprayed along your attic roofline where it expands and hardens to create an airtight seal.

Our experienced team at Delmarva Spray Foam is here to help you create a more energy-efficient home or building with expert spray foam installation. We take the time to ensure the job is done right so you or future owners have a comfortable home or building to enjoy.

Cornell custom home

Benefits of Spray Foam for your Attic Roofline

Adding insulation to your home or building is always a good investment. By adding spray foam to your attic roofline, you can expect many benefits:

Improved Energy Efficiency

Create a continuous thermal air barrier that reduces heat loss in winter and heat gain in summer, leading to lower energy bills and less stress on your HVAC system.

Reduced Air Leaks

Spray foam seals air leaks to prevent drafts and allergens from getting in your attic.

Create a Sealed, Unvented Attic

Sealing and insulating the roofline eliminates the need for traditional ventilation. This means you’ll enjoy a conditioned or heated attic throughout every season.

Improved Comfort

Spray foam balances your attic’s temperatures, making your living space below more comfortable.

Added Moisture Barrier

Closed cell spray foam provides a moisture barrier that will help prevent condensation and mold growth.

Long-Term Savings

Up-front costs are higher than with other insulations, but your energy savings quickly add up for a strong return on investment.

Extended Roof Life

By moderating temperature swings and moisture, spray foam can reduce wear on your roofing materials.

Extra Storage Space

Insulating the roofline instead of the attic floor not only creates a conditioned area but opens more space up for storage or a finished attic.

Best Buildings for Spray Foam Along the Attic Roofline

Many homes and buildings can benefit from the application of spray foam to their attic roofline, especially:

  • Homes with their HVAC system in the attic.
  • Custom or newly constructed homes.
  • Homes undergoing major energy upgrades.
  • Commercial buildings with sloped roof structures and conditioned attic spaces.
  • Homes that want to create an exterior thermal envelope.
Attic Roofline

Which Type of Spray Foam is Best for My Attic Roofline?

Attic Roofline

There are two types of spray foam commonly used in homes and buildings: open-cell and closed-cell. Both types are effective for your Delaware home but come with specific advantages.

  • Open-cell spray foam

    • More affordable
    • Expands more, filling small cracks and gaps easily
    • More vapor permeable (may require a vapor barrier)
    • Ideal for interior applications in moderate climates
  • Closed-cell spray foam 

    • Higher R-value per inch (R-7.2)
    • Creates both an air and vapor barrier
    • Adds structural strength to your roof deck
    • Better for extreme temperatures, moisture-prone areas, and thinner cavity spaces

Here in Delaware with our hot, humid summers and cold winters, closed-cell spray foam is often the best choice for attic rooflines. This is thanks to its higher thermal resistance and moisture control. It’s especially beneficial for older homes or buildings near the coast where humidity is a concern.

Maximize Energy Efficiency with Delmarva Spray Foam

At Delmarva Spray Foam we focus on maximizing your home or building’s energy efficiency with tailored insulation solutions. Homeowners and builders across Delaware and the Delmarva Peninsula have counted on us since 2002 for quality installation and outstanding service. We continue to shine as our community’s most trusted spray foam insulation company. Contact us today to learn more about the benefits of spray foam for your attic roofline and to schedule your free estimate.