Unvented Attics

Your Attic: The Secret to a More Comfortable, Efficient Home!

Did you know your attic plays a huge role in your home's comfort, energy bills, and even its health? Traditional attics are often vented, exposing your home's top floor and even your heating/cooling system to extreme outdoor temperatures and moisture.

Exterior View of a commercial poultry barn

Introducing the Unvented Attic: The Smart Upgrade for Your Home

An unvented attic (also called a "sealed" or "conditioned" attic) brings your attic space inside your home's insulated, controlled environment. By moving the insulation and air barrier to the underside of your roof, we create a continuous, protective shield.

Why an Unvented Attic is Better for you:

Lower Energy Bills:

Say goodbye to extreme attic temperatures! This means your heating and cooling systems work less, saving you money every month. Ducts located in a sealed attic also lose less energy.

More Comfort:

No more hot spots in summer or cold spots in winter. Your home will feel consistently comfortable from top to bottom.

Improved Indoor Air Quality:

By sealing out outside air, you reduce the entry of dust, allergens, and pollutants, leading to a cleaner, healthier indoor environment.

Protects Your HVAC System:

Your furnace and AC unit, if located in the attic, will last longer and run more efficiently when protected from harsh attic temperatures.

Superior Moisture Control:

An unvented attic helps prevent humid outdoor air from entering and causing condensation or moisture issues in your roof structure.

Increased Durability:

A sealed attic can help protect your home's structure from wind, rain, and even wildfire embers.

Small gaps around pipes, wiring, and outlets create pathways for outside air—and all the allergens it carries—to enter your home.

Facts About Unvented Attics

✅ Modern building science shows that properly designed and executed unvented attics can actually offer superior moisture control, especially in humid climates.

✅ Because the unvented attic is brought inside the conditioned or semi-conditioned envelope, it's no longer exposed to harsh exterior conditions bringing the attic temperatures significantly closer to the indoor living space temperature, eliminating the extreme heat buildup common in vented attics.

✅ Modern building codes explicitly permit unvented attics, provided specific requirements are met. These typically include the use of air-impermeable insulation (like spray foam) applied directly to the underside of the roof deck.

✅ When installed correctly and according to code, spray foam insulation is a safe and highly effective material for unvented attics. Fire safety requirements must always be met, which typically involves specific ignition or thermal barriers depending on the foam type and application.