Attic Ventilation

Attic Ventilation

Ventilation in attics can be an easily overlooked aspect of the home. If people knew that improper ventilation can cause roof deterioration, ice damming, mold, wood rot, expensive electric bills, and insulation damage we would take this subject much more seriously.

Why does attic ventilation matter?

Attic ventilation matters because of humidity and pressure. Let’s start with humidity. In the winter, if warm, moist air is rising from the house into the attic, humidity will get trapped in the attic. This will cause condensation and moisture related problems such as mold, wood rot, and ice damming. In the summer, when the attic heats up(135-160 degrees!) cool air can escape from the home into the attic causing the same effect: condensation. As the air in the attic escapes through the roof caps, the attic will pull air up from the soffits, and attic ceiling penetrations. The air in the home does not simply float up into the attic, but is actively being pulled. This is where pressure comes in. If air is escaping through the top of the attic, negative pressure is being created. This causes positive pressure to occur at the bottom of the attic where the soffit vents and ceiling penetrations are. Every cubic foot of air that leaves through the roof caps needs to be replaced with new air from vents and air leakage in the ceiling.

Home Shield’s 3 Rules of Attic Ventilation

Air seal the attic floor!

When the attic floor is completely and thoroughly air sealed, we can prevent moisture and conditioned air from escaping into the attic. This does not allow the attic to pull up air from the house to replace air that escapes through the roof caps. The attic will pull air through the soffit vents instead.

Have adequate soffit ventilation around the entire perimeter of the attic. More is better than less.

Ensure that properly fitted baffles are installed along the entire perimeter of the attic. Baffles ensure that the soffit vents never get clogged up. We can’t tell you how many attics we have been in that had clogged soffits due to improperly installed insulation, wildlife nests, and unfitted baffles. By installing baffles correctly, we can ensure that the attic can pull the proper amount of air from the soffits. The less the attic is able to pull from the soffit vents, the more the attic will try to pull the air from the house.

Ventilation is more important at the base of the attic than the top.

Having adequate ventilation along the perimeter of the attic floor is more important than at ridge vents or gables. Having more venting at the top of the attic will cause more air to escape, causing more air to be pulled from the living space. Having more ventilation at base from soffits allows for all air to be supplied solely from the soffits and not the living space.

Home Shield Money Protection Guarantee

For our best solutions, we guarantee that you will make all of your money back from energy and asset savings within 10 years, or we will pay the difference! We are so confident in our solutions that we will put some of the best warranties and guarantees on our services. Our guarantee comes with

Attic Encapsulation

Air Sealing and R-49 Cellulose Insulation

Attic Air Sealing

Side Attic Encap and Seal

Whole Home Air Sealing Service

Duct Encapsulation

Call you local Home Shield Insulators today to see how much we can save you!

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What Our Clients Say

From start to finish, we ensure that we provide services up to your standards so that we can leave you with a satisfied smile.

We absolutely recommend using these guys. We called thermal shield and scheduled an energy audit with them. We found out that our attic floor had not been properly air sealed when the home was built. Thermal shields crew air sealed our attic and added cellulose insulation to fix the problem. The house feels great! Couldn’t have asked for a better experience.

Daniela Villegas

Joseph and Thermal Shield were professional, on time and provided their services at an excellent value. I would highly recommend them for attic insulation services

Brian Gleason

Absolutely the best service that I’ve had in a long time. I had problems with my attic cellulose insulation and they were very responsive to my needs with my home in Gastonia. contacted several companies but none could compare with their service and pricing. I wish more companies were as professional and satisfying as this one. Don’t hesitate to call them.

Renee Smith

Fantastic company! Joseph is extremely knowledgeable and walked me through exactly what I needed to do. I definitely recommend Home Shield Insulation to anyone needing to insulate their attic!

Matthew Broussard

Ready to improve your home’s comfort and energy efficiency in Charlotte, NC? Contact Home Shield Insulation today for a free consultation! Our friendly team is here to answer any questions you may have and provide you with reliable solutions tailored to your specific needs in the Queen City.