How Many Baffles Do I Need In My Attic

These specialty vents do not affect the.

How many baffles do i need in my attic. How much vent space do you have. I have fiberglass batts in the attic and will also be installing a radiant barrier under the roof. The siding fellow took out the 8 x12 soffit screen vents just left the holes when he put vinyl soffit wrap on. An attic baffle is simply an item to regulate the flow of air aka required roof venting and impede it the insulation from interfering with each other.

I m adding some insulation to my attic and i m convinced i haven t been getting enough ventilation. I had the roofer add some roof vents when he reshingled. The attic has about 9 10 inches of loose fill fiberglass giving r 25 and was not air sealed. Insulation radiant and vapor barriers baffles needed in every rafter bay.

Calculate how many rafter vents you need. The general rule is that you must have one square foot of vent space for every 150 square feet of attic area. Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof. Baffles provide a channel for air to flow through certain parts of the attic.

The book that helped us build and renovate. Attic baffles how they work. Measure the length and width of the house in feet. I want to ask a question.

My question is do i need baffles or should i just make sure there is a small gap over the soffit vents and if so should the baffles be positioned below or above the radiant barrier. Multiply those two numbers and then divide by 150 to get the vent space square footage. The remaining part. I spent a few days air sealing all penetrations and top plates in the attic and noticed we have soffit baffles in every other rafter bay.

Would it be worth while to add soffit baffles in every rafter bay before adding cellulose insulation to r 60. Call us today for a free inspection at attic insulation toronto 647 931 6385. I am getting ready to blow insulation into my attic. The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works.