Attic baffles how they work.
How many baffles do i need in my attic.
The first step in determining how many rafter vents your home needs is to determine your home s vent space in square feet.
Measure the length and width of the house in feet.
These specialty vents do not affect the.
The book that helped us build and renovate.
How much vent space do you have.
I want to ask a question.
I am getting ready to blow insulation into my attic.
Multiply those two numbers and then divide by 150 to get the vent space square footage.
I have fiberglass batts in the attic and will also be installing a radiant barrier under the roof.
Calculate how many rafter vents you need.
I had the roofer add some roof vents when he reshingled.
Baffles are also called wind baffles venting chutes rafter vents or insulation baffles.
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.
Call us today for a free inspection at attic insulation toronto 647 931 6385.
Baffles provide a channel for air to flow through certain parts of the attic.
The general rule is that you must have one square foot of vent space for every 150 square feet of attic area.
The siding fellow took out the 8 x12 soffit screen vents just left the holes when he put vinyl soffit wrap on.
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.
The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works.
The remaining part.
Insulation radiant and vapor barriers baffles needed in every rafter bay.
I m adding some insulation to my attic and i m convinced i haven t been getting enough ventilation.
Do i need the soffet insulation vent.
The attic has about 9 10 inches of loose fill fiberglass giving r 25 and was not air sealed.