Fit each one snuggly in the bay with the bottom starting where the ceiling joist meets the roof rafter.
Best way to baffle air in attic.
Fasten blocking around the hatch or door to allow the material to be installed around this area without escaping.
Install air chutes in each rafter space to keep the air path clear between the rafters and the roof sheathing.
Pull any existing insulation away from the edges of the attic where you will be putting up the baffles.
Coat your arms face and neck with talcum powder to reduce the itching from insulation staple the chutes in place.
Make sure the fill s depth is uniform across the attic.
The preferred way is for the baffles to begin above the ventilated soffit and extend all the way to the small attic above the second floor ceiling.
The deeper the insulation the longer the baffles have to be.
The faster the wind moves over the baffle the greater the pressure it creates.
Wind can blow up through soffit vents disturbing insulation and moving it out of place.
Be sure to wear long sleeves goggles and a dust mask.
Proper air circulation in the attic is all about preventing moisture buildup.
Some of this water vapor rises into the attic.
It s best to separate the.
Rafter baffles are sheets of plastic foam or cardboard that fit between the rafters in your attic to prevent moisture accumulation and add insulation to your home.
In the summertime the outdoor air temperature as well as the air inside the attic is warmer than it is in the winter and warmer air can hold more moisture than cold air can.
You will need a baffle for each space between the rafters.
The main function of an attic baffle is to draw the air in from outside your home and allowing it to circulate around your attic.
In a traditional cape cod house with 4 foot kneewalls there are two ways to install ventilation baffles.
Rafter baffles should be installed before dry wall or insulation.
You can situate the baffles where the circulation is mainly required.
During the summer soffit.
If you are finishing the entire attic space place the baffle directly adjacent to the soffit vent so air vents directly into the tray of the baffle and is captured against its bottom.
How important is using baffles in attic insulation.
Baffles should fit snugly between your rafters and extend from just over the vent at the wall plate up the rafter.
Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.