The side edges of the vent should lie flat against the underside of the roof sheathing.
How to install attic vent baffles.
How to install attic rafter vent baffles step 1.
Blown insulation may require an additional block to prevent insulation from being blown into the soffit.
Baffles establish a channel for air to circulate between the insulation and the roof sheathing.
Depending on the size of the opening set a half sheet of 3 4 inch plywood across the rafters to.
Put on your safety gear.
The outside edge of the baffle should be parallel to the exterior wall sheathing.
Pull any existing insulation away from the edges of the attic where you will be putting up the baffles.
Step 2 bend the vent down at its accordion hinge so its lower end points down toward the wall s top plate.
It may be easiest to locate and mark them from below.
Fit each one snuggly in the bay with the bottom starting where the ceiling joist meets the roof rafter.
Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor.
You ll need to crawl to the end of the eave and staple the baffle against the roof deck.
Once they are in place you can then place the batts or blankets or blow insulation right out to the very edge of the attic floor.
Install attic baffles if the attic doesn t have attic baffles let s install them.
Staple each side to the roof deck spaced about every 4 inches.
Center a raft r mate between two rafters in your attic.
Attach a headlamp to your hard hat to free up your hands as you work.
Attach this roof and attic insulation treatment using foam baffles to ventilate insulate and channel cold and hot air to roof vents before insulation is add.
You will need a baffle for each space between the rafters.
Measure the distance between your rafters and purchase enough rafter vent baffles to install one over each.
Locate the soffit vents in the eaves of your home.
A piece of rigid foam board placed on the outer edge of the top plate works very well for this.