How To Make Attic Ventilation Baffles

You will need a baffle for each space between the rafters.

How to make attic ventilation baffles. Firmly pass the scissors handle across the tape. Baffles establish a channel for air to circulate between the insulation and the roof sheathing. How to install attic rafter vent baffles step 1. 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.

Put on your safety gear. Set the baffles and a loaded staple gun inside the attic opening and boost yourself into the attic. In a traditional cape cod house with 4 foot kneewalls there are two ways to install ventilation baffles. It may be easiest to locate and mark them from below.

Attach a headlamp to your hard hat to free up your hands as you work. 1 2 inch foil faced rigid foam insulation. When set into place and sealed with spray foam the vent baffles are insulated and air sealed. Staple the edges into place with the staple gun making sure they are lined up correctly and securely.

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. 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. Affix the insulation block to the baffle scissors and double sided carpet tape.

Rafter baffles should be installed before dry wall or insulation. The deeper the insulation the longer the baffles have to be. Fit each one snuggly in the bay with the bottom starting where the ceiling joist meets the roof rafter. Put the straight est edge of the block at the baffle fold.