How to Box Frame Roof Eaves
- 1). Secure an F-channel with 3/4 inch wood screws against the wall, all the way around the house under the eaves. This is a fastener shaped like the letter F that the soffit material slips into.
- 2). Make sure the inside of your fascias attached to the rafter tails have grooves on the inside where the soffit material will rest. Alternately, you can attach J-channels with 3/4 inch wood screws, which provide a slot to insert the soffit material in.
- 3). Purchase soffit material according to your roof eave footage (see Resources below). Either purchase soffit panels or soffit lining made from vinyl.
- 4). Attach the soffit material to the F-channel using 8-penny nails. Slide the soffit material into the fascia grooves or J-Channel.
- 5). Apply a fascia cap to the fascia board. The cap supports the soffit and stiffens the J-channel.
