Wind can blow fire embers inside an attic vent, so sometimes homeowners in high-wind, dry areas choose to box in their roof eaves. Home eaves are considered heat traps so closing the space with fascia board and soffit panels helps to prevent a fire from igniting inside a home. Some counties mandate that eaves be boxed as a preventive measure against house fires. If you live in a fire zone, you can protect your home from possible flame damage by boxing the roof eaves yourself.
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Things you need
- Soffit material
- 8-penny nails
- Fascia cap
- 3/4 inch wood screws
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.
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.
Purchase soffit material according to your roof eave footage (see Resources below). Either purchase soffit panels or soffit lining made from vinyl.
Attach the soffit material to the F-channel using 8-penny nails. Slide the soffit material into the fascia grooves or J-Channel.
Apply a fascia cap to the fascia board. The cap supports the soffit and stiffens the J-channel.
Tips and warnings
- Boxed in roof eaves prevent birds from nesting.
- Install 5/8 inch drywall or stucco over the entire area under the eaves if you live in a high-wind area and need extra protection.
- Because roof eaves are high up and require using a ladder, be careful.
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