How to Use an F-Channel for Siding

eHow may earn compensation through affiliate links in this story. Learn more about our affiliate and product review process here.

Things You'll Need

  • F channel

  • Soffit

  • Nails

  • Hammer

  • Measuring tape

  • Level

F-channel is used to hold the soffit onto your house. Soffit is the vinyl siding that makes a ceiling under an overhang. The F-channel is a thin vinyl strip that is sold where siding is sold. The upside down F creates a shelf for the soffit to slide into and rest on. The F channel can be easily confused with the J-channel that is used to cover the ends of the vinyl at the corners of the house and around windows. Just like the letters they are named for, the J has one shelf and the F channel has two.


Step 1

Purchase F-channel in the color that matches your siding.

Video of the Day

Step 2

Nail one strip of F channel to the building.

Step 3

Nail another strip of F channel directly across from and level with the first F channel strip. It will be like the two curbs on either side of a street. These two channels will be used to slide soffit pieces into place.


Step 4

Slide the soffit pieces between the two channels.

Step 5

Cover the outside of the F channel, away from the building, with fascia board when you are finished. Fascia board is the trim you use on the outside of your house.



Report an Issue

screenshot of the current page

Screenshot loading...