J-channel is a piece designed to fit over siding and soffit pieces. It is a corner or end piece that resembles the letter J. It mounts the siding to the wall and helps hold the soffit in place. J-channel comes in 12-foot sections and is either 1/2 inch thick or 5/8 inches thick. It can install on any type of house including wood or masonry. J-channel is an essential element in the installation process of siding and is one of the final steps in the entire procedure.
Things You'll Need
- Tape measure
- 2-inch screw
- Tin snips
- Black marker
Measure the gable of the roof with a tape measure. Climb up a ladder and measure directly under the soffit where the J-channel will install. Record the measurement and total how many 12-foot pieces of J-channel will be needed for installation.
Line up the J-channel next to the soffit under the eave of the roof. Slide the first piece of J-channel over the soffit. Push the soffit into the lip on the J-channel.
Drill in a 2-inch screw through the first hole at the top of the J-channel. Insert the screw through the fascia. Move down 12 inches and insert another screw through the hole at the top of the J-channel. Continue down the first piece and insert a screw every 12 inches.
Slide the lip of the next piece of J-channel over the soffit and overlap the J-channel over the first piece by 4 inches. Install the second piece of J-channel just as the first was installed. Continue around the soffit in the same manner until reaching the end of the house.
Cut the last piece of J-channel to size with tin snips. Measure and mark the cut line with a black marker and cut directly over the line with the tin snips. Install the final piece just as the rest of the pieces were installed.