If the siding is tight this may be more difficult.
How to install j channel above soffit without removing siding.
Open eave installation of a vinyl soffit begins by first installing the proper receiving channels.
Simply cut slots in the nail flange area where it would be nailed to the wall.
Researching the proper steps for installing j channel.
Installing j channel around windows can be a difficult part of the installation process.
Cut a piece of flashing out of felt paper and install it at the bottom corners of the windows before you install the side j channels.
J channel can be modified to create f channel.
Insert the screw through the fascia.
Overlap the flashing onto the row of siding just below the window.
Either f channel or j channel can be used.
Now any water that runs inside the j channels will come out on top of the siding and out the weep holes designed for this purpose.
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.
Hook a zip tool into the locking or butt edge of the piece of siding above where the j channel is you are removing.
Beginning at the bottom of the foundation siding is installed by hooking a j channel onto a protruding locking edge at the top of each successive siding piece.