How To Install J Channel Around Windows And Doors

Measure the openings and cut the j channel 1 2 less than your measurement.

How to install j channel around windows and doors. Through the middle of the slots. J trim is a material used to perfect the edge on aluminum or vinyl siding on a home or small building. Install j channel under the window. Cut out a three quarter inch notch in the bottom of the side j channels and bend the tab.

The installation of j channel for snap on lineals is the same procedure as installing lineal starter strip. Around windows and doors this application works only on 1 faced j channel. Cut and position an undersill trim if necessary see when to use undersill trim. To miter window and door corners of the j channel install the bottom j channel to extend past the side casing making sure it s the width of the j face on each end.

If you want miter the bottom j channel to give it a nice mitered appearance. Position the j channel under the window. Drive roofing nails every 8 to 10 in. The vinyl siding trim pieces should slide back and forth slightly.