Cutting J Channel Around Windows

Make the miter cut on the bottom with shears.

Cutting j channel around windows.

I didnt say i think they these type of windows are ideal yet the windows meet industry standards as well a being code compliant. Cut and install the top j channel. Check the frame of the window and clean anything that is not gonna allow for a j channel to lay flat to the side of the window. The last one i did was on a 28 wide window and i cut the nail flange at 3 4 intervals and left the front edge intact.

Lap the side over the bottom as shown. Longer than the height of the window. Notch on the top end as you did on the bottom j channel. Create the top piece by cutting a length of j molding 2 inches longer than the width of the window.

Most manufacturer advice install a moisture barrier around the exterior sheathing of the home with specific instruction on now to cut out around windows. Cut and install the side j channels. How to j channel around windows. Vinyl j channel round top windows well yes there is a way to make the ridgid j to conform to the arch.

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. Cut a 1 inch notch on either end of the piece with tin snips but do not score or snap the. As to the integral moulded j channels. Cut and install the bottom j channel.

Measure the width of the window. Place the side j channel. Cut out a three quarter inch notch in the bottom of the side j channels and bend the tab. Start j channeling the window from the bottom make cuts on both ends of the j channel.

How do you install j channel around windows. Drive roofing nails every 8 to 10 in. Cut the side j channel 2 in. When complete the j trim neatly finishes off the siding covering any cut raw or sharp edges to prevent damage from water penetration.

Simply cut the nail flange at intervals that will lend itself to the radious. If you want miter the bottom j channel to give it a nice mitered appearance.