Installing Vinyl J Channel Around Windows

Cut a tab in the bottom of the side j channels and fold under.

Installing vinyl j channel around windows.

The next step in waterproofing your window is to install the j channel. Drive roofing nails every 8 to 10 in. J channel pieces should be installed similarly to the f channel across from each other so the soffit fits between the lengths of the j channel. Next measure and cut the siding to fit the measurements of your soffit and push each panel into the j channel.

Nail loosely enough so that the j molding slides. Nail it to the wall but remember not to nail it tightly. Install j channel under the window. Cut and position an undersill trim if necessary see when to use undersill trim.

Cut and install top j flush with the outer face of the side j s. Cut and bend drain tab. Install side j channels flush with the lower face of the bottom j channel and with the top of the window casing. Install the j molding along the bottom edge of the window.

For the window first position the j channel against the window casing. To install vinyl siding to the soffit and fascia area on your home nail lengths of j channel along the inner edge of the fascia leaving the nail heads out about 1 32 to 1 16 of an inch. Do not forget to extend the side j channel above the top of the window frame make it at least 1 inch above the top of the window. Square corner j channel installation.

It will look much better if you miter the corners. This goes all around the window and you ll need new strips. You can use roofing nails that are made of galvanized aluminum or stainless steel with high user ratings and good resistance to corrosion. Place the side j channel and mark it then mark the bottom j channel.

Hammer in roofing nails approximately every 8 inches at the middle of the nailing slots. Cut and install bottom j flush with the sides of the window casing. Mitering corners of the j channel. This gives it a clean professional look.

Install the j channel vinyl siding around all four sides of a window or three sides of a door. You work from the bottom up with this step as well overlapping top to bottom. Position the j channel under the window. The vinyl siding trim pieces should slide back and forth slightly.