Installing Vinyl J Channel Around Windows

Mitering corners of the j channel.

Installing vinyl j channel around windows.

Cut and install bottom j flush with the sides of the window casing. Position the j channel under the window. Install j channel under the window. Don t drive them tight.

Nail loosely enough so that the j molding slides. Install side j channels flush with the lower face of the bottom j channel and with the top of the window casing. This goes all around the window and you ll need new strips. Cut and bend drain tab.

This gives it a clean professional look. 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. For the window first position the j channel against the window casing. Nail it to the wall but remember not to nail it tightly.

Next measure and cut the siding to fit the measurements of your soffit and push each panel into the j channel. Drive roofing nails every 8 to 10 in. Hammer in roofing nails approximately every 8 inches at the middle of the nailing slots. Square corner j channel installation.

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. You can use roofing nails that are made of galvanized aluminum or stainless steel with high user ratings and good resistance to corrosion. If necessary bend the siding to fit into place. The vinyl siding trim pieces should slide back and forth slightly.

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. Install the j molding along the bottom edge of the window. Cut and position an undersill trim if necessary see when to use undersill trim. Place the side j channel and mark it then mark the bottom j channel.

The next step in waterproofing your window is to install the j channel. Cut and install top j flush with the outer face of the side j s. You work from the bottom up with this step as well overlapping top to bottom. Through the middle of the slots.