Installing Vinyl Siding Window Trim

The siding slides behind vinyl siding trim pieces that hide the gap and the cut end.

Installing vinyl siding window trim.

When you get to a window you will need to cut sections from the panels directly above and below it to fit. Install undersill trim the width of the window flush to the casing. Install the tops first then the sides and then the bottoms of the window surrounds. Using the snap lock punch punch the panel 1 4 in.

Fitting siding over windows. Install siding at the top of a window or door in a similar fashion but this time set the siding on the window channel and use the window trim to mark the cut. The resulting raised lugs should face outward and will snap into undersill trim. Instruction on how to install exterior 2x4 trim around a new or old window.

Below the cut edge at 6 in. Gap at all ends. Before installing door and window trim first caulk around the openings to create a moisture and air proof seal. Along the tops install j channel trim with horizontal siding and base trim with vertical siding.

Furring may be necessary to maintain proper pitch of the siding. To prevent the relatively thin panels from buckling observe these fitting and nailing rules. For even more personality and charm add a decorative corner or crown molding above the door or window. Install siding around windows.

Measure the width of the piece you need to cut by holding the length of siding against the window and marking the edge points on the panel with a pencil. Cutting and installing the siding 1 place the piece of siding to be installed under the window along the bottom edge and hold it where it will be located horizontally along the wall.