Installing Vinyl Siding Window Trim

Install the tops first then the sides and then the bottoms of the window surrounds.

Installing vinyl siding window trim.

The siding slides behind vinyl siding trim pieces that hide the gap and the cut end. Lineal trim can help unify and accent a home s exterior adding a design element that can be both subtle and distinctive. When you get to a window you will need to cut sections from the panels directly above and below it to fit. Before installing door and window trim first caulk around the openings to create a moisture and air proof seal.

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. Gap at all ends. Below the cut edge at 6 in. For even more personality and charm add a decorative corner or crown molding above the door or window.

The resulting raised lugs should face outward and will snap into undersill trim. To prevent the relatively thin panels from buckling observe these fitting and nailing rules. 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. Instruction on how to install exterior 2x4 trim around a new or old window.

Along the tops install j channel trim with horizontal siding and base trim with vertical siding. Using the snap lock punch punch the panel 1 4 in. Certainteed window and door trim puts out the welcome mat creating a first impression with lasting effect. Vinyl siding installation is designed to hang loosely on the sheathing so that it can expand and contract with temperature changes.

Furring may be necessary to maintain proper pitch of the siding. Install undersill trim the width of the window flush to the casing.