Installing Vinyl Siding Window Trim

Install siding around windows.

Installing vinyl siding window trim.

Gap at all ends. Fitting siding over 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. Certainteed window and door trim puts out the welcome mat creating a first impression with lasting effect.

Before installing door and window trim first caulk around the openings to create a moisture and air proof seal. Install the tops first then the sides and then the bottoms of the window surrounds. When you get to a window you will need to cut sections from the panels directly above and below it to fit. Furring may be necessary to maintain proper pitch of the siding.

The resulting raised lugs should face outward and will snap into undersill trim. Along the tops install j channel trim with horizontal siding and base trim with vertical siding. To prevent the relatively thin panels from buckling observe these fitting and nailing rules. 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. 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. Vinyl siding installation is designed to hang loosely on the sheathing so that it can expand and contract with temperature changes. Install undersill trim the width of the window flush to the casing.

For even more personality and charm add a decorative corner or crown molding above the door or window. Instruction on how to install exterior 2x4 trim around a new or old window.