How To Trim Window Vinyl Siding

For even more personality and charm add a decorative corner or crown molding above the door or window.

How to trim window vinyl siding.

Exterior window trim on vinyl siding if your home has vinyl siding and you d like to add vinyl window trim you will first need to remove the existing siding and j channel from around the windows. Mark the inside of the window and one inch past that mark. Push one end of longer pieces into the trim then bow the siding slightly and guide the other end into the trim. Along the tops install j channel trim with horizontal siding and base trim with vertical siding.

They are much sturdier than wood and with versions being made in multiple colors and styles you can get vinyl window trim to match your exterior. Fashioning metal window trim with a brake is complicated for a do it yourselfer. Measure from the locking tab of the siding below to the undersill trim to determine the depth of the notch. Use tin snips to cut a length of j molding 2 inches longer than the width of the window.

Cut a 1 inch notch out of the j molding at both ends by scoring it with a utility knife across its top side. Certainteed window and door trim puts out the welcome mat creating a first impression with lasting effect. Cut the trim so it is two channel widths longer than the opening s width. Install the tops first then the sides and then the bottoms of the window surrounds.

Start by laying the bottom cap flush against the edge of the wood frame. It will not readily break warp or bow let alone rot. Use tin snips to trim off the metal flashing covering the exterior windowsill. Repeat for the other required notched corners.

Cut all the way to the first mark and remove the extra material then cut to the second mark then bend to create a tab. Pry off the vinyl siding and j channel from around the perimeter of the window. Maneuvering long pieces of vinyl into place can be tricky. To expedite installing vinyl siding on your home or for large projects you may want to call a professional vinyl siding company.

Vinyl siding window trim however is very resistant to the elements. Not all windows require this but if yours does call a professional for this step.