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.
How to trim vinyl siding around windows.
Instruction on how to install exterior 2x4 trim around a new or old window.
Use tin snips to cut a length of j molding 2 inches longer than the width of the window.
Install the trim just under the drip cap.
For even more personality and charm add a decorative corner or crown molding above the door or window.
Apply a bead of caulk to the felt and set the window in the caulk.
The siding slides behind vinyl siding trim pieces that hide the gap and the cut end.
Cut a 1 inch notch out of the j molding at both ends by scoring it with a utility knife across its top side.
Next comes another layer of building wrap installed like the first layer.
Lock the panel into the one below it then gently snug it up before nailing.
Marking the position of each piece before you remove it photo 2 will help you reposition the siding without stretching it.