How To Install Interior Vinyl Window Trim. Installing Interior Window Trim 1 Determine the lengths of the window box components first measure the length of the header extension measuring from. Make them on the bench and nail them to the framing.
You can go crazy attaching shim stock to the trim the window frame is NEVER. Run a bead of caulk on the vinyl keeping to the side of your pencil margins. Rip the window stool to width using a handsaw.
Away from the jamb at both ends and along the base of the window casing.
Unless they also have steel framing then we hang them with foam adhesive same stuff they use for hanging drywall. Cut through your trim as needed. Match the window into which you plan to install your new trim with your choice of frame styles Step 2. Self adhesive back and corrugated lines make straight application and installation easy.