How To Install Interior Vinyl Window Trim. Cut through your trim as needed. Step 2 Measure the opening space to determine the width of the jamb extension needed.
2 Determine the depth of the extensions by sticking your tape into the slot and measure to the face of the drywall or. How to Install Window Casing and Interior Trim - YouTube. On the interior of a home nail holes in PVC can be filled with almost anything used with wood.
To fasten the trim to the wall I use 2 14-inch-long 15-gauge nails.
Cut and Install Bottom Trim To begin make a 45-degree cut on one end of a piece of trim that is longer that the width of the window. Next nail the skinny trim piece in place. Cut the boards on a table saw to create the box. This L should follow the right angle of the jamb and be 316 of an inch from the perimeter of the window frame.