How To Install Interior Window Trim. Start at the top and align the outside of the trim with the end of the head trim. Make a corresponding 45-degree cut and.
In this video This Old House general contractor Tom Silva installs interior window trim using hand tools. Rip the window stool to width using a handsaw. Cut a new piece of window trim at a 45-degree angle with your saw.
Scrape off all the old caulk and any other debris thats hanging around.
The first thing to do is to mark the reveal on the jamb extensions. This Old House general contractor Tom Silva installs interior window trim using hand tools. Scrape off all the old caulk and any other debris thats hanging around. Cut a 45-degree miter for the top end on a length of trim that is longer than the window is tall.