Installing Window Trim on Storm Windows

Installing storm windows makes a lot of sense if you are attempting to reduce energy costs or simply wish to make your home more efficient and less drafty. In order to make your new windows as attractive as possible, you will want to install window trim as well. Since storm windows are typically installed more for efficiency than for any specific design scheme, the styles that will typically be installed are much more simple than window trim styles for other, more prominent types of windows. That is not to say that you couldn't add ivory columns to your storm window treatment - just that it's not often done.

Wrap-around Trim

When installing a storm window, remember that there will almost always be an extant window that the storm window will be accompanying. Usually, this preexisting window will be fitted with some sort of decorative trim that you have already picked out to fit with your individual design aesthetic. Since the ideal of a storm window is to fit seamlessly into the same window frame as the primary window without being overly noticeable, most people opt for more basic, less noticeable window trim for their storm windows. The most basic window trim option, therefore, is the simple wrap-around trim that resembles a picture frame in its design and simplicity.

Installing Wrap-around Trim

  1. The first step in installing wrap-around trim will be to measure the window area both vertically and horizontally from inside edge to inside edge.
  2. Using a miter saw, cut one piece of pre-purchased window trim to the length of either one of the sides or the top or bottom, with 45 degree angles on either end.
  3. After making sure that your original measurements were correct by holding, insert the window trim into the window frame and nail it into place using basic finishing nails.
  4. Repeat this step with each side of trim, making sure that the miter joints align correctly with each new piece inserted.
  5. When you're satisfied that your trim pieces are positioned correctly, drive finishing nails diagonally through the trim every 8 to 10 inches in order to permanently secure the trim in place. 

At this point, it is worth noting that if you don't have the necessary tools to make a miter joint (a miter saw), it is possible to construct window trim that will be perfectly satisfactory for the purposes of a storm window by using simple butt joints. To do this, the trim will simply be cut at right angles at the ends, as opposed to 45 degree angles. The trim pieces will  be arranged in such a way as to butt up against one another, instead of fitting together at diagonals. While this technique may not appear as visually streamlined as miter joints, it is perfectly acceptable for most storm windows and won't detract from the overall appearance of your windows in the end.