Exterior Window Trim Headers
While windows are typically trimmed with the same profile around the entire window (or top + 2 sides + sill), another popular option is to simply add a piece of trim to the top of a window, otherwise known as a “Window Header“. Window headers are less expensive than trimming an entire window because only 1/4th of the moldings are required, but still make a big difference in the overall appearance of a building.
Window headers usually incorporate some sort of keystone into the middle so as to avoid looking overly “plain”. They typically extend slightly past the width of the window, and side-trim if present.
- Windows under 4′ width shouldn’t use any piece of molding larger than 6″ in height
- Windows above 4′ width look good with moldings between 6″ and 9″ in height
- Very large windows can get away with moldings upwards of 12″
Check out the Window Trim and Sill Proportions page for more information.
Using a Decoramould product with a large, flat top to it is generally not recommended for Window Headers, as rain/snow and other precipitation tends to pool on top, causing damage over time.