Brick Mold
A brick mold is the molding used around a door or window, between the wall and the door or window itself. A brick mold can be constructed out of plain lumber.
A brick mold is basically just a piece of wood which fills the gap between where the door or window will fit, and the masonry or wall of the house itself. Depending on the need and size of the door or window, the size of the board or lumber used varies, and is often decided by what fits best in the particular situation, though roughly three to four inches wide is a standard size.
Brick Mold Materials
The typical brick mold is made of a soft wood, such as white or yellow pine. However, over time soft woods might become affected by weather conditions, especially if not sealed and painted correctly.
A brick mold can rot, and this causes expensive window removal and repair. Hardwood and PVC brick molds are also available in supply stores, and might be a most cost efficient material to use in the long run.