Which brick position is commonly utilized on window sills?

The correct choice for the brick position commonly utilized on window sills is the rowlock. In masonry work, a rowlock refers to a brick laid on its face with the end facing out. This configuration is ideal for window sills as it provides a flat, smooth surface that helps direct water away from the window and minimizes potential damage from moisture.

Rowlock bricks are typically used to create a more aesthetically pleasing finish on sills while also serving a functional purpose. This positioning can also aid in drainage, as it helps channel water away from the window frame, reducing the likelihood of leaks or water damage.

Other types of brick positions, such as stretchers, headers, and soldiers, serve different functions in masonry construction. Stretchers are laid lengthwise and are commonly found in the wall surface, headers are laid endwise to bond walls, and soldiers are laid upright and typically used for decorative purposes in building facades. While all these positions have their own specific uses in masonry, the rowlock is particularly effective for window sills due to its unique profile and functional attributes.