In cases where you are significantly altering the floor plan of your project, it may be necessary to raise a window sill. Some examples of situations where this may be required are installation of cabinetry and plumbing fixtures.

Local historic district ordinances are strict about how and where you may alter the outside appearance of your building. If you are applying for historic tax credits or located in a local historic district, using the correct detail will be critical to the success of your project. In local historic districts, however, even this detail will not be acceptable where it can be seen from the street.

The masonry details are a key component to this detail. The infill section is recessed 2" from the face of the exterior wall in order to preserve a record of the original opening. As in all historic situations, the mortar must match the existing mortar in color, composition, and joint profile.

Click here or on the image below to open a downloadable pdf file of this detail. The brick portion of this detail can also be used (without the window) to completely infill a window or door opening.