agriculture-and-agri-food-canada-building-74-window-replacement
Project Team :
Architect of Record: Bryden Martel Architects Incorporated
Description :
The project mandated was to provide architectural services for the replacement of the exterior windows and exterior envelope upgrades. The mandate included the preparation of a report to submit to the Federal Heritage Buildings Review Office (FHBRO).
Building 74 at the Central Experimental Farm in Ottawa was built in two phases, the first being in 1924. In 1929, an addition was built which doubled the building's size. The building has been classified as a "Recognized Heritage Structure" as established by the Federal Heritage Buildings Review Office (FHBRO).
The majority of the existing windows were of the single hung style, while others were casement style. Most were glazed with a single sheet of glass while others have original muntin bars and truly divided single glazing using traditional putty. There were approximately 97 windows of varying sizes and type to be replaced.
Two options for window replacement on Building 74 were identified to the client in the initial study. In either option, the exterior window sashes and frames would be clad in a coloured metal such as steel or aluminum, and the interior surfaces would be wood with a painted finish :
Option 1: A partial replacement of the window, also known as the "sash insert" approach.
Option 2: A full replacement of the entire window including frame, operable sashes, operating hardware, casings and trim, down to the rough opening framing of the exterior wall.
Option 2 was recommended for implementation and was adopted by the AAFC and accepted by FHBRO.
The replacement of windows involved the full removal of the entire window and frame. The rough openings were repaired, re-insulated and a proper air barrier was installed. Repairs were required at the interior plaster work. Where possible, the existing interior wood sills were salvaged and repaired.
Other repairs to the building envelope were undertaken during the construction process and included the replacement of trim boards, soffit and fascia board replacement, roof shingle replacement at the dormer windows and new traditional stucco repairs.