When dealing with historic buildings, it is important to try and preserve its original windows and frames. If windows are still intact under boards, they should be cleaned, repaired and maintained. Any missing window should be reconstructed in kind.
Rotted or missing pieces can be repaired by splicing in new pieces only in that location rather than replacing the entire window. Consolidants can also be used on wood that is damaged or shows signs of rot to prolong the lifespan. A full explanation of how to properly maintain or repair historic wood windows can be found on the National Park Service website here:
The General Services Administration (GSA) also provides technical sheets on historic preservation that list straightforward steps to follow and list companies/suppliers.
- Restoring Wood Window Sash and Frames
- Epoxy Repair For Deterioration And Decay In Wooden Members
- Surface Preparation For Painting Wood
When adding or repairing a canopy on your building, it is recommend that you avoid the use of corrugated metal with a squared off profile. The appearance is not historically correct, gives the impression of inferior quality, and lacks visual appeal.
The underside of the canopy can be exposed or solid. Wood bead board can be used to cover the canopy structure. Recessed lights can then be placed to illuminate the sidewalk.
Historically, sheet metal canopies were rolled and had a curved appearance. Flat metal sheets were connected by a standing seam. Decorative pressed metal tiles were less common on the exterior of a building, but often used inside.