Many window manufacturers have incorporated many different upgrades and options in their new “historical” windows. Marvin, by way of instance, offers single glazing, authentic divided lights, and custom wood sills, in addition to wood screens and storm windows.┬áBased on the amount of preservation required, in addition, there are specialty producers and millwork companies which replicate original layouts just or even piece together clues to re-create size and muntin profiles when originals no longer exist.

Glass type is a very important consideration: Designers needing true validity select handblown sheet glass from restoration glass firms like Bendheim. Based on the source and craft method, this classic glass is also referred to as strand or crown glass and is the sole representation of glass produced during the eighteenth to early twentieth centuries. Shaped by hand, it’s characterized by waviness and compact imperfections–homeowners concerned about visibility should inquire about mild distortion levels.

Mahogany, typically stained, is particularly suitable for bigger windows and doors. “Mahogany is a much more secure wood for anything oversize.”

Small in stature but significant in a window’s overall look is hardware. Many manufacturers offer updated lines, notes Decker, who urges oil-rubbed bronze or unlacquered brass for historic authenticity. Hardware for casements shouldn’t be overlooked: “We often use a push-out handle for in-swing and out-swing casements versus a crank. The push-out is quite period suitable,” she says.

How a window was initially made and what sorts of materials were available notify correct choice. These sheets were afterwards crafted into double-hungs.

Shepherd’s Connecticut-based firm specializes in preservation and millwork and is well known for crafting historically accurate windows, from eighteenth-century twelve-over-twelves to more elaborate Palladian windows. Noting that, in any home, windows might have been replaced one or more times during the years, Shepherd uses his knowledge of ancient American construction methods to investigate not just the original windows’ sizes but also their muntin profiles.

His firm puts reclaimed cylinder glass to true divided lights–individual panes of glass between muntin bars–mirroring historical construction. Another detail his company prioritizes is the wood’s finished feel. “Our surfaces are produced by machine and then hand-planed. After the wood is painted, you can see a small ripple.”