Architecturally Authentic Construction
True Divided Lite Windows
True divided lites — individual panes of glass held in solid wood muntins — are the defining construction of historic windows. We build them the way they were originally built.
What Are True Divided Lites?
A true divided lite window is one in which the sash is divided into individual glass panes by solid wood muntins — the narrow bars that form the grid pattern visible in historic windows. Each pane of glass is a separate piece, set individually into the muntin grid and held in place with glazing compound.
This construction is architecturally and visually distinct from simulated divided lites, which use a single large pane of glass with a plastic or aluminum grid overlay applied to the interior or exterior surface, or sandwiched between panes of insulating glass. Simulated grilles approximate the pattern of a divided lite window but do not replicate its visual character.
The difference is visible. True divided lites produce shadow lines from the solid muntin depth, slight variations in individual glass panes, and the dimensional profile of the glazing bars that give historic windows their characteristic appearance. These are qualities that simulated grilles cannot reproduce.
Muntin Profiles and Historic Accuracy
The profile of the muntin — its cross-sectional shape — varies by period and architectural style. Colonial and Federal windows typically use a delicate ovolo or lamb's tongue profile. Victorian windows may use a more substantial ogee or beaded profile. Craftsman windows often feature a simpler, more rectilinear muntin.
We replicate the muntin profile of the original window as part of our measurement and documentation process. Matching the profile is as important as matching the overall dimensions — it is the detail that distinguishes an accurate replica from a generic approximation.
Common Historic Lite Configurations
Six-Over-Six
Six panes in the upper sash, six in the lower — the most common configuration in Federal and Greek Revival architecture and widely used in vernacular residential buildings of the 18th and 19th centuries.
Two-Over-Two
Two panes over two — common in late Victorian and early 20th-century residential architecture, including Craftsman and Colonial Revival styles.
One-Over-One
A single large pane in each sash — common in late 19th and early 20th-century architecture as glass manufacturing improved and larger panes became available.
Eight-Over-Eight and Other Configurations
Eight-over-eight, four-over-four, and other multi-lite configurations appear in colonial and early Federal architecture. We replicate any configuration found in the original windows.
See also: Historic Wood Window Replicas — our primary service page covering all aspects of historic window replication.
Frequently Asked Questions
Common Questions
Build True Divided Lite Windows for Your Property
If your project requires historically accurate true divided lite windows, we welcome the opportunity to discuss your specifications and preservation goals.