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A tabernacle frame is a traditional timber sub-frame used in sash window construction to support the pulley stiles and house the sash weights within the wall reveal. It sits behind the main window box and provides structural stability, allowing the sashes to operate smoothly while keeping the counterweight system concealed.
Common in Georgian and Victorian buildings, tabernacle frames are often built into thick masonry walls and are critical to the long-term performance of original sash windows. During restoration, preserving or accurately replicating this hidden component ensures authentic operation and alignment.
Victorian Sash Windows
Victorian sash windows are characterised by their taller proportions, often featuring a two-over-two or six-over-six glazing bar pattern, ornate sash […]
Apron
An apron is the horizontal timber board fixed directly beneath a window sill on the interior, often used to cover […]
Glazing Rail
A glazing rail is the horizontal timber member within a sash window that holds the glass panes in place, forming […]
