THE LOSS OF THE HISTORIC WINDOW


Left: View showing circa 1810 replacement sashes with fine lead and iron glazing-bars – from Clandon House, Guildford, Surrey


These sashes were fitted to replace the original circa 1730s oak frames which had heavy ‘ovolo’-moulded glazing-bars similar to those that still survive in the basement.


To achieve fine glazing- bars in the second half of the 18th century, there were several patents for various forms of metal varieties. Happily, examples of both the original 1730s sash windows and early 19th-century replacements survived the disastrous fire of 2015


Right: View of a glazing-bar display in the teaching gallery illustrating the evolution of the glazing-bar, circa 1720-1880


The teaching gallery provides the opportunity to examine a wide cross- section of window joinery elements and mouldings, particularly glazing-bars, so important in repair and reinstatement work.


An understanding of the subtle changes in moulding profiles is essential when surveying historic joinery


Section of a ground- floor sash window with internal folding shutters – from No. 2, Beach Road, Hayling Island, Hampshire, built in 1828


I am regularly consulted by the amenity bodies, such as Historic England, the National Trust, and the Georgian Group, etc., along with architects, historians, professionals, designers, and house-owners keen to learn more about their existing period windows, and not only how to repair windows in poor condition, but how to reinstate them, often from scratch, where they have been removed and replaced with inappropriate copies or uPVC.


Glazing-bar profiles and sections have been instrumental in the correct reinstatement of windows in several important projects over the years, including Richmond Terrace, Whitehall, designed by Thomas Chawner in circa 1821, the Clavell Tower, Kimmeridge, Dorset, and the folly tower of circa 1770 at Painshill Park, Cobham, Surrey.


The Brooking also charts the development and evolution of the English door, fanlight, shutter, window and door ironmongery, domestic stained and decorative glass, architraves, skirting, dado and picture-rail profiles, the timber staircase, the coal-burning fire-grate, and rainwater goods.


Continued >>


Section of a ground-floor sash window with internal vertically-sliding shutters – from No. 19, Commercial Road, Guildford, Surrey, built circa 1865


This section was recently measured and drawn by an architect reinstating lost window joinery of the 1860s.


Note the ‘cavetto’ moulding to the outside lining of the window. This was a widely-used detail in Guildford during the second half of the 19th century. Also note the sophisticated concealed sash-cord detail to the internal counter-balanced shutters.


There were various forms of shutters developed in the 18th and 19th centuries, many now being painted/nailed-up and lost, awaiting discovery!


This cross-section illustrates the complex construction of shutters and their casings. It was recovered prior to the demolition of the house in 1993 with


the kind permission of the owners


72


Listed Heritage Magazine January/February 2020


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