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Concrete observations across London and Dorset show how altered glazing, weights, pulley mechanisms, joinery details, paint evolution, and glass types also affect how buildings can be dated.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/research-report/","Research & 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installment?","Question",{"text":62,"@type":63},"He charts the development of the sash box in Georgian windows, emphasizing how construction methods and design refinements evolved over time.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"Why does the document warn about replacing historic sash windows?",{"text":67,"@type":63},"Wholesale loss of period window fabric is described as shocking, because it removes architectural, historic, and aesthetic value—especially early glazing and other measurable construction details.",{"name":69,"@type":60,"acceptedAnswer":70},"What additional insulation options does the document suggest?",{"text":71,"@type":63},"It suggests considering non-destructive approaches such as secondary glazing or heavy curtains instead of wholesale 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historian and historic building consultant, charts the development of the sash box, showing its importance as an example of Georgian craftsmanship and technology  \nDowning Street, London photographed by Charles Brooking in 1992 during his architectural survey of the government buildings  \nIbecame fascinated by sash windows and their con  \nstruction at a young age and, ever since, I have assembled a considerable archive of several thousand examples which illustrates the subtle nuances of their construction and the gradual improvement in the design of this important window type. The collection of complete examples and sections ranges from the 1690s to the present day, and clearly shows that the sash window had reached its zenith in terms of design, elegance and refinement during the 1770–80s, with further improvements during the Regency period.  \nIt is very upsetting therefore to see that the window, in all its forms, has never been under greater  \nthreat of obliteration. The wholesale loss of historic window fenestration, along with doors and joinery, over the last thirty years is shocking, but largely driven by a desire for energy-saving and insulation. Well intentioned people often fail to appreciate the architectural, historic and aesthetic importance of period windows, particularly in terms of the loss of early glazing, as crown and cylinder glass, with its glorious reflective qualities, add so much visual liveliness to a façade. Other, non-destructive, forms of insulation, such as secondary glazing or heavy curtains, should be considered.  \nOn a recent visit to Weymouth and Lyme Regis, my first since the 1980s, I was alarmed to see how many of the Georgian and Regency windows that I had seen on my last trip had been replaced by either plastic or copycat poor-quality timber sashes; this is a trend that is repeated across the country. Over the last two years, I have acquired increasing numbers of Regency bow windows and sash-box examples, recovered from double-glazing companies. The appearance of a building is not the only thing affected by wholesale replacement of historic fenestration; features such as sash-pulleys and weights, joinery details, paint evolution and glass type are invaluable in helping to date a building.  \nThe story of the development of the sash window during the Georgian period is illustrated here using examples from my Cranleigh Teaching Gallery and it is worth noting that both hollowed-out and built-upsash boxes evolved contemporaneously. The intricate construction of these intriguing features will hopefully tell its own story in the value that sash windows hold not least as examples of skill and artistry.  \nThe aim of my teaching gallery at Cranleigh is to celebrate the importance of our eighteenth-and nineteenth-century built fabric before it is too late; thousands of windows are being replaced at growing speed, often inappropriately, as any visit to our towns will highlight.  \n28 | the georgian  \n1700– 10  \n100mm  \n140 The Strand  \nLondon  \nSection of a sash-frame from the rear elevation. This building, dating from c.1700–10, retained examples of its original Baltic pine sash-frames which had weight-boxes hollowed-out from the solid sections. It was modified in the late eighteenth to early nineteenth centuries to allow for the upper sash to be made operational with weights, as it was originally fixed. The box was cut out further to allow room for two sets of weights, the headpiece being built into the structure with horns. Also note the curve of the tree, this timber being cut from the edge of the log.  \n1707  \n140mm  \n26 Southampton Street  \nLondon  \nSection of sash-window box frame dating from c.1707. This building was once the home of actor David Garrick. The box frame was hollowed out of a solid piece of timber, rather than built up from component parts. Both types of box frame were","cbCaiqpCSwp3oQel","https://ap.wps.com/l/cbCaiqpCSwp3oQel","pdf",3017543,"English","# Introduction: Georgian sash windows\n## Threats from wholesale replacement and insulation\n# Observations across regions and recovered sash examples\n## Dating evidence: weights, pulleys, joinery, paint, glass\n# Teaching gallery aim at Cranleigh\n## Preserving eighteenth- and nineteenth-century fabric\n# Sash-frame and box-frame examples (c.1700–1770s)","[{\"question\":\"What does Charles Brooking focus on in this installment?\",\"answer\":\"He charts the development of the sash box in Georgian windows, emphasizing how construction methods and design refinements evolved over time.\"},{\"question\":\"Why does the document warn about replacing historic sash windows?\",\"answer\":\"Wholesale loss of period window fabric is described as shocking, because it removes architectural, historic, and aesthetic value—especially early glazing and other measurable construction details.\"},{\"question\":\"What additional insulation options does the document suggest?\",\"answer\":\"It suggests considering non-destructive approaches such as secondary glazing or heavy curtains instead of wholesale replacement.\"}]","Historic Sash Windows - Second in His Series on Georgian Windows | PDF"]