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Sliding Sash Windows Egham Company, call London and Surrey Windows on 0208 058 2765 or use our simple online contact form. Our experienced, independently star rated, Egham Sliding Sash Window (Design) Team can assist you with any Sliding Sash Windows in Egham Recommended requirements, so please do not hesitate to contact our team on 0208 058 2765.
Timber remains the traditional and often preferred material. Softwood and hardwood options, along with engineered timber, deliver genuine character, good insulation when correctly specified, and the advantage of repairability. In conservation areas and listed buildings, timber is frequently the only material accepted by planning authorities.
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Modern alternatives include high-quality uPVC and aluminium systems designed to replicate timber profiles. These materials provide lower maintenance, competitive thermal performance and a wide range of colours and wood-effect finishes. Aluminium offers particular strength for larger openings, while uPVC remains the most economical option for many homeowners.
Sash windows bring a range of functional advantages. They deliver excellent controlled ventilation by allowing air to enter at both the top and bottom simultaneously. Balanced dimensions allow generous daylight penetration. When equipped with modern double or triple glazing, draught seals and high-performance glass, they deliver strong energy efficiency and sound insulation.
Restoration and careful replacement are important for the UK’s stock of historic houses. Many original windows can be repaired, sealed against draughts and upgraded with slim-profile double glazing while keeping their original character. New timber or high-quality replica windows help owners preserve architectural integrity within conservation areas.
Sash windows have moved from exclusive innovation through widespread adoption to valued heritage feature once more. Practicality combined with elegance and historical depth keeps them central to British domestic architecture. Whether restoring a Georgian terrace, replacing windows in a Victorian villa or specifying new installations for a modern development, the sliding sash remains a versatile and enduring choice that links past craftsmanship with present-day living standards.
Two principal mechanical types exist today. Classic box sash windows enclose heavy weights inside hollow timber boxes, preserving authentic movement and visual qualities. Spring-balanced alternatives rely on concealed spiral mechanisms that support thinner sections and more straightforward installation. Double-hung systems permitting free movement of both sashes, plus single-hung variants, remain standard.
Among the most iconic and appreciated aspects of British architecture are sash windows. Vertically sliding windows of this type have influenced the appearance of streets and residences across the country for well over three centuries. Refined proportions, reliable ventilation and enduring style keep them the selection of choice for period dwellings and a good many new constructions.
Origins of the sash window lie in the late seventeenth century. Debate persists about whether the design was first devised in England, the Netherlands or France, yet Britain soon claimed it as its own. Surviving early instances can be found at places such as Ham House in Surrey from the 1670s. Sir Christopher Wren and his joiners refined the counterweight system and promoted its wider acceptance.
During the Georgian period from 1714 to 1837, sash windows reached their classic form. Tall and slender windows arranged in six-over-six patterns became signatures of refined townhouses across London, Bath, Edinburgh and other cities. Restricted pane sizes resulting from glass technology required numerous thin glazing bars. Building regulations following the Great Fire encouraged recessed frames, producing the deep reveals that characterise the style to this day.
Victorian developments spanning 1837 to 1901 introduced major advances. Progress in glass manufacture supported larger panes and therefore cleaner two-over-two or one-over-one configurations. Projecting horns were introduced to reinforce the meeting rails against damage. Bay windows grew common, and the end of the window tax allowed sash windows to become standard on homes of all social ranks.
Edwardian sash windows, produced roughly between 1901 and 1914, often combined earlier influences. Six smaller upper panes above two larger lower panes formed a frequent pattern. These windows generally appeared broader and less heavy than Victorian counterparts.
Glazing bar patterns remain the clearest indicator of period style. Georgian windows generally exhibit six-over-six or eight-over-eight divisions with fine bars. Victorian examples favour two-over-two layouts with larger glass areas. Edwardian designs frequently mix multi-pane upper sashes with clear lower ones.
