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Heritage Windows - Box Sash

Our Heritage Sash windows are true heritage windows, the real deal. Featuring slim glass, real putty, slim rails and a small 135mm depth of frame, it is the perfect design to match the originals made decades ago.

HERITAGE WINDOWS - Box Sash, sliding
(14mm Krypton filled glass)

Additional features of this Heritage Windows System:

  • slimline 14mm Double glazing unit, filled with Krypton Gas, with approx 5mm heritage spacer bar edge lines, sprig fixing under putty to fix the glass, approx 7 to 8 mm glazing rebate
  • externally glazed with true putty sealing outside, and painted over for further sealing, to match originals windows made a 100 years ago
  • slim georgian bars at 18 or 20mm with separate glass units
  • slim 30mm mid rails
  • slim box sash frame at 135mm inside to outside thickness
  • our standard is engineered European redwood or hardwood Sapele.
  • whole timber elements can be used if preferred
  • standard is brush painted, or sprayed if preferred
  • concealed gasket system to prevent rattles and leaks
  • deep bottom rails
  • CE Marked EN 14351-1 2006+A1:2010
  • u-value = 1.5 W/m2K (measured on redwood items)
  • square end traditional pulleys and weights
  • fitch fasteners,
  • d-handles
  • lifting Hooks
  • child Locks/ Extra Security available
  • arched or swept heads or arched frames
  • custom horn designs
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