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Fixed sashes are non-opening window units—typically timber-framed panels with glazing—that are permanently sealed within a window frame or bay.
The windows create unbroken views through their design which enhances thermal insulation because of their airtight construction and structural stability.
The heritage preservation of fixed sashes emerges through their placement at bay window centers and door tops and decorative transoms where they mimic original designs by using authentic glazing bars and putty glazing while supporting modern insulated glass for Part L compliance.
Draught-Proofing
Draught-proofing (sash windows) involves sealing the moving sash gaps to stop cold air from entering while enhancing heat retention and […]
Dormer window
Dormer windows are instantly recognisable features of much historic European architecture and describe a window set into a sloping roof. […]
U-value
U-value measures how effectively a window resists heat transfer—the lower the U-value, the better the insulation. Expressed in W/m²K (watts […]
