Sash
Windows
Tradition in every detail
Our sash windows are the quintessence of British architecture. We offer two systems:
Weight & Cords
Authentic box sash construction – ideal for listed buildings, protected properties and conservation projects. Each window operates using traditional cords, pulleys and lead or steel weights, ensuring smooth, balanced movement for years.
Spring Balance
Modern alternative – clean appearance without visible cords, smooth operation and reduced installation depth. Perfect for contemporary builds or where aesthetic preferences require minimalist profiles.
Key features:
Engineered timber: pine, oak or meranti (FSC®)
Slim profiles and traditional glazing bars for historical authenticity
Optional decorative sash horns
Double glazed units or heritage single glazing
Internal glazing for enhanced security
Factory-applied coatings in any RAL/NCS colour
Ideal for listed buildings and conservation projects
Sash Balance
(50-45)
Glazing unit:
24-28 mm
Pane:
Ug 1.0 W/(m²·K)
Spacer:
WARM
Material:
PINE JOINTED / MERANTI / OAK / SAPELE / ACCOYA
Fitting:
CALDWELL / MIGHTON
Colour:
VARNISH COLORS / RAL / F&B
Gasket:
QLON
Silicone:
WHITE / BLACK / CLEAR / GREY / BROWN
Frame width:
146 mm
Heat Transfer Coefficient:
1.3 W/(m²·K)
Sash Balance Elegance
(50-63)
Glazing unit:
24-28 mm
Pane:
Ug 1.0 W/(m²·K)
Spacer:
WARM
Material:
PINE JOINTED / MERANTI / OAK / SAPELE / ACCOYA
Fitting:
CALDWELL / MIGHTON
Colour:
VARNISH COLORS / RAL / F&B
Gasket:
QLON
Silicone:
WHITE / BLACK / CLEAR / GREY / BROWN
Frame width:
146 mm
Heat Transfer Coefficient:
1.4 W/(m²·K)
Sash Excellent
Weights&Cords
Glazing unit:
24-38 mm
Pane:
Ug 1.0 W/(m²·K)
Spacer:
WARM
Material:
PINE JOINTED / MERANTI / OAK / SAPELE / ACCOYA
Fitting:
CALDWELL / MIGHTON
Colour:
VARNISH COLORS / RAL / F&B
Gasket:
QLON
Silicone:
WHITE / BLACK / CLEAR / GREY / BROWN
Frame width:
134 mm
Sash Renovation
Glazing unit:
14 mm
Pane:
Ug 1.7 W/(m²·K)
Spacer:
WARM
Material:
PINE JOINTED / MERANTI / OAK / SAPELE / ACCOYA
Fitting:
CALDWELL / MIGHTON
Colour:
VARNISH COLORS / RAL / F&B
Gasket:
QLON
Silicone:
WHITE / BLACK / CLEAR / GREY / BROWN
Frame width:
134 mm
Already know
what you need?
Contact our consultant to tailor the product to your needs.
Q4Sash windows and doors offer quality you can rely on – from design to implementation.