Secondary Glazing for Sash Windows
Preserve the elegance and character of your Georgian or Victorian sash windows while dramatically improving thermal efficiency, noise reduction, and security with our specialist secondary glazing systems.
Sash Window Types We Specialize In
Expert solutions for all traditional sash window styles
Traditional Georgian box sash windows with counterweight systems and elegant proportions.
- • 6-over-6 or 8-over-8 pane configurations
- • Thick glazing bars and deep reveals
- • Original pulleys and sash cords
- • Crown glass or early plate glass
Victorian era sash windows with larger panes and refined detailing.
- • 2-over-2 or 4-over-4 pane layouts
- • Slimmer glazing bars
- • Improved sash mechanisms
- • Larger glass panes
Early 20th century sash windows with simplified designs and larger glass areas.
- • 1-over-1 or 2-over-1 configurations
- • Minimal glazing bars
- • Larger single panes
- • Simplified hardware
Secondary Glazing Systems for Sash Windows
Tailored solutions that complement sash window operation
Mirrors the operation of original sash windows with vertical sliding panels that move up and down.
Benefits:
- • Maintains sash window aesthetic
- • Natural operation feels familiar
- • Suitable for tall windows
- • Balanced weight systems
Best For:
- • Georgian box sash windows
- • Victorian tall windows
- • Heritage properties
- • Frequently opened windows
Side-hung or top-hung panels that open like doors, providing easy access to original sash windows.
Benefits:
- • Easy access for cleaning
- • Simple operation
- • Cost-effective solution
- • Excellent sealing
Best For:
- • Victorian sash windows
- • Infrequently opened windows
- • Budget-conscious projects
- • Maximum performance
Removable panels that can be completely taken out for full access to original sash windows.
Benefits:
- • Complete window access
- • Seasonal installation option
- • Minimal visual impact
- • Easy maintenance
Best For:
- • Listed buildings
- • Rental properties
- • Seasonal use
- • Minimal intervention required
Side-sliding panels ideal for wide sash windows or where vertical operation isn't practical.
Benefits:
- • Space-saving operation
- • Smooth sliding action
- • Suitable for wide openings
- • Multiple panel options
Best For:
- • Wide sash windows
- • Bay window installations
- • Limited headroom
- • Modern sash windows
Sash Window Installation Process
Careful installation that respects your historic windows
Survey & Measure
Detailed survey of sash window condition, operation, and reveal dimensions for precise fitting.
Custom Manufacture
Bespoke secondary glazing frames manufactured to exact measurements and chosen opening system.
Careful Installation
Expert fitting with minimal disruption, preserving original window frames and decorative features.
Testing & Handover
Full operation testing, cleaning, and demonstration of secondary glazing system operation.
Why Sash Windows Need Secondary Glazing
Addressing the unique challenges of traditional sash windows
Common Sash Window Problems
Rattling and Drafts
Worn sash cords and aged timber create gaps allowing cold air infiltration
Poor Thermal Performance
Single glazing and air leakage result in significant heat loss and high energy bills
Noise Penetration
Minimal acoustic insulation allows external noise to disturb indoor comfort
Security Vulnerabilities
Traditional sash locks provide minimal security against modern break-in methods
Condensation Issues
Cold glass surfaces and poor ventilation lead to condensation and potential damage
Secondary Glazing Solutions
Eliminates Drafts
Creates airtight seal while preserving original sash window operation
60% Heat Loss Reduction
Dramatically improves thermal efficiency without altering historic windows
80% Noise Reduction
Superior acoustic performance creates peaceful indoor environment
Enhanced Security
Additional barrier with modern locking systems improves home security
Condensation Control
Warmer inner surface reduces condensation and protects window frames
Preserve Your Beautiful Sash Windows
Get expert advice and a free quote for secondary glazing that complements your traditional sash windows perfectly.