West Sussex · England
Secondary Glazing in West Sussex
Is traffic noise getting through the windows of your home in West Sussex? We can quote for acoustic secondary glazing tailored to each opening.
- Guide from £465
- 9 towns covered
- Postcode areas BN, GU, PO, RH
Secondary glazing listed buildings in West Sussex: what to know
The price of secondary glazing depends on the size and number of windows, the opening style, the glass specification, any shaped or arched heads, reveal depth and condition, and access. Acoustic laminated glass and shaped frames cost more than standard clear glass in rectangular frames.
For noise reduction, the size of the air gap between the original window and the secondary unit matters a great deal, and a wider cavity generally performs better. Acoustic laminated glass and well-sealed frames improve results further, especially against traffic, rail and aircraft noise.
Secondary glazing can also add security, because an intruder would have to break through two separate windows. Laminated glass and locking catches on the secondary unit add further resistance, which is useful for ground-floor and basement windows in period properties.
Low-level secondary glazing is still glazing, so the safety glazing rules for critical locations apply. In England, Approved Document K treats glass within 800mm of the floor as a critical location, so low-level secondary panes should be toughened or laminated safety glass.

Towns we cover for secondary glazing in West Sussex
Choose your town for local details, nearby areas and the postcode districts we cover.
What applies in West Sussex
Approved Document K requires safety glass in critical locations in England: glazing in doors and in side panels within 300 mm of a door, up to 1500 mm above floor level, and any glazing in walls or partitions up to 800 mm above floor level.
Approved Document B covers escape windows. Where an existing window is an escape route, typically in first-floor bedrooms, its replacement should give at least the same escape opening as before.
West Sussex has its own coastline, so for homes and businesses near the sea, salt air and wind-driven rain are part of the brief. Coastal properties often have older windows exposed to wind-driven rain and draughts. Secondary glazing adds a sealed inner layer that reduces draughts and cold, while the original window keeps out the weather and its condition is protected from inside.
Rural cottages and period homes often have single-glazed timber windows that cannot easily be replaced. Secondary glazing reduces draughts and heat loss in exposed locations, and the surveyor allows for uneven reveals and older plaster when fixing frames.
Guide prices
| Typical job | Guide price inc VAT |
|---|---|
| Slider, 900 × 1200 mm | £465 – £595 |
| Slider, 1200 × 1600 mm | £665 – £845 |
| Acoustic glass, 1000 × 1400 mm | £675 – £865 |
Choosing your secondary glazing
Hinged casement
Panels open inwards like a door, giving full access to the original window, and can be chosen for escape windows.
Acoustic laminated glass
Laminated glass with a sound-dampening interlayer, combined with a generous cavity, for properties affected by traffic, rail or aircraft noise.
Horizontal sliding
Panels slide sideways, suiting wide casement windows and openings where you need regular access for cleaning or ventilation.
Fixed panel
A non-opening unit for windows never opened, giving the most airtight seal for noise and draught reduction.
Secondary Glazing in West Sussex: questions
Does secondary glazing need safety glass?
It does in critical locations. In England, glass within 800mm of the floor, glass in doors and glass near doors are critical locations under Approved Document K, and these apply to secondary glazing too. Low-level secondary panes should be toughened or laminated safety glass. The surveyor checks each window during the survey.
How do I clean and look after secondary glazing?
Open or remove the panels as designed, then clean the glass with mild soapy water and a soft cloth. Wipe the aluminium frames and runners, and keep tracks free of dust so panels slide smoothly. Check seals and catches occasionally. Avoid abrasive cleaners, which can scratch coated glass.
Which opening style should I choose?
Choose based on how you use the window. Vertical sliders suit sash windows and keep meeting rails aligned. Horizontal sliders suit wide windows. Hinged panels give full access for cleaning and escape. Lift-out and fixed panels suit windows that are rarely or never opened, and give the tightest seal for noise.
How much does secondary glazing cost?
The cost depends on the size and number of windows, the opening style, the type of glass, any arched or shaped heads, reveal depth and access. Acoustic and low-E glass cost more than standard clear glass, and shaped frames need more work. See the guide prices for typical windows, then get a written quote after the survey.
Which parts of West Sussex do you cover for secondary glazing?
We cover the whole of West Sussex, including Crawley, Worthing, Bognor Regis, Littlehampton and Horsham, and postcode areas BN, GU, PO, RH. Building rules for secondary glazing here follow the regulations for England. Enter your postcode on the quote form and we will confirm cover; then a glazier will arrange a free survey before giving you a written quote.
Other glazing services in West Sussex
- Replacement Glass in West Sussex
- Misted Glass Repair in West Sussex
- Emergency Glazing in West Sussex
- Safety Glass in West Sussex
- Window Repairs in West Sussex
- Window Film in West Sussex
- uPVC Windows in West Sussex
- Aluminium Windows in West Sussex
- Sash Windows in West Sussex
- Composite Doors in West Sussex
- Bifold Doors in West Sussex
- Sliding Doors in West Sussex
- Roof Lanterns in West Sussex
- Glass Balustrades in West Sussex
- Frameless Glass in West Sussex
- Shower Screens in West Sussex
- Glass Splashbacks in West Sussex
- Bespoke Mirrors in West Sussex
- Glass Roofs in West Sussex
- Shopfront Glazing in West Sussex
- Curtain Walling in West Sussex
- Glass Partitions in West Sussex
- Property Glazing in West Sussex
All glazing in West Sussex · Secondary Glazing across the UK
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