What should security secondary glazing cost in Dunstable?
Our guide range for security secondary glazing in Dunstable is £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window, including fitting. The survey is free for new installations and your fixed price follows in writing.
Security secondary glazing is a separate slim window fitted on the room side of an existing window, glazed with laminated glass so it forms a second barrier. It leaves the original window untouched outside, which makes it a common choice for listed buildings, conservation areas and period sash windows.
Glass and fitting options
- Fixed within the reveal, leaving the original window untouched
- Vertical sliding, horizontal sliding, hinged and lift-out styles
- Colour-matched frames to suit the room
- Locks and catches that open from inside without a key
- Low-E glass for better insulation
- Noise and draught reduction
Fitting in Dunstable and nearby
From the LU6 district we also cover Luton (5 miles) and Leighton Buzzard (6 miles). Survey dates depend on installer availability.
Bedford's Victorian terraces and Luton's long shopping streets sit alongside 1960s to 1990s estates and newer uPVC-glazed developments around Leighton Buzzard and the M1 corridor.
Good candidates for security secondary glazing:
- Period sash windows with original glass
- Offices in historic buildings
- Ground-floor flats in converted townhouses
- Listed homes and buildings in conservation areas
Before the glass is ordered
Listed building consent
Internal secondary glazing is usually seen as reversible, but consent can still be needed. Check with the conservation officer first.
How it opens
Match the opening style to the original window so both can be opened, cleaned and used for ventilation.
Glazing rules in England
Replacing glass in an existing frame
Replacing only the glass or sealed unit in an existing frame is generally treated as a repair in England rather than notifiable building work. Replacing a whole window or door is notifiable and is normally certified through a competent person scheme or approved by building control. Either way, new glass in a critical location should still be safety glass.
Windows needed for escape
Approved Document B expects many habitable rooms in houses, particularly upstairs, to have an escape window with a clear opening of at least 0.33 m², at least 450 mm high and 450 mm wide, with the bottom of the opening no more than 1,100 mm above the floor. Changing the glass does not alter that, but locks, secondary glazing and film must not stop the window opening. Laminated glass is hard to break through, so escape always relies on the window opening.
How it works
- Postcode and a few photos
- On-site survey
- Fixed written price and lead time
- Fit, check and explain
Security secondary glazing in Dunstable: questions
Can you survey in Dunstable and nearby towns?
Yes. Surveys in Dunstable, Luton and Leighton Buzzard are booked around installer availability.
Does secondary glazing reduce noise?
Yes, often noticeably, because of the air gap between the two panes. Laminated glass helps further.
Is secondary glazing safe for escape windows?
It can be, as long as it opens quickly from inside without a key. We design catches and handles for that.
Will secondary glazing cause condensation?
A well-fitted unit usually reduces condensation on the inner pane. Some ventilation of the gap may be needed, which we discuss at the survey.
Security secondary glazing in nearby towns
- Luton5 miles
- Leighton Buzzard6 miles
- Harpenden9 miles
- Berkhamsted9 miles
- Hemel Hempstead10 miles
- Ampthill10 miles
Other glazing in Dunstable
- Security double-glazed units
- Laminated security glass
- Counter and reception security screens
- Patio and bifold door security glass
- Commercial reglazing
- Laminated roof and conservatory glass
Start with a guide price online, then we survey and fix the price in writing.