Security secondary glazing in Chelmsford

Security secondary glazing in Chelmsford: what will it cost?

Our guide range for security secondary glazing in Chelmsford 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.

Choices you can make

Colour-matched frames to suit the room
Fixed within the reveal, leaving the original window untouched
Low-E glass for better insulation
Laminated glass in slim aluminium frames
Noise and draught reduction
Suits sash, casement and arched openings

Fitting in Chelmsford and nearby

We can arrange security secondary glazing anywhere in Chelmsford, and in nearby Billericay, Witham and Maldon. Tell us your postcode and we will offer dates.

Essex runs from Chelmsford and Colchester's town-centre retail and Georgian streets to Southend's seafront and large post-war and new-build estates in Basildon and Harlow.

Typical settings for security secondary glazing:

Ground-floor flats in converted townhouses
Period sash windows with original glass
Offices in historic buildings
Listed homes and buildings in conservation areas

Getting the right glass for your building

How it opens

Match the opening style to the original window so both can be opened, cleaned and used for ventilation.

Escape and ventilation

On windows used for escape, the secondary glazing must open quickly from inside without a key or tool.

What the rules say in England

England

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.

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.

How it works

Guide price online or by phone
Survey in Chelmsford
Accept the fixed quote
Fitted by glaziers working under our contract

Security secondary glazing in Chelmsford: questions

Which areas near Chelmsford do you cover?

We can arrange work in Chelmsford and in nearby Billericay (8 miles), Witham (9 miles) and Maldon (9 miles). Dates depend on installer availability.

Can I still open my sash windows?

Yes. Secondary glazing slides, hinges or lifts out so the original window can be opened and cleaned.

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.

Do I need permission for secondary glazing in a listed building?

It depends on the building and the council. Internal secondary glazing usually has less impact than replacement windows, but listed building consent may still be needed. Ask the conservation officer before ordering.

Security secondary glazing in nearby towns

Other glazing in Chelmsford

Tell us about the glazing and we will come back with a guide price.