Security secondary glazing in Barnet

What is the price of security secondary glazing in Barnet?

Expect £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window for security secondary glazing in Barnet. The written quote names the glass makeup, the price and the lead time before you commit.

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.

What goes into security secondary glazing

Laminated glass in slim aluminium frames
Colour-matched frames to suit the room
Vertical sliding, horizontal sliding, hinged and lift-out styles
Noise and draught reduction
Suits sash, casement and arched openings
Fixed within the reveal, leaving the original window untouched

Fitting in Barnet and nearby

Surveys in Barnet (EN5) are booked around installer availability. We also cover nearby Potters Bar (3 miles), Borehamwood (3 miles) and Finchley (3 miles).

Greater London has every kind of glazing, from Georgian sashes and Victorian bays in conservation areas to high-street shopfronts, office curtain walling and new-build flats.

This glazing suits:

Listed homes and buildings in conservation areas
Ground-floor flats in converted townhouses
Homes on busy roads wanting noise reduction
Period sash windows with original glass

Questions we will ask at the survey

Listed building consent

Internal secondary glazing is usually seen as reversible, but consent can still be needed. Check with the conservation officer first.

Frame colour and sightlines

Slim frames that line up with the existing meeting rails make the secondary glazing almost invisible from outside.

Building regulations and safety in England

England

Planning permission

Changing the glass in an existing window or shopfront does not usually need planning permission, because the building looks much the same afterwards. A new or altered shopfront, or security features added to the outside of a building, may need planning permission from the council. Bollards or barriers on the pavement need the highway authority's consent, which is normally the council.

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

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

Security secondary glazing in Barnet: questions

Can you survey in Barnet and nearby towns?

Yes. Surveys in Barnet, Potters Bar and Borehamwood 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.

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.

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 Barnet

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