Security secondary glazing in Mitcham

Security secondary glazing in Mitcham: what will it cost?

Guide prices for security secondary glazing in Mitcham are £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window for supply and fitting. We confirm a fixed price in writing after a free survey, before any glass is ordered.

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

Vertical sliding, horizontal sliding, hinged and lift-out styles
Suits sash, casement and arched openings
Laminated glass in slim aluminium frames
Noise and draught reduction
Colour-matched frames to suit the room
Locks and catches that open from inside without a key

Fitting in Mitcham and nearby

Surveys in Mitcham (CR4) are booked around installer availability. We also cover nearby Morden (1 mile), Wimbledon (2 miles) and Streatham (2 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.

Typical settings for security secondary glazing:

Homes on busy roads wanting noise reduction
Period sash windows with original glass
Listed homes and buildings in conservation areas
Offices in historic buildings

Getting the right glass for your building

Listed building consent

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

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.

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.

How it works

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

Security secondary glazing in Mitcham: questions

Can you survey in Mitcham and nearby towns?

Yes. Surveys in Mitcham, Morden and Wimbledon are booked around installer availability.

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.

Can I still open my sash windows?

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

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

Other glazing in Mitcham

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