Security secondary glazing in Harrow

How much should I budget for security secondary glazing in Harrow?

Typical prices for security secondary glazing in Harrow are £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window, supplied and fitted. Use the quote tool for a guide figure, then we survey and confirm a fixed price.

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.

Options for security secondary glazing in Harrow

Fixed within the reveal, leaving the original window untouched
Suits sash, casement and arched openings
Low-E glass for better insulation
Laminated glass in slim aluminium frames
Locks and catches that open from inside without a key
Colour-matched frames to suit the room

Fitting in Harrow and nearby

Harrow is about 10 miles from Central London, the main centre for Greater London. We can survey and fit across the HA1 district and in nearby places such as Wembley and Northolt.

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.

Common uses:

Period sash windows with original glass
Homes on busy roads wanting noise reduction
Offices in historic buildings
Ground-floor flats in converted townhouses

What to think about first

Escape and ventilation

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

Frame colour and sightlines

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

Consents and safety: England

England

Listed buildings and conservation areas

In England, listed building consent from the council may be needed to replace historic glass such as crown or cylinder glass, or to alter glazing bars, sashes and frames. Historic England publishes guidance on traditional windows. Secondary glazing and window film are often easier to agree because they can be removed later, but the council's conservation officer makes the decision.

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 Harrow: questions

Which areas near Harrow do you cover?

We can arrange work in Harrow and in nearby Wembley (2 miles), Northolt (3 miles) and Greenford (4 miles). Dates depend on 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.

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 Harrow

Start with a guide price online, then we survey and fix the price in writing.