Security secondary glazing in Belfast

What should security secondary glazing cost in Belfast?

As a guide, allow £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window for security secondary glazing in Belfast, supplied and fitted. Size, glass makeup, access and frame condition move the price, which is confirmed in writing after the free survey.

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 you can specify

Fixed within the reveal, leaving the original window untouched
Vertical sliding, horizontal sliding, hinged and lift-out styles
Locks and catches that open from inside without a key
Low-E glass for better insulation
Laminated glass in slim aluminium frames
Colour-matched frames to suit the room

Fitting in Belfast and nearby

We arrange surveys and fitting across Belfast and the BT1 postcode district, and in nearby Newtownabbey (4 miles), Holywood (5 miles) and Lisburn.

County Antrim includes much of Belfast's Victorian commercial centre, Titanic Quarter offices and suburban high streets, plus Lisburn, Ballymena and the towns of the north coast.

Good candidates for security secondary glazing:

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

Before the glass is ordered

Escape and ventilation

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

Listed building consent

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

Glazing rules in Northern Ireland

Northern Ireland

Replacing glass in an existing frame

Building regulations in Northern Ireland are administered by the eleven councils' building control services. Replacing only the glass in an existing frame is generally treated as a repair, while replacing whole windows or doors can be controlled work, so check with building control first. New glass in a critical location should be safety glass under Part V.

Planning permission

Planning in Northern Ireland is handled by the eleven councils, which decide whether a new or altered shopfront needs permission; changing the glass in an existing frame usually does not. Bollards or barriers on a public footway need consent from the Department for Infrastructure's roads service.

How it works

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

Security secondary glazing in Belfast: questions

Do you cover Newtownabbey as well as Belfast?

Yes. As well as Belfast, we can arrange surveys in nearby Newtownabbey, Holywood and Lisburn. Dates depend on 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.

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.

Security secondary glazing in nearby towns

Other glazing in Belfast

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