Security secondary glazing in Northallerton

Security secondary glazing in Northallerton: what will it cost?

Guide prices for security secondary glazing in Northallerton 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.

Specification at a glance

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

Fitting in Northallerton and nearby

Whether you are in central Northallerton or at the edge of the DL7 district, we can arrange a survey. Nearby Darlington and Thornaby-on-Tees are covered too.

North Yorkshire includes York's walled city and listed streets, Harrogate's Victorian stone terraces, Middlesbrough's town centre and coastal Scarborough and Whitby.

Typical settings for security secondary glazing:

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

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

Postcode and a few photos
On-site survey
Fixed written price and lead time
Fit, check and explain

Security secondary glazing in Northallerton: questions

Do you cover Darlington as well as Northallerton?

Yes. As well as Northallerton, we can arrange surveys in nearby Darlington, Thornaby-on-Tees and Ripon. 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.

Does secondary glazing reduce noise?

Yes, often noticeably, because of the air gap between the two panes. Laminated glass helps further.

Security secondary glazing in nearby towns

Other glazing in Northallerton

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