How much should I budget for security secondary glazing in Welwyn Garden City?
Our guide range for security secondary glazing in Welwyn Garden City is £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window, including fitting. The survey is free for new installations and your fixed price follows in writing.
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
- Low-E glass for better insulation
- Colour-matched frames to suit the room
- Laminated glass in slim aluminium frames
- Suits sash, casement and arched openings
- Fixed within the reveal, leaving the original window untouched
- Vertical sliding, horizontal sliding, hinged and lift-out styles
Fitting in Welwyn Garden City and nearby
We arrange surveys and fitting in Welwyn Garden City and across the AL8 postcode district, as well as in nearby Hatfield (3 miles) and Hertford (6 miles). Dates depend on installer availability.
Hertfordshire includes the historic centres of St Albans and Hertford, post-war new towns such as Stevenage and Hatfield, and Watford's shops and office parks along the M1.
Common uses:
- Ground-floor flats in converted townhouses
- Offices in historic buildings
- Listed homes and buildings in conservation areas
- Homes on busy roads wanting noise reduction
What to think about first
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.
Consents and safety: 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.
Replacing glass in an existing frame
Replacing only the glass or sealed unit in an existing frame is generally treated as a repair in England rather than notifiable building work. Replacing a whole window or door is notifiable and is normally certified through a competent person scheme or approved by building control. Either way, new glass in a critical location should still be safety glass.
How it works
- Send sizes or use the quote tool
- Free survey at your Welwyn Garden City address
- Fixed price in writing
- Glass made, then fitted
Security secondary glazing in Welwyn Garden City: questions
Do you cover Hatfield as well as Welwyn Garden City?
Yes. As well as Welwyn Garden City, we can arrange surveys in nearby Hatfield, Hertford and St Albans. Dates depend on installer availability.
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.
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 Welwyn Garden City
- Counter and reception security screens
- Security glass for home windows
- Bullet-resistant glass
- Toughened safety glass
- Broken glass replacement
- Blast-resistant glazing
Ready for a price? Use the form or call 0800 088 6248.