How much should I budget for security secondary glazing in Lisburn?
Expect £594 to £1,794 including VAT (£495 to £1,495 plus VAT) per window for security secondary glazing in Lisburn. The written quote names the glass makeup, the price and the lead time before you commit.
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
- Noise and draught reduction
- Low-E glass for better insulation
- Locks and catches that open from inside without a key
- Colour-matched frames to suit the room
- Fixed within the reveal, leaving the original window untouched
- Laminated glass in slim aluminium frames
Fitting in Lisburn and nearby
We arrange surveys and fitting in Lisburn and across the BT28 postcode district, as well as in nearby Belfast (8 miles) and Newtownabbey (12 miles). Dates depend on installer availability.
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.
Common uses:
- Period sash windows with original glass
- Ground-floor flats in converted townhouses
- Listed homes and buildings in conservation areas
- Offices in historic buildings
What to think about first
How it opens
Match the opening style to the original window so both can be opened, cleaned and used for ventilation.
Listed building consent
Internal secondary glazing is usually seen as reversible, but consent can still be needed. Check with the conservation officer first.
Consents and safety: 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.
Windows needed for escape
Fire safety in new building work in Northern Ireland is covered by the Building Regulations (Northern Ireland) 2012 and Technical Booklet E. Where a room relies on a window for escape, locks, secondary glazing and film must leave it able to open. Laminated glass is not designed to be broken out.
How it works
- Guide price online or by phone
- Survey in Lisburn
- Accept the fixed quote
- Fitted by glaziers working under our contract
Security secondary glazing in Lisburn: questions
Do you cover Belfast as well as Lisburn?
Yes. As well as Lisburn, we can arrange surveys in nearby Belfast, Newtownabbey and Lurgan. Dates depend on installer availability.
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.
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.
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 Lisburn
- Shopfront security glass
- Security window film
- Laminated glass retrofit
- Security glazed doors and screens
- Security double-glazed units
- Broken glass replacement
Tell us about the glazing and we will come back with a guide price.