What should patio and bifold door security glass cost in Derry?
Our guide range for patio and bifold door security glass in Derry is £354 to £1,074 including VAT (£295 to £895 plus VAT) per pane, including fitting. The survey is free for new installations and your fixed price follows in writing.
Patio and bifold door security glass means fitting large sealed units with a laminated pane into sliding, French or bifolding doors. These doors are usually the biggest glass at the back of the house and out of view, so making the glass hold when it is struck closes one of the easiest routes in.
What goes into patio and bifold door security glass
- Security tape on externally beaded frames
- Low-E, argon and solar control glass options
- Roller, carriage and hinge adjustment after fitting
- Integral blind units replaced like for like where possible
- Anti-lift and lock checks on sliding doors
- Glass lifters and enough installers for heavy panes
Fitting in Derry and nearby
We arrange surveys and fitting in Derry and across the BT48 postcode district. Tell us your postcode and we will offer dates.
Londonderry's listed walled city and riverside offices, Coleraine's university-town centre and the north coast at Portstewart sit alongside the market towns of Magherafelt and Limavady.
Good candidates for patio and bifold door security glass:
- Bifold doors in kitchen extensions
- Doors hidden from the street by fences or hedges
- Ground-floor flats with doors onto terraces
- Sliding patio doors at the back of a house
Before the glass is ordered
Solar control
South-facing doors can overheat. Adding solar control glass at the same time keeps rooms cooler.
Laminated inner or both panes
A laminated inner pane is the usual security upgrade. On very exposed doors both panes can be laminated.
Glazing rules in Northern Ireland
Security rules for new homes
If you are building a new home in Northern Ireland, ask the council's building control service which security requirements apply. In existing homes nothing obliges you to upgrade glass, but laminated glass to BS EN 356 P1A in doors and in windows beside them is a common benchmark taken from guidance in Great Britain.
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.
How it works
- Guide price online or by phone
- Survey in Derry
- Accept the fixed quote
- Fitted by glaziers working under our contract
Patio and bifold door security glass in Derry: questions
Do you cover Strabane as well as Derry?
Yes. As well as Derry, we can arrange work in nearby Strabane. Dates depend on installer availability.
Is patio door glass already safety glass?
It should be, because doors are critical locations. Most is toughened, which is safe but not secure. Adding a laminated pane makes it both.
Will laminated glass make my bifolds harder to open?
Units are slightly heavier. We adjust hinges, rollers and carriages after fitting so the doors run smoothly.
Can you replace just one pane of a bifold?
Yes. Each leaf takes its own unit, so we can upgrade one leaf or all of them.
Patio and bifold door security glass in nearby towns
Other glazing in Derry
- Anti-ram-raid glazing
- Kiosk and booth security glazing
- Security secondary glazing
- Security double-glazed units
- Laminated security glass
- Security glass for doors
Tell us about the glazing and we will come back with a guide price.