Lisburn · County Antrim
Bifold Doors in Lisburn
Old patio doors in Lisburn that leak, stick or let in draughts can be replaced with bifold doors that fold away to open up the room in summer.
- BT27
- BT28
- BT17
- Guide from £3,595
Lisburn: bifold doors
Bifold door panels have wider frames where they meet than a sliding door, because each panel needs its own frame and hinges. A five-panel set shows four vertical sightlines when closed. If the view matters more than a fully open wall, a sliding door may suit better, so compare both.
The price of bifold doors depends on overall width and height, the number of panels, material and profile system, colour, glass specification, threshold type and the condition of the opening. Wide or very tall sets and triple glazing add cost. See the guide prices for typical ranges; the written quote fixes your figure.
Aluminium is the usual material for bifold doors because its strength allows slim, stiff panels that hold heavy double or triple glazed units without distorting. uPVC bifolds cost less but have bulkier frames and suit smaller openings. Engineered timber bifolds offer a natural finish but need periodic re-coating.
Security on bifold doors comes from multi-point locks on the traffic door, shoot bolts top and bottom on the folding panels, internally glazed beads, anti-lift track design and hinges that cannot be removed from outside. Ask whether the system has been tested to PAS 24 and fit an anti-snap cylinder.
What's included
- Toughened or laminated safety glass to every panel
- Survey of the opening, support above and floor levels
- Fitting, levelling, adjusting and sealing the frame
- Removal and disposal of any existing doors
About Lisburn for this job
- Postcodes covered
- BT27, BT28, BT17 and the surrounding area, including Carryduff, Belfast and Castlereagh
- Coast
- Lisburn sits roughly 12 km from the nearest coastline, close enough that exposure on open or high ground is worth considering. Salt deposits gather in bifold tracks and on rollers, so coastal sets need more frequent cleaning, stainless or protected running gear, and a coating suited to marine exposure. Wind-driven rain makes a raised threshold or good drainage especially important on exposed elevations.
- Daylight and sun
- In Lisburn the midwinter sun reaches about 12° above the horizon at noon, with roughly 7.0 hours of daylight, rising to about 59° and 17.0 hours in midsummer. A wide bifold opening on a south or west-facing wall brings in strong sun and can overheat a room, so solar-control glass or integral blinds may help. North-facing bifolds benefit from high light-transmission low-E glass to make the most of winter daylight.
- Access and setting
- Long, heavy bifold panels need planned access through the house or a side passage, and parking close by for unloading. In terraces and flats, check permitted development rights, freeholder consent and conservation area rules before ordering.
- Rules in Northern Ireland
- Technical Booklet V covers safety glazing in Northern Ireland, including glass in and around doors and low-level glazing where people could walk into it.
Guide prices in Lisburn
| Typical job | Guide price inc VAT |
|---|---|
| Aluminium bifold, 2400 mm wide | £4,295 – £5,495 |
| Aluminium bifold, 3000 mm wide | £5,095 – £6,595 |
| Aluminium bifold, 4800 mm wide | £7,495 – £9,595 |
| uPVC bifold, 3000 mm wide | £3,595 – £4,595 |
Get a guide price for your size
For replacement doors and windows in Northern Ireland, PAS 24 products are a sensible choice for security.
Options to choose between
Aluminium bifolds
Slim, stiff thermally broken panels that carry large glass units, powder coated in a wide range of colours and finishes.
uPVC bifolds
A lower-cost option with bulkier frames, suited to smaller openings with fewer panels, available in white, grey and woodgrain foils.
Low or flush threshold
A low-profile track for near level access between inside and out, paired with drainage outside and some shelter.
Bifold Doors in Lisburn: questions
Should bifold doors open inwards or outwards?
Outward-opening bifold doors are more common because the stacked panels sit outside and leave the room clear. Inward opening suits balconies, raised decks or tight patios where outward panels would block the space. The direction also affects weather performance and furniture layout, so it is decided at survey with the room plan in mind.
Are bifold doors secure?
Good bifold doors are secure when the traffic door has a multi-point lock and anti-snap cylinder, the other panels have shoot bolts top and bottom, the glass is internally beaded and the hinges and track resist lifting. Ask whether the system has been tested to PAS 24, and consider laminated glass for ground-floor doors.
Do bifold doors leak or let in draughts?
Well-made bifold doors fitted level and square should keep out wind and rain, but they rely on accurate installation, a sound lintel and working drainage. Leaks usually come from blocked track drainage, a flush threshold on an exposed elevation or panels that have dropped out of adjustment. Keeping the tracks clean prevents most problems.
Bifold or sliding doors: which should I choose?
Bifold doors suit you if you want almost the whole opening clear in summer, because the panels fold and stack to the side. Sliding doors suit you if you want the fewest frames and the widest view when closed, because large panels glide past each other. Many people decide by how often they will fully open the doors.
Do you cover Lisburn for bifold doors?
Yes. We can quote for bifold doors across Lisburn and the surrounding County Antrim area, including postcode districts BT27, BT28 and BT17, and nearby Carryduff, Belfast and Castlereagh. Start with your postcode on the quote form and a glazier will arrange a free survey before giving you a written quote.
Get a written quote in Lisburn
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.