County Londonderry · Northern Ireland

Sliding Doors in County Londonderry

Sliding patio doors in County Londonderry give wide garden views through large panes and slim frames, and our glaziers survey your opening before you receive a fixed written quote.

Guide from £1,795
5 towns covered
Postcode areas BT

uPVC patio doors in County Londonderry

Replacing patio doors in the same opening usually takes about a day on site, longer for wide multi-panel systems or where heavy glass needs extra hands or lifting gear. The doors are made to the survey sizes first, and the lead time is confirmed in writing with the quote.

Keep sliding doors running smoothly by vacuuming the bottom track and drainage slots regularly, wiping the tracks with a damp cloth and checking the brush seals. Avoid oil on the track itself, which attracts grit. Rollers can be adjusted when a panel starts to drag or the lock no longer lines up.

Sliding doors can have a raised sill for weather resistance or a low, flush track for near level access between floor and patio. Flush tracks need good drainage outside and some shelter, and on exposed elevations a slightly raised threshold usually keeps water out more reliably.

Lift-and-slide doors raise the panel off its seals when the handle is turned, so it glides easily, then lower it back onto the gaskets when closed. This allows very large, heavy panels with good weather sealing. Standard in-line sliders are lighter, simpler and usually cost less.

Sliding patio doors opening from a living room onto a garden

Towns we cover for sliding doors in County Londonderry

Choose your town for local details, nearby areas and the postcode districts we cover.

What applies in County Londonderry

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.

For replacement doors and windows in Northern Ireland, PAS 24 products are a sensible choice for security.

County Londonderry has its own coastline, so for homes and businesses near the sea, salt air and wind-driven rain are part of the brief. Salt and sand collect in sliding door tracks near the coast, wearing rollers and seals more quickly, so tracks need more frequent cleaning. Stainless running gear, a coating suited to marine exposure and a raised threshold help on exposed elevations facing the sea.

Rural patios are often uneven or sit below the floor, so threshold height, drainage and level tracks need careful planning. Exposed sites benefit from stiffer frames, robust weather seals and laminated glass, as homes may be some distance from neighbours.

Guide prices

Guide prices inc VAT for typical jobs. Remote and island locations are quoted by arrangement. Your written quote fixes the price after measuring.
Typical job	Guide price inc VAT
Aluminium slider, 1800 mm wide	£2,695 – £3,495
Aluminium slider, 3000 mm wide	£3,995 – £5,095
Lift-and-slide, 4000 mm wide	£6,695 – £8,595
uPVC patio door, 1800 mm wide	£1,795 – £2,395

Choosing your sliding doors

uPVC patio doors

A lower-cost in-line sliding door with chunkier frames, available in white, grey and woodgrain foils for standard openings.

Multi-track configuration

Two, three or four tracks so several panels stack behind each other, opening one or both sides of the frame.

Lift-and-slide doors

Panels lift off their seals to glide, then drop to seal tightly when closed; suited to very large, heavy glass panels.

Glass specification

Toughened low-E double glazing as standard, with triple glazing, laminated security glass, acoustic or solar-control glass available.

Sliding Doors in County Londonderry: questions

Can I get sliding doors with a very slim frame?

Yes. Slimline aluminium sliding doors are designed with narrow outer frames and interlocks, and some systems hide part of the frame in the floor, walls or ceiling. Very slim systems need precise, level openings and strong support above, so the survey checks the lintel, floor and walls before recommending one.

How long does it take to install sliding doors?

Replacing a typical set of sliding patio doors takes about a day on site, and large multi-panel or lift-and-slide systems can take longer, especially if lifting equipment is needed. The doors are made to order first, and the manufacturing lead time is confirmed in writing when you accept the quote.

Are sliding doors better than bifold doors?

Neither is better for every home. Sliding doors suit people who want large panes, slim frames and an uninterrupted view when the doors are closed. Bifold doors suit people who want to open almost the full width in summer. Sliding doors also take no space inside or out when opened, which helps on small patios and balconies.

Why is my sliding door so hard to open?

A sliding door usually becomes stiff because of grit in the track, worn or seized rollers, or a panel that has dropped out of adjustment. Cleaning the track often helps, and rollers can sometimes be adjusted or replaced. If the frame has distorted or the panels are very heavy, replacing the doors is often the more lasting fix.

Which parts of County Londonderry do you cover for sliding doors?

We cover the whole of County Londonderry, including Derry/Londonderry, Coleraine, Limavady, Magherafelt and Portstewart, and postcode areas BT. Building rules for sliding doors here follow the regulations for Northern Ireland. Enter your postcode on the quote form and we will confirm cover; then a glazier will arrange a free survey before giving you a written quote.

Other glazing services in County Londonderry

All glazing in County Londonderry · Sliding Patio Doors across the UK

Get a written quote in County Londonderry

Free survey for new glazing, clear guide prices and one point of contact for every glazing job.

Get a guide price 0800 088 6248 WhatsApp