County Londonderry · Northern Ireland

Aluminium Windows in County Londonderry

Homeowners and landlords in County Londonderry can get a written quote for aluminium windows that fixes the price for the frames, finish, glass and hardware shown.

Guide from £925
5 towns covered
Postcode areas BT

Slim aluminium windows for homes and businesses in County Londonderry

Steel-look aluminium windows reproduce the slim frames and glazing bars of traditional metal windows while adding a thermal break and double glazing. They are often chosen to replace failing original steel windows in 1930s houses, though conservation areas and listed buildings may need consent for the change.

Aluminium is strong enough to hold large, heavy glass units in narrow frames, so sightlines are slimmer than uPVC of the same size. That means more glass and more daylight from the same opening, which suits modern extensions, wide picture windows and slim replacements for old steel windows.

Aluminium windows are fabricated to order: profiles are cut, coated, assembled and glazed to the survey sizes. Lead times can be longer than for standard white uPVC, particularly for special colours or steel-look designs, and the expected timescale is confirmed in writing when you accept the quote.

The price of aluminium windows depends on the size and number of frames, the profile system, opening sashes, colour and finish, glass specification and access. Dual colours, special finishes, glazing bars and triple glazing add cost. See the guide prices for typical ranges, and the written quote fixes your figure.

White rendered house with slim grey aluminium windows and a large picture window

Towns we cover for aluminium windows 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.

Listed buildings in Northern Ireland need listed building consent for most changes to historic windows.

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 air attacks metal finishes, so aluminium windows near the coast need a coating and pretreatment suited to marine exposure, stainless or protected hardware, and more frequent washing. Check that the coating terms allow for a coastal site before ordering.

Rural homes often mix old stone walls with modern extensions, and aluminium suits both when profiles are chosen carefully. Irregular openings are measured individually, and exposed sites benefit from systems with high weather ratings and well-sealed joints against driving rain.

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
Casement window, 900 × 1050 mm	£925 – £1,195
Casement window, 1200 × 1200 mm	£1,095 – £1,395
Large window, 1800 × 1500 mm	£1,495 – £1,995
Slimline heritage style, 1200 × 1200 mm	£1,295 – £1,695

Choosing your aluminium windows

Steel-look windows

Very slim frames with glazing bars that mimic traditional metal windows, adding thermal performance and double glazing to the classic look.

Dual-colour powder coat

A different colour inside and out, such as anthracite grey outside with white inside, from a wide range of RAL colours and textures.

Tilt and turn

Inward-opening sashes that tilt for secure ventilation or swing open for cleaning and escape, useful for flats and high floors.

Casement windows

Side-hung, top-hung or fixed sashes in slim aluminium frames, suiting most houses and extensions, with flush or stepped sash designs.

Aluminium Windows in County Londonderry: questions

What colours can aluminium windows be?

Aluminium windows can be powder coated in almost any RAL colour, in matt, satin, gloss or textured finishes, and many systems offer a different colour on each side. Anthracite grey, black and white are common choices, but heritage greens, creams and bronze tones are available too. Special colours can extend the manufacturing lead time, which is confirmed with the quote.

How long does it take to install aluminium windows?

Most single windows are fitted within a day, and a typical house takes a few days on site depending on the number of windows and the access. The longer part is manufacturing, because frames are cut, coated and glazed to the survey sizes. The expected lead time is confirmed in writing when you accept the quote.

Are aluminium windows better than uPVC?

Neither is better for every home; they suit different priorities. Aluminium gives slimmer frames, larger glass areas, a hard-wearing powder-coated finish and a wide colour choice. uPVC usually costs less and has chunkier frames. Both can meet the energy standard for replacement windows when specified correctly, so compare the certified ratings, the look you want and the guide prices.

How do I look after powder-coated aluminium windows?

Clean powder-coated aluminium windows with warm water and a mild, non-abrasive detergent a few times a year, then rinse and dry. Avoid scouring pads, solvents and pressure washers close to the seals. Keep drainage slots clear and put a little light oil on hinges and locking points. Near the coast, more frequent washing removes salt deposits.

Which parts of County Londonderry do you cover for aluminium windows?

We cover the whole of County Londonderry, including Derry/Londonderry, Coleraine, Limavady, Magherafelt and Portstewart, and postcode areas BT. Building rules for aluminium windows 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 · Aluminium Windows across the UK

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