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South Glamorgan · Wales

Aluminium Windows in South Glamorgan

Planning an extension or renovation in South Glamorgan? We can supply and fit aluminium windows made to your sizes, with dual-colour frames and glass chosen room by room.

  • Guide from £925
  • 4 towns covered
  • Postcode areas CF

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Aluminium windows across South Glamorgan

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.

Modern aluminium window frames contain a thermal break: strips of low-conductivity material, usually polyamide, that separate the inner and outer aluminium. Without it, heat passes straight through the metal. Older aluminium windows made without thermal breaks are a common cause of cold frames and streaming condensation.

Aluminium frames are usually finished with polyester powder coating, baked on at the factory in a choice of RAL colours and in matt, satin or textured finishes. Dual-colour frames are possible, such as anthracite grey outside and white inside, so the windows can suit both the street and the room.

Powder-coated aluminium does not need painting, but it does need cleaning. Wash frames with warm water and a mild detergent a few times a year, rinse, and avoid abrasive pads or solvents. Clean more often near the sea or busy roads, where salt and grime sit on the surface for longer.

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

Towns we cover for aluminium windows in South Glamorgan

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

What applies in South Glamorgan

In Wales, Approved Document N covers safety glazing: safety glass is needed in and around doors and in low-level glazing where people could walk into it.

Listed buildings in Wales need listed building consent for most changes to historic windows; Cadw publishes guidance on looking after traditional windows.

South Glamorgan 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.

Large aluminium units are heavy, so city jobs need planned unloading, parking and sometimes lifting gear or extra hands for upper floors. Flats need freeholder consent and planning permission, and conservation areas often control frame colour and glazing bar patterns.

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 jobGuide 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

Tilt and turn

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

Glass upgrades

Triple glazing, laminated acoustic glass, solar-control coatings or obscure glass, chosen per window to suit the room and elevation.

Flush casement

Sashes sit level with the outer frame for a clean, timber-like look, often chosen for period-style or contemporary homes.

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.

Aluminium Windows in South Glamorgan: questions

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 much do aluminium windows cost?

The cost of aluminium windows depends on the number and size of windows, the profile system, how many sashes open, the colour and finish, the glass and the access. They generally cost more than equivalent uPVC because of the material and factory coating. See the guide prices for typical ranges; the written quote fixes the price for your exact specification.

Do aluminium windows get condensation on the frames?

Modern thermally broken aluminium windows are far less prone to frame condensation than older aluminium windows made without a thermal break. Condensation can still form on any window if a room is humid and poorly ventilated, so trickle vents, extractor fans and sensible heating still matter. Warm-edge spacer bars also help keep the edges of the glass warmer.

Which parts of South Glamorgan do you cover for aluminium windows?

We cover the whole of South Glamorgan, including Cardiff, Barry, Penarth and Llantwit Major, and postcode areas CF. Building rules for aluminium windows here follow the regulations for Wales. 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.

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