Windows
Aluminium windows and doors
- 6–8 weeks from survey to installation
- Own fitters — no subcontracting
- Prices updated 11 October 2026
Live price ranges
Casement window
approx. 1.2 × 1.2 m
Value
REHAU uPVC
£650–£1,100
Contemporary
SMART or AluK aluminium
£1,050–£1,900
Engineered
Schüco aluminium
£1,300–£2,300
Signature slimline
Cortizo Cor Vision
—
A survey confirms the final figure.
Overview
Why aluminium windows and doors?
Aluminium gives you the slimmest frames and the widest choice of colour of any window material. Because it's so strong, the frames can stay narrow while holding large panes of glass — more daylight, cleaner lines, and windows and doors that match.
We fit four aluminium systems in three tiers: SMART and AluK (Contemporary), Schüco (Engineered) and Cortizo (Signature slimline). Every price below is a range for a typical size, installed and including VAT, so you can compare tiers before anyone visits.
Slim sightlines
Narrow frames hold big panes, so you see more view and less frame.
Any colour
White, anthracite, black, any RAL colour, or a different colour inside and out.
Large spans
Strong enough for wide bifolds, sliders and floor-to-ceiling glass.
Low maintenance
A powder-coated finish that doesn't need painting.
One look throughout
Windows, French doors, bifolds, sliders and entrance doors from the same system.
Heritage options
SMART Alitherm Heritage gives a slim steel look for period and conservation-area homes.
Prices by brand tier
What aluminium windows and doors cost
| Typical size, installed, each | ValueREHAU uPVC | ContemporarySMART or AluK aluminium | EngineeredSchüco aluminium | Signature slimlineCortizo Cor Vision |
|---|---|---|---|---|
| Casement windowapprox. 1.2 × 1.2 m | £650–£1,100 | £1,050–£1,900 | £1,300–£2,300 | Not offered in this tier |
| Tilt-and-turn windowapprox. 1.2 × 1.2 m | £800–£1,300 | £1,200–£2,100 | £1,500–£2,600 | Not offered in this tier |
| Bifold doors, 3 m opening3 m wide opening | Not offered in this tier | £4,500–£7,500 | £6,000–£9,500 | £7,000–£11,000 |
| Sliding patio doors, 3 m3 m wide opening | £2,200–£3,800 | £5,000–£8,500 | £6,500–£10,500 | £8,500–£14,000 |
| See your own sizes and options | Price this in Value | Price this in Contemporary | Price this in Engineered | Price this in Signature |
Contemporary
SMART or AluK aluminium
- Casement window£1,050–£1,900
- Tilt-and-turn window£1,200–£2,100
- Bifold doors, 3 m opening£4,500–£7,500
- Sliding patio doors, 3 m£5,000–£8,500
Value
REHAU uPVC
- Casement window£650–£1,100
- Tilt-and-turn window£800–£1,300
- Sliding patio doors, 3 m£2,200–£3,800
Engineered
Schüco aluminium
- Casement window£1,300–£2,300
- Tilt-and-turn window£1,500–£2,600
- Bifold doors, 3 m opening£6,000–£9,500
- Sliding patio doors, 3 m£6,500–£10,500
Signature slimline
Cortizo Cor Vision
- Bifold doors, 3 m opening£7,000–£11,000
- Sliding patio doors, 3 m£8,500–£14,000
Indicative ranges for London and the South East, supplied and installed, including VAT. Updated 11 October 2026. A survey confirms your final price.
Tiers and brands
Which suits your home?
SMART Systems
Heritage, period and conservation-area homes; mid-range contemporary
About SMART SystemsAluK
Contemporary homes, short lead times
About AluKSchüco
High-spec, triple glazing, Passivhaus-grade, large spans
About SchücoCortizo
Signature minimal-frame glazing for architect-led projects
About CortizoStyles and options
Made to your specification
Windows
- Casement
- Tilt-and-turn
- Steel-look heritage (SMART Alitherm Heritage)
- Fixed and feature glazing
Doors
- French doors
- Bifold doors
- Sliding patio and slimline sliders
- Entrance and pivot doors
Glass
- Double or triple glazing
- Acoustic glass
- Solar-control glass
Finishes and extras
- White, anthracite, black or any RAL colour
- Dual colour
- Smart locks
- Integral blinds
- Trickle vents
Good to know
Planning, regulations and timings
Building Regulations and certification
Replacement windows and doors must meet Building Regulations for energy efficiency, safety glass, ventilation and fire escape. Each installation is certified through a competent person scheme such as FENSA, or signed off by building control, and the certificate is yours to keep for when you sell.
Conservation areas and listed buildings
If your home is listed, in a conservation area or covered by an Article 4 direction, changing the look of windows or doors may need planning permission or listed building consent. We flag this at survey and give you the product details your council will ask for.
Survey to installation
Typically 6–8 weeks from survey to installation, agreed with you up front. One named project manager runs your job from survey to sign-off, and our own fitters do the work — we don't subcontract glazing.
Questions
Aluminium windows and doors: your questions answered
How much do aluminium windows cost?
A typical aluminium casement window (approx. 1.2 × 1.2 m) costs £1,050–£1,900 in our Contemporary tier (SMART or AluK) and £1,300–£2,300 in Engineered (Schüco). A whole house of 8–12 windows plus 2 doors in aluminium is typically £16,000–£30,000. Indicative, supplied and installed in London and the South East, including VAT; prices updated 11 October 2026. A survey confirms the final figure.
Are aluminium windows better than uPVC?
Not always — it depends on the look you want and your budget. Aluminium gives slimmer frames, more colours and bigger spans, and our Contemporary aluminium tier is typically 1.6–1.9 times the uPVC price. REHAU uPVC is the best-value way to get A-rated double glazing.
Which aluminium brand should I choose?
Start with the look and budget, then the brand. SMART and AluK (Contemporary) suit most homes; Schüco (Engineered) is for triple glazing, large spans and acoustic performance; Cortizo (Signature) is for near-frameless slimline glazing. The quote builder shows all three side by side.
Can I have aluminium windows in a conservation area?
Often, yes. SMART Alitherm Heritage gives a slim steel look that many period streets suit, but planning permission or listed building consent may still be needed. We flag it at survey and give you the product details your council will ask for.
Do aluminium windows have 0% VAT?
No. Windows, doors and glazing are charged at the standard VAT rate — the 0% VAT relief covers insulation, solar, batteries and heat pumps, not glazing.
Keep exploring
Related products and services
uPVC windows and doors
A-rated REHAU uPVC — the best-value energy-efficient replacement windows.
Casement windows
The classic side- or top-hung window, in uPVC or slim aluminium.
Sash windows
Sliding sash windows for period homes, in REHAU uPVC or SMART Alitherm Heritage.
Brands we install
REHAU, SMART, AluK, Schüco, Cortizo, VELUX, FAKRO and Cambridge Skylights — and the tier each sits in.
Begin your project
Get your price range in under two minutes
Choose your product and brand tier and see a live price range. No obligation, and a survey always confirms the final figure.