Aluminium windows in London, supplied and fitted
These are the aluminium windows London homeowners ask us for most: casement and tilt and turn on Smart Alitherm 400, made to measure and fitted by our team across the capital, the M25 and the towns just outside it.
- We supply and fit, so you deal with one company
- Lead time given with your quote, from order
- 10-year installation guarantee
10-year installation guarantee
On every job we supply and fit.
Supplied and fitted by our team
We supply and fit, so one company answers for the job.
Smart Systems aluminium
Profiles tested to PAS 24 by Smart.
Hayes showroom
Unit 17, UB4 0LE. Mon to Fri, 8am to 5pm.
Which aluminium windows suit your house?
Most houses mix opening types room by room. Here is how the main choices compare.
Aluminium windows
Casement and tilt and turn on Smart Alitherm 400. Slim frames that suit period and modern houses.
Heritage windows
The slim steel look with glazing bars, for 1930s and period homes. Heritage windows
French doors
A pair of glazed doors on the same Alitherm 400 system, so frames and colours match. French doors
What people worry about, answered plainly
“My old windows are draughty and fogging, and I want them all done at once.”
We survey every opening, order the whole house together and fit each window to the same standard. Rough sizes and a few photos are enough for a first quote.
“Won't aluminium feel cold or look commercial on a house?”
Modern aluminium windows are double glazed, and slim frames in white, black or grey look at home on Victorian terraces and new builds alike. We can talk through what looks right on your street.
“I don't know whether casement or tilt and turn suits each room.”
Casements suit most rooms. Tilt and turn makes upstairs glass easy to clean from inside. We go through it room by room at the survey.
“I want one company that measures properly and turns up.”
We take the exact sizes ourselves at a final site survey, then our team fits and adjusts every sash before we leave. One company answers for the whole job.
Rough sizes and a photo of the opening are enough.
We aim to reply the same working day.
Aluminium casement windows and tilt and turn: how they open
The opening type decides how a window airs the room, how you clean it and how it looks. These are the choices we go through at the survey.
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1. Casement windows
Hinged at the side or the top and opening outwards. The most common style in British houses, at home on Victorian terraces, 1930s semis and new builds.
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2. Tilt and turn windows
Turn the handle one way and the top tilts in for air. Turn it the other way and the whole sash swings in, so you can clean the outside from inside.
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3. Opening and fixed panes
Opening and fixed panes can share one frame, so you only pay for opening sashes where you need them.
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4. Vents and escape hinges
Trickle vents where a room needs background ventilation, escape hinges where a window serves as a fire escape. We point both out at the survey.
Glass and hardware are chosen to suit the room, the aspect and how much noise or sun you want to keep out.
Aluminium windows installation, done by one team
More light, slimmer frames
Aluminium holds large panes in narrow frames.
Measured by us
Each window made to the exact opening at the final survey.
Building Regulations covered
Trickle vents and escape hinges where they are required.
10-year installation guarantee
On the work our team does.
Smart Alitherm 400 aluminium windows, in the colour you want
Our main system
Smart Alitherm 400
From Smart Architectural Aluminium, a British aluminium systems company. Casement and tilt and turn windows with slim sightlines, and matching French doors on the same system.
For the steel look
Alitherm Heritage
Slim frames and glazing bars for houses that had steel windows. We cover it on our heritage windows page.
Powder-coated finish
White, black or grey
- White
- Black
- Grey
Any other colour to order, adding 6 to 8 weeks. New doors too? Tell us at the start so everything matches.
We cover all of London, everywhere inside the M25 and towns just outside it, including Croydon, Guildford, Hayes, Reading and Slough. See the areas we cover.
Our aluminium windows in London homes
See all projects- Job photo to come
Our project in Croydon - Job photo to come
Our project in Croydon - Job photo to come
Our project in Croydon - Job photo to come
Our project in Croydon
Aluminium windows fitting, from your sizes to fitted
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Tell us what you need
Call, WhatsApp or use the quote form. Let us know how many windows, rough sizes and the style you like. Photos help. We aim to reply the same working day.
A few minutes
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Rough quote
We price from your measurements. If you would rather not measure, we send someone out to estimate.
Aim: same working day
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Final site survey
When you are happy with the quote, we survey every opening and take the exact sizes the windows are made to.
One visit
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Order
You pay a 50% deposit and we place the order. We confirm the lead time at that point, as it depends on our availability. Special colours add 6 to 8 weeks.
Lead time given with your quote
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Installation
The balance is due before delivery. Our installers take out the old windows, fit the new ones and check every sash opens, closes and locks properly.
10-year installation guarantee
Aluminium windows give a house slimmer frames, more glass and a finish that does not need painting. We supply and fit aluminium windows across London, working from our base in Hayes and covering everywhere inside the M25 plus nearby towns such as Watford, Reading, Slough and Guildford. Our aluminium window installers measure, fit and check every window, and each installation carries our 10-year installation guarantee.
Aluminium windows London homeowners choose
Most of the windows we fit are for homeowners replacing tired timber or uPVC, or adding new windows to an extension or loft. Aluminium suits both. It is strong enough to hold large panes in slim frames, so slimline aluminium windows let in more light than a chunky frame of the same size, and it keeps its colour without painting.
We also fit aluminium windows for developers and main contractors on new builds. If that is you, see our commercial aluminium windows page.
Smart Alitherm 400 and other systems
Our main system is Smart Alitherm 400, from Smart Architectural Aluminium, a British aluminium systems company. Alitherm 400 covers casement and tilt and turn windows with slim sightlines, and the same system makes matching French doors. When people search for smart aluminium windows, this is usually what they mean.
If you have been quoted for Cortizo windows, send us the specification and we will tell you whether we can supply that range or match it on Alitherm 400. For older houses where you want the look of slim steel windows, we fit Alitherm Heritage; see our heritage aluminium windows page.
Replacing sash windows
If your house has sash windows, tell us what you have and send a few photos. We will talk you through the aluminium options that keep the character of the front of the house, including slim casements laid out to echo the original sash pattern, and confirm what we can supply for your windows before you commit to anything.
Building Regulations, ventilation and security
Replacement windows have to meet Building Regulations. In practice that means trickle vents where a room needs background ventilation and escape hinges on windows that serve as a fire escape. We specify both where they are required and point them out at the survey.
On security, Smart tests its systems to PAS 24, the UK security standard for windows and doors, and the frames are assembled the same way. Good locks and hardware complete the picture.
Supply only on request
Aluminium windows supply only is available if you already have an installer. Supply and fit remains our main service. If you choose supply only and give us your final sizes, we ask you to sign them off before we place the order.
Aluminium windows near me
If you are searching for aluminium windows near me anywhere in London or around the M25, send us the number of windows, rough sizes and a few photos through the quote form or on WhatsApp. We aim to reply the same working day, Monday to Friday, 8am to 5pm. Many window jobs are done alongside new aluminium bifold doors or an aluminium front door, and ordering together keeps the colour and finish consistent.
Aluminium window questions, answered
Not sure about something else? Send what you have and ask in the notes. We answer it with your quote.
Who fits aluminium windows in London?
Our team fits aluminium windows across London, inside the M25 and in surrounding towns such as Watford, Reading, Slough and Guildford. We are based in Hayes. We supply the windows, survey every opening, fit them and guarantee the installation for 10 years, so you deal with one company from the first quote to the last window.
How much do aluminium windows cost?
The price depends on how many windows you need, their sizes, the opening type, the colour, the glass and the hardware. Access and the condition of the existing openings also play a part. We do not publish prices, because every house is different. Send us the number of windows and rough sizes and we will quote for your actual job.
Should I choose casement or tilt and turn windows?
Casement windows are hinged at the side or top and open outwards. They suit most British houses and look right on period and modern homes. Tilt and turn windows open inwards, either tilting at the top for air or swinging fully open, which makes upstairs glass easy to clean from inside. Many homes mix the two.
What is Smart Alitherm 400?
Smart Alitherm 400 is an aluminium window system from Smart Architectural Aluminium, a British aluminium systems company. It covers casement and tilt and turn windows with slim frames, and the same system is used for French doors. It is the system we fit most often for homeowners.
How long do aluminium windows take from order?
We confirm the lead time for your windows when the order is placed, because it depends on the size of the job and our availability. A special powder-coat colour adds 6 to 8 weeks. Before ordering we do a final site survey so each window is made to the exact opening.
Do your windows come with trickle vents?
Trickle vents and escape hinges are fitted where Building Regulations call for them, for example where a room needs background ventilation or an upstairs window has to work as a fire escape. We point these out at the survey so you know which windows need them before anything is ordered.
Are aluminium windows secure?
Aluminium windows are strong and hard to force. Smart tests its window systems to PAS 24, the UK security standard for windows and doors, and the frames are assembled the same way. Multi-point locks and good hardware do the rest, and we can talk you through the options for ground-floor rooms.
Can I buy aluminium windows supply only?
Supply only is available on request if you already have an installer. Supply and fit is our main service and the one we recommend, because we then answer for the sizes and the fitting as well as the windows. If you give us your final sizes, we ask you to sign them off before we order.
Often fitted alongside aluminium windows
See every product- Heritage windowsPeriod homes and extensions that want the slim-bar, Crittall-style look, made in aluminium.More about heritage windows
- Bifold doorsOpening a whole back wall to the garden, so the kitchen and patio become one space in summer. Usually about 10 working days from order, depending on availability.More about bifold doors
- Front doorsA strong, secure entrance that sets the look of the house from the street. Usually 4 to 6 weeks from order, depending on availability.More about front doors
- French doorsA pair of glazed doors that open wide onto the garden, matching your new windows.More about French doors