Devon · England
Aluminium Windows in Devon
If your windows in Devon are faded, draughty or hard to lock, we can survey them and quote for slim, low-maintenance aluminium replacements.
- Guide from £925
- 9 towns covered
- Postcode areas EX, PL, TQ
Replacement aluminium windows across Devon
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.
In England, a replacement window in an existing home should achieve a U-value of 1.4 W/m²K or better, or a Window Energy Rating of band B, under Approved Document L. Thermally broken aluminium with low-E double glazing can meet this; ask for the certified whole-window figure, not just the glass value.
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.
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.

Towns we cover for aluminium windows in Devon
Choose your town for local details, nearby areas and the postcode districts we cover.
What applies in Devon
Approved Document K requires safety glass in critical locations in England: glazing in doors and in side panels within 300 mm of a door, up to 1500 mm above floor level, and any glazing in walls or partitions up to 800 mm above floor level.
Approved Document F covers ventilation. Replacing windows should not leave a room with worse background ventilation than before, which is why replacement windows often include trickle vents.
Devon 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
| 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
Casement windows
Side-hung, top-hung or fixed sashes in slim aluminium frames, suiting most houses and extensions, with flush or stepped sash designs.
Steel-look windows
Very slim frames with glazing bars that mimic traditional metal windows, adding thermal performance and double glazing to the classic look.
Glass upgrades
Triple glazing, laminated acoustic glass, solar-control coatings or obscure glass, chosen per window to suit the room and elevation.
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 Devon: questions
What guarantee do aluminium windows come with?
Manufacturer guarantees apply to the frames, powder coating, hardware and sealed units, and the terms are confirmed in writing. Coating cover often depends on the site environment and on regular cleaning, so read the conditions. Guarantee terms for the installation are set out in writing with your quote, before you agree to go ahead.
Are aluminium windows secure?
Aluminium windows can be very secure, because the metal is strong and the frames carry multi-point locks, internal glazing beads and lockable handles. For easily accessible windows in new homes in England, Approved Document Q expects PAS 24 security. Asking for windows tested to that standard is a good benchmark when replacing ground-floor windows in an existing home.
Do I need permission to replace windows with aluminium?
In England, replacing windows on a house with ones of similar appearance usually does not need planning permission, but changing the material or style can matter. Flats and maisonettes lack permitted development rights for windows, and listed buildings, conservation areas and Article 4 directions can require consent. Building regulations apply to replacement windows across the UK, with different detail in each nation.
Can aluminium windows replace original steel windows?
Yes, steel-look aluminium windows are designed for this. They copy the slim frames and glazing bars of old metal windows while adding double glazing and a thermal break. Original steel frames are often set into the masonry, so removal can disturb render or plaster, and the survey checks this. Listed buildings and conservation areas may need consent first.
Which parts of Devon do you cover for aluminium windows?
We cover the whole of Devon, including Plymouth, Exeter, Paignton, Torquay and Newton Abbot, and postcode areas EX, PL, TQ. Building rules for aluminium windows here follow the regulations for England. 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 Devon
- Replacement Glass in Devon
- Misted Glass Repair in Devon
- Emergency Glazing in Devon
- Safety Glass in Devon
- Window Repairs in Devon
- Window Film in Devon
- uPVC Windows in Devon
- Sash Windows in Devon
- Composite Doors in Devon
- Bifold Doors in Devon
- Sliding Doors in Devon
- Secondary Glazing in Devon
- Roof Lanterns in Devon
- Glass Balustrades in Devon
- Frameless Glass in Devon
- Shower Screens in Devon
- Glass Splashbacks in Devon
- Bespoke Mirrors in Devon
- Glass Roofs in Devon
- Shopfront Glazing in Devon
- Curtain Walling in Devon
- Glass Partitions in Devon
- Property Glazing in Devon
Get a written quote in Devon
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.