Streatham · Greater London
Aluminium Windows in Streatham
Want modern, slim-framed windows in Streatham? We can quote for thermally broken aluminium casements, tilt and turn and steel-look designs in the colour of your choice.
- SW16
- SW12
- SE27
- Guide from £925
Slim aluminium windows in Streatham
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.
Upper-floor windows may need to work as escape routes. In England, Approved Document B guidance for an escape window is an unobstructed openable area of at least 0.33 m², at least 450mm high and 450mm wide, and no more than 1100mm from floor to the bottom of the opening.
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.
Security on aluminium windows comes from multi-point locking, internally glazed beads, lockable handles and robust hinges. For easily accessible windows in new homes in England, Approved Document Q expects security to the PAS 24 standard, and specifying the same for ground-floor replacements is a sensible precaution.
What's included
- Survey, measuring and structural check of each opening
- Thermally broken aluminium frames powder coated to order
- Removal and disposal of the existing windows
- Sealed double or triple glazed units to specification

About Streatham for this job
- Postcodes covered
- SW16, SW12, SE27 and the surrounding area, including Clapham, Brixton and Mitcham
- Coast
- Streatham is well inland, around 35 km from the nearest coast, so salt exposure is not usually a factor.
- Daylight and sun
- In Streatham the midwinter sun reaches about 15° above the horizon at noon, with roughly 7.6 hours of daylight, rising to about 62° and 16.4 hours in midsummer. Slim aluminium frames let more daylight through the same opening. Large south or west-facing panes can overheat rooms, so solar-control glass may help, while north-facing rooms benefit from high light-transmission low-E glass that keeps heat in during short winter days.
- Access and setting
- 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.
- Rules in England
- 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.
Guide prices in Streatham
| 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 |
Get a guide price for your size
Replacing windows and doors with similar ones is usually permitted development for houses in England. Flats, listed buildings and homes in conservation areas or covered by an Article 4 direction can need permission, so check with the council first.
Choosing your aluminium windows
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.
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 Streatham: questions
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.
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.
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.
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.
Do you cover Streatham for aluminium windows?
Yes. We can quote for aluminium windows across Streatham and the surrounding Greater London area, including postcode districts SW16, SW12 and SE27, and nearby Clapham, Brixton and Mitcham. Start with your postcode on the quote form and a glazier will arrange a free survey before giving you a written quote.
Get a written quote in Streatham
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.