Feltham · Greater London
uPVC Windows in Feltham
Landlords and homeowners in Feltham can get a written uPVC window quote that fixes the price for the frames, glass, colour and locks shown.
- TW14
- TW13
- TW4
- Guide from £565
uPVC casement windows in Feltham: what to know
Bay windows need extra care. Some older bays carry load from the wall or roof above, so the glazier checks the support before removal and may fit bay poles or ask for structural advice. Replacing a window in the same opening is different from widening it, which needs a new lintel.
In England, Approved Document L sets the standard for a replacement window in an existing home: a U-value of 1.4 W/m²K or better, or a Window Energy Rating of band B or above. The new window should also be no worse than the one it replaces. The other UK nations set their own figures.
Modern uPVC casements use multi-point espagnolette locks that engage keeps along the frame, internally beaded glass so units cannot be removed from outside, and key-locking handles. PAS 24 is the security standard expected for easily accessible windows in new homes in England, and it is a sensible benchmark for ground-floor replacements.
In England, replacement windows on a house that look similar to the originals usually do not need planning permission. Flats and maisonettes do not have permitted development rights for replacing windows, and listed buildings, conservation areas and homes under an Article 4 direction may need consent, so check before ordering.
Included as standard
- Made-to-measure frames with sealed double glazed units
- Written guarantee terms and advice on building regulations sign-off
- Sealing inside and out, with trims to make good
- Removal and disposal of the old windows

Working in Feltham
- Postcodes covered
- TW14, TW13, TW4 and the surrounding area, including Hanworth, Ashford (Surrey) and Hounslow
- Coast
- Feltham is well inland, around 54 km from the nearest coast, so salt exposure is not usually a factor.
- Daylight and sun
- In Feltham 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. uPVC frames are bulkier than aluminium, so they take a little more glass area from small windows. On south and west elevations, solar-control or neutral low-E glass limits overheating, while north-facing rooms benefit from high light-transmission glass and warm-edge spacers that reduce condensation.
- Access and setting
- In terraced streets and flats, old frames are usually removed and new ones fitted from inside to avoid scaffold. Parking for the van, access through communal areas, leaseholder consent and the lack of permitted development rights for flats all need checking before ordering.
- 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 Feltham
| Typical job | Guide price inc VAT |
|---|---|
| Casement window, 900 × 1050 mm | £565 – £725 |
| Casement window, 1200 × 1200 mm | £665 – £855 |
| Large window, 1800 × 1200 mm | £805 – £995 |
| Anthracite or woodgrain, 1200 × 1200 mm | £785 – £995 |
Get a guide price for your size
Approved Document L sets the minimum energy performance for replacement windows and doors in existing homes in England: a U-value of 1.4 W/m²K, or Window Energy Rating band B for windows; doors can instead meet a Door Set Energy Rating (band B, or band C for doors more than 60% glazed); rooflights need 2.2 W/m²K.
What you can choose
Double or triple glazing
Low-E double glazing suits most homes; triple glazing adds a third pane for lower heat loss and quieter rooms, but units are heavier.
Obscure and acoustic glass
Patterned or satin glass for bathrooms and street-facing rooms, and laminated acoustic glass to reduce traffic noise.
uPVC sliding sash
Vertical sliders that mimic traditional box sashes, using spring balances instead of weights, where planning rules allow uPVC.
uPVC Windows in Feltham: questions
Do new uPVC windows need trickle vents?
In England, usually yes. Approved Document F expects ventilation after window replacement to be no worse than before, which normally means trickle vents in the new frames. Our glaziers record the existing ventilation at survey and specify vents to suit each room. Rules in the other UK nations differ, so the detail is confirmed for your address.
What guarantee comes with new uPVC windows?
Manufacturer guarantees apply to new frames, sealed units and hardware, and the terms are confirmed in writing. Guarantee terms for the installation are set out in writing with your quote, so you know what is covered and for how long before you commit. Keep this paperwork with your building regulations certificate, because buyers' solicitors usually ask for both.
Will fitting new windows damage my plaster or decor?
Some disturbance is normal, but it is usually limited to the edges of each opening. The glazier cuts out the old frame, fits the new one and finishes the inside with trims, sealant or filler. Older frames set deep into plaster may need some plaster repair, and we flag that at survey so it is covered in the quote.
How long does it take to fit uPVC windows?
Most single windows are changed within a day, and a typical house usually takes a few days. Bays, large picture windows and openings that need a tower or scaffold take longer. Manufacturing comes first, because every frame is made to the survey measurements, and the lead time is confirmed with your quote.
Do you cover Feltham for uPVC windows?
Yes. We can quote for uPVC windows across Feltham and the surrounding Greater London area, including postcode districts TW14, TW13 and TW4, and nearby Hanworth, Ashford (Surrey) and Hounslow. 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 Feltham
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.