Flats and apartments · West Sussex
Triple glazing for flats and apartments in Worthing
Looking at flat and apartment triple glazing for a home in Worthing? We survey, quote and fit across West Sussex, and the BN11 postcode district is part of that.

Window replacement for flats, with the consents sorted first. Before replacing windows in a flat, check two things.
Winter light and glass choice in Worthing
On the shortest day, Worthing gets about 7 h 56 min of daylight and the midday sun reaches only about 16° above the horizon. Low winter sun means north-facing rooms here gain little solar heat, which is where triple glazing’s lower heat loss helps most.
Guide prices in Worthing
| Guide | Supply and fit, inc VAT |
|---|---|
| One window medium uPVC window, fitted from inside | £945 – £1,195 |
| 2-bed flat 5 medium windows | £4,595 – £5,695 |
| 2-bed flat, aluminium 5 medium windows | £7,495 – £9,295 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for flats and apartments in England
England requires replacement windows to achieve 1.4 W/m²K, or a Window Energy Rating of band B or better, which good triple glazing passes comfortably. Replacement windows are a controlled fitting. A competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council within 30 days; otherwise a building control body approves it.
Before ordering: Replacing windows on a house is normally permitted development if the new ones look similar. New upper-floor windows in a side wall must be obscure glazed and fixed, or open only above 1.7 m. Flats and maisonettes have no householder permitted development rights, so a change that alters their appearance needs planning permission. An Article 4 direction in a conservation area may mean permission is needed, and listed buildings need listed building consent.
How it works
After the free survey you get a written quote naming the frame system, the glass build-up and the whole-window U-value for every item. Windows are made to order, then fitted, sealed and made good, one opening at a time.
- Every opening measured, including escape and vent needs
- Frames rated for the weight of triple glass
- Old windows removed and taken away
- Each opening closed up the same day
Questions from Worthing
What about tall blocks?
Higher-risk buildings (18 m or 7 storeys and over in England) have extra building safety requirements. Talk to your building’s accountable person first.
Can windows in a flat be fitted from inside?
Often yes, which avoids scaffolding. It depends on the window design and access, checked on survey.
How long does it take to get flat and apartment triple glazing fitted in Worthing?
After the survey, typical manufacture time is 4 to 7 weeks, and most homes are fitted in 1 to 4 days.
Do I need permission for flat and apartment triple glazing in Worthing?
In England, like-for-like replacements on a house are normally permitted development; flats need permission if the change alters their appearance, Article 4 areas may need permission, and listed buildings need listed building consent. Check whether your street is in a conservation area or covered by an Article 4 direction before changing the style.
Nearby
Nearby towns on our list include Portslade (12 km), Littlehampton (12 km), Hove (15 km) and Brighton (17 km).
Other products in Worthing
- uPVC windows
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- Composite front doors
- French doors
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Passivhaus and EnerPHit
Flats and apartments in Worthing: book your free survey
Written quote fixed for the specification, after a free survey. Building Regulations sign-off by a competent person scheme installer or building control, as the law requires in England.
