Whole-house replacement · England
Whole-house triple glazing in Northamptonshire
From Northampton to Daventry, we arrange whole-house triple glazing for homes across Northamptonshire, with every quote fixed for the specification shown.
One survey, one fitting team, one matched look. Whole-house triple glazing means replacing every window, and usually the external doors, in one job.
Guide prices across Northamptonshire
2-bed terrace
5 windows + front door
£5,695 – £7,195inc VAT · £4,745 – £5,995 ex VAT
- White uPVC, triple glazed
- All old frames removed and taken away
- One fitting team, usually 1 to 2 days
3-bed semi
9 windows + front door
£9,395 – £11,795inc VAT · £7,830 – £9,830 ex VAT
- White uPVC, triple glazed
- All old frames removed and taken away
- Usually 2 to 3 days on site
4-bed detached
12 windows + front door + French doors
£13,595 – £16,995inc VAT · £11,330 – £14,160 ex VAT
- White uPVC, triple glazed
- All old frames removed and taken away
- Usually 3 to 4 days on site
Guide prices, supply and fit. The written quote after your survey fixes the price for the specification shown; anything extra is agreed with you first.
Towns in Northamptonshire
Rules in England
The rules for replacement windows in England are set by Approved Document L (2021 edition, with 2023 amendments): 1.4 W/m²K, or a Window Energy Rating of band B or better. 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
Will I need scaffolding?
Most two-storey homes can be done from ladders or towers. Where scaffolding is needed, it is quoted separately.
How much does it cost to triple glaze a 3-bed semi?
Our guide is £9,395 to £11,795 for 9 uPVC windows and a front door, fitted and inc VAT. UK quotes typically range from about £6,500 to £11,000 for windows only.
Do I need to move out?
No. We work room by room and make each opening weathertight the same day.
Do you cover all of Northamptonshire?
We arrange surveys and fitting across Northamptonshire.
Do I need permission for whole-house triple glazing in England?
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.
Whole-house replacement in nearby areas of England
- Rutland
- Leicestershire
- Bedfordshire
- Warwickshire
- Cambridgeshire
- Buckinghamshire
- Oxfordshire
- Hertfordshire
- West Midlands
- Nottinghamshire
Other products in Northamptonshire
- 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
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
Whole-house replacement across Northamptonshire
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.