What affects the cost?
Frame material, opening style, glazing, size, access and the number of windows influence the installed cost.
- uPVC, aluminium or timber frames
- Window size and opening type
- Double or triple glazing
- Scaffolding and access
- Making good around openings
- Number of units
Typical cost breakdown
Regional planning examples
The examples below apply our published modelling factor to the same national benchmark. They are not claimed as observed city-wide average quotes.
Sources used for this guide
Double Glazing Costs in the UK in 2026
Published / checked: May 2026
Used for: Replacement window ranges by window type and whole-house double glazing benchmarks
Frequently asked questions
Is a whole-house replacement cheaper per window?
It can be, because survey, delivery and installation overheads are spread across more units, but the saving depends on specification and access.
Related costs
Home insulation
UK loft and cavity wall insulation costs by property type, material and insulated area.
£650–£1,200 loft / £30–£65 per m² cavity foamView guide →Cost guideDouble glazed doors
Typical UK prices for double-glazed front, French, patio and bifold doors.
£600–£700 front door / £950–£1,175 French doorsView guide →Cost guideHouse renovation
Typical UK whole-house renovation costs, contingency, labour and the main factors that change a refurbishment budget.
£43,530–£110,350 for a 3-bed houseView guide →