Window replacement estimate: Glazing Price Index
For supply-only, the median published figure in the Glazing Price Index is 174.50 GBP across 4 figures from the sources' own pages (range 135.96 to 202 GBP), read 12 October 2026.
- 4136 to 363
- 1363 to 591
- 591 to 818
- 818 to 1,045
- 31,045 to 1,273
- 11,273 to 1,500
Bands
| Bucket | Value |
|---|---|
| 136 to 363 | 4 figures |
| 363 to 591 | 1 figure |
| 591 to 818 | 0 figures |
| 818 to 1,045 | 0 figures |
| 1,045 to 1,273 | 3 figures |
| 1,273 to 1,500 | 1 figure |
9 of the 35 named sources read in full publish a figure; 26 publish none, read 12 October 2026.
By material and supply-only vs fitted
| Breakdown | Median | Range | Sources |
|---|---|---|---|
| materialcomposite door | 1,150GBP | 1,100 to 1,200GBP | 2 |
| materialaluminium casement | 1,120GBP | 1,120 to 1,120GBP | 1 |
| materialtimber sash | 1,500GBP | 1,500 to 1,500GBP | 1 |
| materialuPVC casement | 500GBP | 500 to 500GBP | 1 |
| supply-only vs fittedsupply-only | 174.5GBP | 135.96 to 202GBP | 4 |
Every figure, with its source
One row per published figure: the figure as the source's own page publishes it, the page, and the day it was read. A figure that is not on a page we read is not on this one.
| Source | Figure | Breakdown | Read |
|---|---|---|---|
| Scott James Windows sash window cost | 1,500GBP | timber sash | 2026-10-12 |
| GFD Homes composite door prices | 1,200GBP | composite door | 2026-10-12 |
| Everest aluminium window prices | 1,120GBP | aluminium casement | 2026-10-12 |
| Very Secure Doors composite door prices | 1,100GBP | composite door | 2026-10-12 |
| Colin's Sash Windows: replacement window costs | 500GBP | uPVC casement | 2026-10-12 |
| House of Windows uPVC casement windows | 202GBP | supply-only | 2026-10-12 |
| Just Doors UK DIY windows | 199GBP | supply-only | 2026-10-12 |
| UK Trade Windows & Doors standard PVCu windows | 150GBP | supply-only | 2026-10-12 |
| Doors Windows Stairs white uPVC windows | 135.96GBP | supply-only | 2026-10-12 |
The sentence each figure was read from (9)
- Scott James Windows sash window cost, read 2026-10-12:
Fully installed softwood replacement windows start at around £1,500 each.
- GFD Homes composite door prices, read 2026-10-12:
Prices range from £1,200 to £3,500, depending on door specifications.
- Everest aluminium window prices, read 2026-10-12:
The price for aluminium windows in 2026 The cost of an aluminium casement window is between £1,120 to £4,500 per window, depending on the size, specific requirements, number of windows ordered and complexity of installation.
- Very Secure Doors composite door prices, read 2026-10-12:
GRP Composite Doors — From £1,100 Fitted
- Colin's Sash Windows: replacement window costs, read 2026-10-12:
Installed price £500 – £800
- House of Windows uPVC casement windows, read 2026-10-12:
from £202
- Just Doors UK DIY windows, read 2026-10-12:
From £199
- UK Trade Windows & Doors standard PVCu windows, read 2026-10-12:
From £150
- Doors Windows Stairs white uPVC windows, read 2026-10-12:
From £135.96
Read in full, publishes no figure
26 named sources were read in full on the dates shown and print no usable figure. They are counted, never filled in.
- Just Value Doors uPVC windows, read 2026-10-12: every candidate on the page was refused
- House of Windows supply-only shop, read 2026-10-12: every candidate on the page was refused
- Quickslide uPVC casement windows, read 2026-10-12: every candidate on the page was refused
- Window Price Online, read 2026-10-12: every candidate on the page was refused
- EasyFit Window, read 2026-09-12: read in full and no accepted figure on the page
- Double Glazing Units cost guide, read 2026-09-12: every candidate on the page was refused
- Gloucester Windows and Doors replacement double glazed glass, read 2026-09-12: every candidate on the page was refused
- Aaran Glass average price of a replacement double-glazed unit, read 2026-09-12: every candidate on the page was refused
- Emerald Doors bifold door prices, read 2026-09-12: every candidate on the page was refused
- Door Supplies Online composite door prices, read 2026-10-12: every candidate on the page was refused
- Horizon Windows and Doors bifold cost, read 2026-10-12: every candidate on the page was refused
- The Great Big Window Company cost of installing bifold doors, read 2026-10-12: every candidate on the page was refused
- MyJobQuote bifold door costs, read 2026-10-12: every candidate on the page was refused
- MyBuilder double glazing cost guide, read 2026-10-12: every candidate on the page was refused
- Just Value Doors aluminium windows, read 2026-10-12: every candidate on the page was refused
- Everest types of windows, read 2026-10-12: every candidate on the page was refused
- Safestyle windows, read 2026-10-12: every candidate on the page was refused
- Colin's Sash Windows: sash window costs, read 2026-10-12: every candidate on the page was refused
- Ideal Glass: cost to change window glass, read 2026-10-12: every candidate on the page was refused
- Restoration Glazing double glazing repair cost, read 2026-10-12: every candidate on the page was refused
- Unique Glazing: how much do aluminium windows cost, read 2026-10-12: every candidate on the page was refused
- Pro Calculator uPVC windows price calculator, read 2026-09-12: every candidate on the page was refused
- Tailored Quote new windows cost, read 2026-09-12: every candidate on the page was refused
- Klar Windows double glazed window styles, read 2026-10-12: every candidate on the page was refused
- REHAU types of double glazing, read 2026-10-12: read in full and no accepted figure on the page
- ExpertSure sash window costs, read 2026-10-12: every candidate on the page was refused
Methodology
Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2).
9 of the 35 named sources that could be read published a usable figure; 26 published none and are recorded as not published, never filled in; 2 could not be read (blocked, dead or unreachable) and count nowhere.
The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in GBP (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 346 candidate sentence(s) were refused by a reviewer with the reason recorded.
The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): the median, minimum and maximum PUBLISHED price per window and per door across every supplier and installer that publishes one, split by material (uPVC, aluminium, timber, composite), style (casement, sash, bow, bifold, French), size band and basis (supply-only, supplied and fitted); the FITTED PREMIUM computed as the difference between the two populations, and the share of the trade that publishes any price at all - a number no single supplier can publish because each publishes only its own basis
346 candidate sentences on these pages were refused by a reviewer; each refusal and its reason is recorded in the review ledger.
Sources (37)
- Just Value Doors uPVC windows(the publisher's own terms; quoted for reporting and comment)
- Just Doors UK DIY windows(the publisher's own terms; quoted for reporting and comment)
- UK Trade Windows & Doors standard PVCu windows(the publisher's own terms; quoted for reporting and comment)
- House of Windows uPVC casement windows(the publisher's own terms; quoted for reporting and comment)
- House of Windows supply-only shop(the publisher's own terms; quoted for reporting and comment)
- Quickslide uPVC casement windows(the publisher's own terms; quoted for reporting and comment)
- Doors Windows Stairs white uPVC windows(the publisher's own terms; quoted for reporting and comment)
- Window Price Online(the publisher's own terms; quoted for reporting and comment)
- EasyFit Window(the publisher's own terms; quoted for reporting and comment)
- Double Glazing Units cost guide(the publisher's own terms; quoted for reporting and comment)
- Gloucester Windows and Doors replacement double glazed glass(the publisher's own terms; quoted for reporting and comment)
- Aaran Glass average price of a replacement double-glazed unit(the publisher's own terms; quoted for reporting and comment)
- Emerald Doors bifold door prices(the publisher's own terms; quoted for reporting and comment)
- Very Secure Doors composite door prices(the publisher's own terms; quoted for reporting and comment)
- GFD Homes composite door prices(the publisher's own terms; quoted for reporting and comment)
- Door Supplies Online composite door prices(the publisher's own terms; quoted for reporting and comment)
- Horizon Windows and Doors bifold cost(the publisher's own terms; quoted for reporting and comment)
- The Great Big Window Company cost of installing bifold doors(the publisher's own terms; quoted for reporting and comment)
- MyJobQuote bifold door costs(the publisher's own terms; quoted for reporting and comment)
- Checkatrade double glazing cost guide(the publisher's own terms; quoted for reporting and comment)
- MyBuilder double glazing cost guide(the publisher's own terms; quoted for reporting and comment)
- Just Value Doors aluminium windows(the publisher's own terms; quoted for reporting and comment)
- Everest aluminium window prices(the publisher's own terms; quoted for reporting and comment)
- Everest types of windows(the publisher's own terms; quoted for reporting and comment)
- Safestyle windows(the publisher's own terms; quoted for reporting and comment)
- Colin's Sash Windows: sash window costs(the publisher's own terms; quoted for reporting and comment)
- Colin's Sash Windows: replacement window costs(the publisher's own terms; quoted for reporting and comment)
- Scott James Windows sash window cost(the publisher's own terms; quoted for reporting and comment)
- Ideal Glass: cost to change window glass(the publisher's own terms; quoted for reporting and comment)
- Restoration Glazing double glazing repair cost(the publisher's own terms; quoted for reporting and comment)
- Unique Glazing: how much do aluminium windows cost(the publisher's own terms; quoted for reporting and comment)
- Pro Calculator uPVC windows price calculator(the publisher's own terms; quoted for reporting and comment)
- Tailored Quote new windows cost(the publisher's own terms; quoted for reporting and comment)
- Klar Windows double glazed window styles(the publisher's own terms; quoted for reporting and comment)
- REHAU types of double glazing(the publisher's own terms; quoted for reporting and comment)
- ExpertSure sash window costs(the publisher's own terms; quoted for reporting and comment)
- fensa.org.uk(the publisher's own terms; quoted for reporting and comment)
Cite or embed this figure
Cite or embed this figure
For supply-only, the median published figure in the Glazing Price Index is 174.50 GBP across 4 figures from the sources' own pages (range 135.96 to 202 GBP), read 12 October 2026.
9 of the 35 named sources read in full publish a figure; 26 publish none, read 12 October 2026.
Glazing Price Index, material composite door: median 1,150 GBP across 2 sources, read 12 October 2026.
Glazing Price Index, material aluminium casement: median 1,120 GBP across 1 source, read 12 October 2026.
Glazing Price Index, material timber sash: median 1,500 GBP across 1 source, read 12 October 2026.
Glazing Price Index, material uPVC casement: median 500 GBP across 1 source, read 12 October 2026.
Glazing Price Index, supply-only vs fitted supply-only: median 174.50 GBP across 4 sources, read 12 October 2026.
Cite as: "Roofing Quotes UK Glazing Price Index", updated 2026-10-19, https://roofingquotesuk.com/datasets/glazing-price-index/.
Download the CSV (9 rows, computed 2026-10-19)