How Much Do Casement Windows Cost?
Casement windows are the most popular and most affordable window style in the UK, typically costing from around £400 to £950 per window in uPVC, supply and fit. Here are real 2026 guide prices across uPVC, aluminium and timber, plus how to pay less.
Check If You QualifyWhat is a casement window?
A casement window is hinged at the side or top so it opens outwards, like a door. It is the most common window style in the UK and the benchmark for window pricing, because it is straightforward to make and fit.
Casement windows are available in uPVC, aluminium and timber, with double or triple glazing, and in a wide range of colours including white, anthracite grey and woodgrain finishes. Browse our casement windows to see the range.
Casement window prices by material
Guide prices per casement window, supply and fit, double glazed. Subject to a free survey.
| Frame material | Guide price |
|---|---|
| uPVC casement | £400–£950 |
| Aluminium casement | £500–£1,235 |
| Timber casement | £600–£1,615 |
uPVC is the most economical choice. Aluminium adds around 25 to 30 per cent for slim sightlines and a modern finish, while timber adds around 50 to 70 per cent and suits period or conservation-area homes. Upgrading to triple glazing adds around £150 to £300 per window.
Casement window cost by size
Larger and multi-section casements cost more. Guide prices for uPVC double glazing, supply and fit.
| Casement size | Guide price (uPVC) |
|---|---|
| Small single opener | £400–£550 |
| Standard one or two panes | £500–£700 |
| Large two or three panes | £650–£850 |
| Large multi-section casement | £800–£950 |
Size is one of the biggest price factors. A small single-opener sits at the lower end of the range, while a wide multi-section casement with several opening panes sits at the top. A free survey confirms your exact price.
What affects casement window prices
The same casement window can be quoted at very different prices depending on a handful of factors:
- ✓ Frame material (uPVC, aluminium, timber)
- ✓ Window size and number of opening panes
- ✓ Glazing (double or triple)
- ✓ Colour and finish (anthracite, woodgrain)
- ✓ Glass options (low-e, toughened, obscure)
- ✓ Access and any building work
Because every home is different, an accurate price always needs a free survey. Once measured, you get a fixed quote with no surprises.
How to pay less for casement windows
You do not have to pay the full price up front. Many UK homeowners can cut the cost with a double glazing grant or a window replacement grant, and where funding applies you can often spread the cost with nothing to pay up front. Some qualifying homeowners can have their casement windows installed with no upfront cost at all.
Casement window cost: your questions answered
How much does a casement window cost in the UK?
As a guide, a uPVC casement window costs from around £400 to £950 fully fitted. An aluminium casement typically costs around £500 to £1,235, and a timber casement around £600 to £1,615. These are guide prices for supply and fit and are subject to a free survey.
What is a casement window?
A casement window is hinged at the side or top so it opens outwards, like a door. It is the most common and most affordable window style in the UK, available in uPVC, aluminium and timber with double or triple glazing.
Are aluminium or timber casement windows worth the extra cost?
It depends on your priorities. uPVC is the most economical and low-maintenance choice. Aluminium offers slim sightlines and a modern look for around 25 to 30 per cent more, while timber suits period and conservation-area homes for around 50 to 70 per cent more than uPVC.
How much does the size of a casement window affect the price?
Size is one of the biggest factors. A small single-opener costs far less than a large multi-pane casement. As a guide, smaller casements sit at the lower end of the range and larger or multi-section casements at the higher end. A free survey gives you an exact price.
