uPVC Double Glazed Windows

uPVC windows are the most popular type of double glazing in the UK.

Their affordability, low maintenance and 20 year average lifespan make them an attractive option.

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uPVC Windows

uPVC window

uPVC windows (also known as PVCu or rigid PVC windows) are the most popular type of double glazing in the UK. Encased in a plastic frame that comes in a range of styles and colours, uPVC windows are therefore a good option if you have a modern home or want to buy affordable and low maintenance double glazing.

uPVC windows are made up of two panes of glass with a small gap of air between them. This gap creates a vacuum which stops cold air from getting into your home and hot air from escaping, keeping your home warm and insulated. The two panes of glass also minimise the amount of noise that enters your home from outside and increase the toughness of your windows, making your property quieter and more secure.


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uPVC Sash Windows

uPVC Sash Window

Sash windows are a popular choice among homeowners with historic, period looking homes. Although sash windows are often made of wood, modern uPVC sash windows are able to retain the same level of elegance as the traditional timber frame due to the range of colours and textures that uPVC can be made in. For example, wood effect (or traditional-looking) uPVC is one of the most popular styles of uPVC sash window, owing to its natural-looking woodgrain finish.

Below you can see the most common styles of uPVC sash windows offered by leading window installation companies. Some uPVC sash windows also include period features such as Georgian bars, to achieve a truly traditional look.

upvc sash window styles

The table below shows the leading uPVC double glazed sash windows which have been endorsed by the Energy Saving Trust for their energy efficiency.

Window Company
Sash Window Name
Energy Efficiency
Masterframe Window
Bygone Chamfered Sash Window
A-Rated
Anglian
Anglian PVCu Vertical Sliding Sash
A-Rated
Anglian
Timber Tilt & Slide Sash
A-Rated
Tradesmith Ltd
Bevelled Standard / Flush Sash
A-Rated
Safestyle
Safestyle Sliding Sash Window
A-rated
Quickslide
Quickslide Sash Window A+
A+ Rated


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uPVC Casement Windows

uPVC casement windows

uPVC casement windows are the most popular type of window in the UK, owing to their simplicity and suitability for a range different property styles. uPVC casement windows also tend to have a higher energy efficiency than uPVC sash windows, meaning they keep your home warmer and increase the amount of money you save on your energy bills.

While there are hundreds of window companies offering uPVC casement windows, only a handful have been endorsed by The Energy Saving Trust. These uPVC windows are shown in the table below:

Window Company
Product Name
Energy Efficiency
A and B Glass
A and B Glass Casement
A+ Rated
Anglian
Anglian PVCU Casement
A+ Rated
CMS Window Systems
CMS Double Glazed Enviro Casement
A Rated
Everest
Everest Foiled Fully Reinforced Casement
A Rated
Duraflex
Duraflex Techniglass
A Rated
Safestyle
Eco Diamond Window
A Rated
Zenith
Eco Therm Casement
A Rated


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uPVC Bay Windows

As one of the most beautiful styles of window, uPVC bay windows are a popular option for homeowners. Bay windows - or bow windows as they are called when they are more rounded - offer more natural light in your home and panoramic views. They also provide more space as they project outward from the house. Bay windows are typically made up of a central window and two side windows.

uPVC bay windows are often either casement or sash windows designed to fit your bay window. They are often also available in traditional-looking uPVC - you can learn more about this below.


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Traditional-Looking uPVC Windows

Unfortunately the temptation to opt for low cost, low quality white plastic uPVC proves too much for some households. This has caused many people to wrongly believe that uPVC windows always look cheap. To combat this, many leading installers offer traditional-looking uPVC windows which look more like natural timber frame windows. This type of uPVC is often referred to as wood-effect uPVC or woodgrain uPVC.

The advantage of traditional-looking uPVC windows is that they retain the aesthetic appeal of traditional wooden windows whilst combining all the huge benefits of modern, innovative uPVC windows. Wood effect uPVC windows are therefore a great option for historic properties or those within a conservation area.

The table below shows the leading providers of traditional-looking uPVC windows:

Window Company
Name of Traditional uPVC Range
Safestyle
Heritage Windows
Everest
Conservation Range
Anglian
Wood Effect uPVC
A & B Glass
Timber Effect uPVC
Masterframe Window
Vintage Collection


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How Much will it Cost?

uPVC double glazed windows are currently the cheapest type of double glazing. They are available in a range of styles, including casement and sash. Here is an example of the average cost of uPVC double glazing according to the type of property that you live in:

Number of Windows
Average Cost of Casement uPVC Windows
Average Cost of Sash uPVC Windows
4 windows
£1,400 - £1,650
£2,380 - £3,180
7 windows
£2,450 - £2,760
£3,650 - £5,150
9 windows
£3,150 - £3,450
£4,360 - £6,580
12 Windows
£4,205 - £4,680
£6,205 - £7,530
15 windows
£5,255 - £5,780
£7,210 - £9,355


It’s important to note that costs will be higher if you have a larger home and require more windows. Also, costs tend to increase when you require more openings per window.

You might also be interested in:

How much does double glazing cost? and How much do uPVC roof windows cost?


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What Colours are uPVC Windows available In?

Despite often being associated with the colour white, uPVC windows are in fact available in a wide range of colours. Whilst white frames are the cheapest colour to choose, opting for a different colour will not add too much to the overall price of your windows. The exact colours available do vary from company to company, but most window installers do offer cream, grey, brown, oak and black uPVC as standard. Some even offer dual colour uPVC, in which you can have a coloured frame on the outside and a white frame on the inside.


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uPVC Windows made to Measure

It is important that you opt for a uPVC window company that make bespoke windows specifically for your home. This will ensure that your windows fit perfectly. Made to measure double glazing will keep out draughts and will not move or rattle in windy conditions. They will also make your home more energy efficient and secure. The uPVC window companies listed below all offer made to measure windows.


Who offers uPVC Windows? What are the Leading Companies?

Installer
uPVC windows
Wooden windows
Aluminium windows
Everest
Yes
Yes
Yes
Safestyle
Yes
No
No
Anglian
Yes
Yes
Yes
Zenith
Yes
No
No
Britelite
Yes
No
Yes
Crystal Windows
Yes
No
No
Manchester Window Factory
Yes
Yes
Yes
Weather Seal
Yes
No
No


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What are the Advantages and Disadvantages of uPVC Windows?

Advantages include that uPVC double glazing is:

  • • low cost
  • • durable
  • • a good insulator
  • • lightweight
  • • likely to save you money on your energy bills
  • • able to reduce noise from outside
  • • low maintenance
  • • weather proof
  • • fairly recyclable
  • • highly energy efficient
  • • helpful in making your home more secure
  • • available in a range of designs and styles


Disadvantages of uPVC double glazing includes that they:

  • • usually come with white frames
  • • get dirty quickly
  • • require regular cleaning
  • • are not the most visually pleasing windows
  • • don’t use natural materials
  • • are manufactured using a lot of energy and many chemical processes
  • • tend to appeal less to modern house buyers
  • • can be difficult to repair
  • • tend to come with a 10 year warranty only
  • • can discolour if not cleaned regularly
  • • can crack when exposed to sunlight over a long time
  • • are less environmentally friendly
  • • can’t be used to replace windows on a listed building
  • • will add less value to your home than wooden double glazing
  • • have a relatively short life expectancy of 20 years
  • • look out of place on an older style house


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What are the Alternatives to uPVC Windows?

Double glazed windows are predominantly available with frames made from: uPVC, timer and aluminium. There are advantages and disadvantages to all three. For example, many house buyers tend to prefer wooden framed double glazed windows, because they are more visually appealing and can add more value to your property. However, wooden double glazing can be up to 3 times more expensive than uPVC and require regular maintenance work. In contrast, aluminium frames are very modern and require no maintenance, but are the most expensive kind of double glazing.

Find out more about the best kind of double glazing here.


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What do I need to know about Warranties for uPVC Windows?

Leading double glazing manufacturers and fitters should provide a warranty or guarantee for when you buy your uPVC windows from them. Although uPVC double glazing tends to last around 20 years, most double glazing companies offer a 10 year warranty. This means that if any of your uPVC windows need to be replaced or repaired after the warranty expires, you will have to pay for this yourself.

Before buying your windows, always compare quotes from a few suppliers and ask whether quotes include a warranty. Always compare the length of each warranty to ensure you’re getting the best deal.


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