New Windows Cost

How much do new windows cost?

When budgeting for new windows there are a lot of different variables to take into consideration new windows costs, it’s wise to research how just much new windows cost and be aware of the factors that contribute towards the price.

What is the average price for new windows, is one of the most common questions that we get asked, the quick answer is if you are considering new quality windows and installation from a reputable company then you should expect to pay between £450 to £3,000 per window, which is dependent upon chosen options.

For the longer and more accurate answer, please have a read of the following guide to find out exactly how much new windows cost.

We will also look at the true cost of ‘Cheaper installations’ and how they can affect the value of your home.

new window costs
Best Glaze installed this 5 piece bay window, composite door and side panel, patio slider to the rear and whole house of windows.

Beware cheap new window costs online

As we previously stated, when working out exactly how much new windows cost there are many variables that should be taken into consideration:

Window Frame Style
Window Frame Size
Glazing type (Double or Triple)
Window Frame Material (uPVC, Aluminium, Timber)
The Amount Of Windows To Be Replaced
Scaffold Requirements
Planning Permission Requirements

Online Quotes Can Be Decieving

There are lots in ‘Instant Quote’ websites over the internet that claim to work out the cost of a new window, the prices often appear to be cheap initially, however costs can soon start to climb upon installation when things like scaffolding is required.

Beware Cowboy Installers

We repair lots of windows for customers that have had a cheap installation only to find that the company has no legitimate warranty in place to cover issues further down the line. Often windows are so poorly installed that they require re-fitting at the expense of the customer.

Not All Windows Are Made Equal

Cheap window frames are often made from low quality uPVC which in itself can cause issues. Add a lack of reinforcing to the mix and you have a recipe for disaster. Cheap quality windows are prone to warping especially when they do not have any reinforcement. The old adage of ‘buy cheap, buy twice’ is certainly true when you are thinking about replacement windows.

The only true way to work out the cost of new windows is to get a full quote from a reputable company that take into account all the factors that may affect the final price.

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We installed these Rosewood uPVC windows, french doors and composite doors. All windows had heritage fillets to finish.
new windows cost
Rosewood windows installed in Launceston cornwall
Barn conversion, rosewood patio doors launceston, cornwall

Why don’t you show prices for new windows on your website?

Another question we get asked a lot is, ‘why don’t you show prices on your website’? The answer is simple, our windows are offered on a per customers basis to meet the exacting needs of each customer individually.

We offer so many quality frame options for our customers to choose from that listing all the variables for so every kind of window choice, style, size and colour would be a difficult task. Pricing is exact and not based on an average which then changes later down the line.

Anthracite grey windows, doors installation in cornwall
Anthracite grey windows, anthracite grey composite doors, all installed in this beautiful home in Cornwall

Other companies show average window prices on their websites

Some companies offer windows that come in preset sizes with limited design options and frame colours. Windows like these are standard sizes and don’t not factor in problems that can occur when fitting the replacement windows, this often leads to poor installation and finish.

Often when windows of standard sizes are installed, they are being fitted to openings that are not a standard size. It is then up to the installer to make up the difference in sizes by using methods that will inevitably cause problems.

When windows are not measured to fit the openings within the correct tolerances they will often be fitted to tight which causes issues with expansion and contraction, frames crack, openers get stuck and glass can even shatter. When windows are too small for the openings the gap is often filled with expanding foam. This will eventually lead to damp and draughts.

We do not provide stock sized windows, all of our products are designed to meet your exacting needs.

3 piece bay, anthracite grey cladding in cornwall
Three piece bay installation, with anthracite grey cladding in Cornwall

Always refuse prices that are offered without viewing the property

Any reuptable window installer will insist on viewing the property before giving an accurate price. It is not good practice for a window installer to offer a price on windows without first seeing the property to calculate all the variables that will affect the price.

The average price for new windows 2020

All things considered we have compiled a guide for the average cost of new windows in 2020

This guide is based on average price ranges for new windows and as such, you should not take them as the cost to replace windows in your home.

Casement windows average price

A casement window is the most popular window that we supply and install in Cornwall. Low maintenance and economical, openers usually hinged at the side or the top, Often featuring a single or a pair of openers per frame. uPVC Casement windows are the best value for money style of window you can buy.

The average price for a QUALITY casement window ranges anywhere from £450 up to £1,200.

What does it cost to replace sash windows?

Sash windows are more expensive than a Casement window. They are less common than a casement as they are mostly found in period properties. A sash window usually has two sliding panels that slide up and down (or side to side) past each other. Replacement of a sash window could be as much as 50% more expensive than replacing a casement, they are more labour intensive, usually require more finishing and the frame itself uses more materials.

The cost to replace sash windows is usually a lot higher than that of a casement window.

How much do uPVC bay windows cost to replace?

Bay windows are structures that are actually built on the walls of the property, if you are looking to build a bay window from scratch on your home, you will need to get planning permission first. The bay window is made up of three or more windows to create the structure. Bay windows are the most expensive to replace becuase of the amount of frames and the labour required.

A uPVC bay window will cost 100% more than a casement window on average.

Window stylesThe average cost of new windows (per window)
Casement windows£450- £1,230
Sash windows50% > more than casement windows
Bay windows100% > more than casement windows

The average price of aluminium windows

Aluminium frames have regained popularity largely because modern Aluminium windows are strong, slimline and available in a huge range of colours . Aluminium windows create a slimmer more contemporary look compared to its uPVC counterpart.

The price for aluminium windows is on average 25% more than a uPVC window

The average price of timber windows

Timber windows are highly desirable and can add significant value to your home. Wooden windows not only look and feel authentic but they are also an investment. Timber windows are usually required for period properties along with properties in conservation areas.

The average price for timber windows is 50% more than uPVC.

Window Frame materialThe average price for new windows
uPVC Window£450-1,200
Aluminium Window25% > more than uPVC Windows
Wood Window50% > more than uPVC Windows

Are Anthracite Grey windows more expensive?

Anthracite grey windows and doors are certainly on trend right now because anthracite grey adds a real contemporary look to your home. uPVC, Aluminium, and Timber windows can all be manufactured in Anthracite Grey, however, you should expect to pay at least 10% more for grey windows than a standard white.

What else can increase the cost of windows?

  • Most homes have window openings that are not a standard size
    Listed buildings with certain restrictions
    Non-standard shaped frames
    Non-standard window openers
Frame colourThe average price for new windows
White uPVC Windows£450-1,200
Grey uPVC Windows10% > more than white windows
Wood grain uPVC Windows10-15% more than white windows

Beware cheap double glazing

Another adage which is true when considering replacement double glazing is ‘If something looks too good to be true, then it probably is‘. Replacing the windows in your home is not cheap, but taking the cheapest quote is not neccaserily going to be the cheapest option in the long run. Cheap windows will always end up causing you problems costing you more money and valuable time rectifying the problems.

Your home is the biggest investment that you will make, fitting cheap windows can actually devalue your property. Not only do low-quality windows knock value off of your home, but poor installation and sloppy finishing also detract from the value.

Over the years we have been to some ‘Cheap window’ installations to rectify work from installations that ranged from slap dash to dangerous.

Poor quality windows leave you at risk from:

  • Damaged frames or double glazed units from sloppy workmanship
    Poorly opertaing windows and doors
    Frames that do not fit openings and have poor fitting
    Damp and draughts
  • Warped windows caused by low quality windows
  • Excessive expanding foam to poor fitting windows
  • Poor or insufficient finishing outside resulting in leaks
  • Double glazing desiccant
  • Condensation between the glass
  • Faded frames
    Poor welded joints resulting in cracking
  • Poor aesthetics that age quickly
    Bad finishing inside, poor trimming, bad sealing, wrong sealants used

Some Cheap Installations We Have Witnessed

What your cost of windows quote should include

Whilst shopping around for new windows cost from different window suppliers be sure to compare like-for-like windows.

The prices that are listed on ‘instant quote’ websites will not take into account all of the variables that we have highlighted in this guide.

The window supplier that you decide on to install new windows in your home should provide you will a full quote that details everything that is included in the price. The new windows cost, installation cost, and of course any warranty that they offer.

To avoid any surprise costs during your window, door or conservatory installation, make sure you get a proper quote and not an estimate, there is a massive difference between the two.

What to look for from your cost of windows quote:

  • A full survey of your property carried out by a certified Surveyor
  • Actual sizes of the frames
    Actual styles of the frames
    Actual colours of the frames
  • The materials that will be used on the installation
  • Glass to be used in each frame
  • The energy rating of the glass
  • Window furniture
  • External window cills & internal window boards
  • Disposables to be used: Trims, sealants screws and fixings etc
  • Removal and disposal of your old window frames and glass
  • Scaffolding if required
    Planning if required
    Cut down works prices
    Plastering or rendering

Only choose an installer that is registered with FENSA, Certass, or other competency schemes.


How much do new windows cost?

The average price for new windows ranges between £450 to £3,000 per window, depending on style, material, amount of windows and other options.

The most economical replacement window is a white uPVC casement window, costing between £450 to £1,200 depending on the size of the window and the number of units being replaced, the more windows are being replaced the better the price per unit.

New windows cost depends on many factors, but the real cost is the impact a poor installation due to bad fitting windows, or a slap dash job.

When considering new windows cost, consider a firm that uses employed installers, most firms use self employed installers that are paid per frame that they install, this can lead to poor quality installations as they are often rushed.