When it comes to home improvements, replacing windows is a big investment that can boost the looks, energy efficiency and value of your property. In the UK, the cost of new windows varies greatly depending on the type of window, materials and installation. Knowing these variables will help you make an informed decision that’s cost effective and quality.
Window Installation Costs
Window installation is a big part of home maintenance as it affects energy efficiency, insulation and comfort. A single window replacement in the UK can cost between £240 to £2,400. This big range is due to the different types, sizes and materials of windows.
For example, a double glazed window can reduce noise and improve insulation, double glazed uPVC windows in a 3 bedroom home (8-11 windows) can cost between £1,200 to £12,400.
How Style Affects Cost
The style of a window plays a big part in determining replacement window prices. Homeowners have many styles to choose from, each with its own price point:
Casement Windows: One of the most common and cheapest in the UK. Casement windows are hinged on the side and open outwards, versatile and good ventilation. They’re often chosen for their cost and ease of use.
Sash Windows: Suitable for period properties, sash windows are more expensive due to the complex mechanism and traditional look. They’re found in Georgian, Victorian and Edwardian homes and valued for their aesthetic and functionality.
Bay and Bow Windows: These styles protrude from the home, creating space and panoramic views. Bay windows are 3 or more windows joined together at an angle, bow windows are 4 or more windows in a curved arrangement. Both are more expensive due to the extra materials and installation.
Tilt and Turn Windows: Modern windows that can tilt in for ventilation or open fully like a casement window. Popular in urban areas where space is limited. The sophisticated mechanism and modern design make these windows more costly.
Double Hung Windows: A traditional and functional option, double-hung windows have two sashes that slide vertically. Both sashes can be opened, air can flow through the top and bottom, and ventilation is good. They are slightly more expensive than single-hung windows, but the extra functionality and low maintenance make double-hung windows popular.
Sliding Windows: Simple and efficient, sliding windows have 1 or more sashes that slide horizontally. Good ventilation and easy to use. Sliding windows are available in many materials, uPVC is the cheapest. Upgraded versions with double glazing can improve energy efficiency and security.
Window Prices & What to Consider
When calculating window replacement costs, there’s more to it than just the style. Here are the other factors to consider:
- Frame Material: The material of the window frame can affect both the cost and lifespan of the windows. uPVC, timber and aluminium are common materials. Aluminium windows are durable, modern and energy efficient. They have thinner frames and require minimal maintenance but are more expensive than other materials.
- Glass Type: The quality and type of glass used in your windows also affects the price. Double glazing is standard in the UK due to its insulation properties but you may also consider triple glazing for extra energy efficiency and noise reduction.
- Energy Efficiency: Windows with higher energy efficiency ratings are more expensive upfront but will save you money in the long run. Look for windows with low emissivity (low-E) glass and gas filled panes like argon, krypton or xenon which improves insulation.
How Window Orientation Affects Costs & Energy Efficiency
The direction your windows face impacts how much sunlight and natural heat they get which can impact your heating and cooling costs.
North facing windows for example get minimal direct sunlight which keeps your home cooler in summer but can mean higher heating costs in winter. To reduce heat loss in colder months consider double or triple glazing which improves insulation. Low emissivity (low-E) glass can also reflect heat back into the room and overall energy efficiency. Double glazing can also improve security and reduce energy bills, so it’s worth the investment.
South facing windows get the most sunlight throughout the day so are good for capturing natural heat in winter and reducing the need for artificial heating. But in summer, they can overheat. Solar control glass or external shading can help manage the excess heat.
East and west facing windows which get the sun at different times of the day also need to be considered. East facing windows provide warmth in the morning and west facing windows can cause late afternoon overheating so you need to choose glazing that balances light and heat.
Glass Types
The type of glass in your windows is key to their overall performance in terms of insulation, security and energy efficiency. Double glazing is the most common in the UK and consists of two panes of glass with an insulating space filled with gas, usually argon.
This is suitable for most households as it balances cost with energy efficiency. When considering double glazing make sure you know how much the new windows will cost including installation and any financial aids.
If you want better performance low emissivity (low-E) glass is the way to go. This glass has a microscopic coating that reflects heat back into the room and reduces energy loss. The type of gas between the panes can also improve insulation. Argon is the standard but Krypton and Xenon gases are better performers due to their higher density but more expensive.
Triple Glazing Windows vs Double Glazed Windows
When choosing between double and triple glazing, you need to consider your home’s specific needs. Triple glazing is better for insulation and noise reduction, so it is good for colder climates or noisy areas. It has three panes of glass with two insulating layers of gas and better thermal performance. But the extra benefits come at a higher cost.
Double glazing is a solid balance of cost and efficiency and is suitable for most UK homes. It reduces heat loss and outside noise and is a popular choice for both new installations and replacements. The decision between the two should be based on your home’s energy needs and the local environment.
What are the Cheapest Materials for New Window Frames?
The material of your window frame is one of the most significant cost factors:
- uPVC (Unplasticised Polyvinyl Chloride): This is the cheapest and most common material for window frames in the UK. uPVC frames are durable, low maintenance and have good insulation. But they may not have the same lifespan or look as more expensive materials like timber.
- Timber: Timber windows (also known as wooden windows) are the most expensive option but have the most aesthetic appeal especially for period properties. They need regular maintenance but can last for decades if looked after so are worth the investment for long term homeowners. The traditional look and value added of timber windows make them a premium choice even though more expensive than uPVC.
- Aluminium: Aluminium frames are the middle ground option, durable, modern look and low maintenance. More expensive than uPVC but generally cheaper than timber. Aluminium frames are popular in contemporary homes for their strength and slim profiles.
uPVC Window Prices for Different Window Styles
uPVC windows are popular for their affordability and durability but prices vary. The quality of the uPVC material is a key factor—higher grade uPVC has better insulation and UV resistance but more expensive upfront but longer life and better efficiency.
The manufacturing process also affects the price. Advanced techniques that improve the window’s strength and finish can increase production costs. Custom-sized windows or those with special features like integrated blinds or decorative glass are more expensive than standard ones.
Market demand and regional trends can also affect the price. In areas where energy efficiency is top priority double or triple glazed uPVC windows are in high demand and prices will be higher. In areas with lower demand prices will be more competitive.
Custom Windows: Are They Worth the Extra Cost?
Custom windows offer a bespoke solution for homeowners who want to match their design style and the unique dimensions of their home. While these windows are more expensive, the benefits can often justify the extra cost.
One of the biggest advantages of custom windows is the perfect fit. Unlike standard-sized windows, custom ones are made to fit your window openings exactly so there are no gaps that can cause drafts and energy loss. This perfect fit improves insulation and can reduce energy bills in the long run, offsetting the initial investment.
Besides functionality, custom windows offer design flexibility. Whether your home has unique architectural features or non-standard window shapes, custom windows can enhance the look of your property. This design flexibility not only boosts curb appeal but can also increase your home’s value, so it’s a good investment, especially if you plan to sell in the future.
Moreover, custom windows allow you to choose the material and glazing that suits your needs. Whether you like the classic look of timber, the modern feel of aluminium or the cost-effectiveness of uPVC, custom windows can be made to your exact specifications. Advanced glazing options like triple glazing for better insulation or laminated glass for added security can also be included to increase the value of your investment.
Replacing Windows vs Installing New Windows
When upgrading your windows you have two options: replacing the existing windows or installing new ones. Replacing windows can be more cost effective especially if the existing frames are still in good condition.
This involves upgrading the glass to double or triple glazing or installing new sashes within the existing frame to improve energy efficiency without the cost and disruption of full window replacement.
Installing new windows is often necessary when upgrading from single glazing or when the existing frames are damaged or poorly insulated. This option is more expensive but you can completely overhaul the window system, improve the look and performance of your windows. You can also choose new styles, materials and glass types that suits your needs and home design.
What Should be Included in a Quote for New Windows or Window Replacement Costs?
When getting quotes for new windows or replacing your windows, make sure you know what should be included so you can get a fair deal. A quote should cover:
- Material Costs: The cost of the window frames and glass including any energy efficient upgrades like low-E glass or gas fillings.
- Labour Costs: The cost of installation can vary depending on the complexity of the job and the location of the property.
- Additional Features: Any extras like upgraded locks, custom colours or decorative glazing should be itemised.
- Warranty and Guarantees: A good quote should also include the warranty or guarantee on the windows and installation.
How to Choose the Right Window Installer
Choosing the right installer is important to ensure your new windows perform well and last long. Here are some tips for selecting a reputable installer:
Check Qualifications: Make sure the installer is certified by relevant industry bodies like FENSA (Fenestration Self-Assessment Scheme) or CERTASS.
Read Reviews: Look for reviews and testimonials from previous customers to see the quality of the installer’s work.
Compare Quotes: Get multiple quotes to compare prices and services. Remember, the cheapest option isn’t always the best; consider the overall value and the installer’s reputation.
Ask for References: A good installer should be able to provide references from previous jobs.
Why Choose All Clean London for Replacing Your Windows?
At All Clean London, we pride ourselves on being more than just a window cleaning company. As experts in all aspects of window care, from maintenance and cleaning to repair and full-scale replacements, we are your trusted partner for all window-related services.
Our experienced team ensures that every window installation meets the highest standards of quality and efficiency, tailored to your specific needs and home design.
Whether you’re upgrading to energy-efficient double glazing, replacing old windows, or installing entirely new windows to enhance your property’s curb appeal, we’re is here to help. Contact us today for a free, no-obligation quote and discover why we are London’s top choice for comprehensive window solutions.
