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Based in Cheddar, Majestic Designs (UK) Ltd is one of Somerset's highly recommended double glazing specialists.

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New Windows Cost & Installation Guide

14th May 2026 |

News

Upgrading your property with new windows is one of the most rewarding home improvement projects you can undertake. Not only do fresh frames and pristine glass instantly elevate your home’s exterior appeal, but they also bring a wealth of practical benefits. From improving energy efficiency and reducing annoying draughts to enhancing home security and ultimately increasing your property’s value, the advantages are substantial.

However, embarking on a window replacement project requires careful planning. As with any significant home investment, understanding the financial commitment is crucial. The final cost of new windows is rarely a one-size-fits-all figure. Instead, it heavily depends on your chosen window style, the frame material, the type of glazing, and the overall complexity of the window installation process.

At Majestic Designs UK Ltd, we have spent over 23 years manufacturing and installing high-quality uPVC and aluminium windows across Somerset and the South West. We know that navigating the world of double glazing can feel overwhelming. That is why we have put together this comprehensive guide. We will walk you through exactly what to expect when pricing up your project, helping you make informed decisions that suit your budget, style, and energy efficiency goals.

What Are New Windows?

When we talk about installing “new windows,” the term can cover several different scenarios depending on your property’s needs. For many homeowners, it means replacing old, damaged, or rotting windows that are no longer keeping the weather at bay. For others, it involves upgrading from outdated single glazing to modern, energy-efficient double or triple glazing. Alternatively, you might be installing completely new windows as part of a home renovation, loft conversion, or property extension.

Regardless of the reason, modern windows are meticulously designed to improve your daily living experience. They provide superior thermal insulation, meaning your home stays warmer in the winter and cooler in the summer. Furthermore, they significantly enhance your home’s security with advanced multi-point locking systems, while offering a crisp, attractive appearance that breathes new life into your property’s facade.

How Much Do New Windows Cost in the UK?

Providing a single, definitive price for new windows is virtually impossible, as costs vary drastically from property to property. However, to give you a short overview of average pricing, a standard home replacing all its windows can expect to spend anywhere from a few thousand pounds to well over ten thousand, depending on the specifications chosen. The price fluctuates largely based on the materials and styles you select. For instance, uPVC windows are usually the most affordable and popular option on the market, offering exceptional value for money. On the other hand, materials like aluminium and timber, or complex styles like sash, bay, and entirely bespoke windows, are generally more expensive due to their manufacturing complexity and premium finish.

Main Factors That Affect New Windows Cost

When calculating the budget for your home improvement project, several variables will influence the final quotation you receive from your installer. The most prominent cost factors include the physical size of the window, your chosen frame material, the specific window style, your glazing choice, and any custom colour finishes.

Additionally, the total number of windows being replaced and the access requirements of your property play a major role. If your home requires extensive scaffolding for upper-floor windows, or if there is a need for sill replacement and interior plastering, the overall price will naturally increase. The safe disposal of your old, heavy windows is another logistical cost that must be factored into the total price.

Cost by Window Material

The chosen frame material fundamentally affects the price of your new windows.

  • uPVC: Unplasticised Polyvinyl Chloride (uPVC) is usually the most budget-friendly option. It is highly durable, virtually maintenance-free, and offers excellent thermal efficiency.
  • Aluminium: Aluminium offers incredible durability and a sleek, modern look. Its inherent strength allows for slimmer frames and larger glass areas, though it commands a higher price tag than uPVC.
  • Timber: Timber frames are more expensive but are often the preferred choice for period or character properties. They offer unmatched traditional aesthetics but require ongoing maintenance to protect them from the elements.

Cost by Window Style

Different styles affect the overall cost of new windows due to the varied manufacturing and installation techniques required. Standard casement windows, which are hinged at the side or top, are usually the most cost-effective. Conversely, sliding sash windows, versatile tilt and turn designs, projecting bay or bow windows, and specialised roof windows often cost considerably more due to their intricate design and installation complexity.

Window Installation: What Does the Process Involve?

The basic window installation process always begins long before the fitters arrive at your door. It starts with a comprehensive home survey to take highly accurate measurements, ensuring your bespoke windows fit perfectly. On the day of installation, the team will carefully remove your old windows, striving to minimise dust and disruption. Next, they prepare the structural openings, ensuring they are clean and level. The new frames are then expertly fitted into place, secured, and rigorously sealed to prevent any draughts or water ingress. Finally, the interior and exterior are trimmed and finished, followed by final checks to ensure everything opens, closes, and locks exactly as it should.

How Much Does Window Installation Cost?

The cost of window installation usually encompasses several different elements. It covers the labour of the skilled fitting team, all necessary fitting materials, high-quality sealants, cosmetic trims, and sometimes the safe, environmentally friendly disposal of your old windows. When you receive an estimate, it is important to check how these costs are presented. Some companies include all installation and labour fees within a single, comprehensive total quote. Others may list the manufacturing cost of the windows separately from the daily labour rates of the installation team.

Double Glazing vs Triple Glazing Costs

When selecting the glass for your new frames, the choice usually comes down to double or triple glazing. In simple terms, double glazing consists of two panes of glass separated by an insulating layer of argon gas. It is the common standard for UK homes, offering brilliant energy efficiency and noise reduction. Triple glazing utilises three panes of glass and two insulating cavities. While triple glazing costs more to manufacture and install, it can provide even better thermal insulation and enhanced acoustic reduction, making it a viable option for homes situated near busy roads or in particularly exposed areas.

Can New Windows Reduce Energy Bills?

Yes, absolutely. Energy-efficient new windows can significantly reduce heat loss, helping to maintain indoor warmth during the colder months. Modern windows eliminate the draughts and cold spots commonly associated with older, failing frames. Although opting for better, highly-rated glazing, such as the A+14 rated energy-efficient windows we supply at Majestic Designs UK Ltd, may cost slightly more upfront, it can support long-term financial savings by drastically reducing your central heating demand over the lifespan of the windows.

How to Choose the Right Window Installer

Choosing an experienced, accredited installer is just as important as choosing the windows themselves. Proper installation ensures quality, safety, and compliance with current building regulations.

Homeowners should always check for genuine customer reviews. For instance, Majestic Designs UK Ltd boasts over 3,700 independent reviews with an average score of 9.48/10 on FairTrades. You should also verify warranties, check for industry certifications (such as FENSA and MTC accreditation), and ensure that the installer provides clear, transparent pricing with no hidden surprises.

What Should Be Included in a New Windows Quote?

A professional, trustworthy quote should clearly detail every aspect of your project. It must include exact window sizes, the frame material, the glazing type, all handles and hardware, the chosen colour finish, and the full cost of installation. A good quote will explicitly state whether trims, sealants, and the disposal of old windows are covered. It should also outline the guarantees provided and confirm that you will receive the appropriate certification upon completion. Having all this information itemised helps homeowners compare quotes fairly and confidently avoid hidden costs down the line.

Enhancing Your Home with New Windows

Investing in new windows is a superb way to transform the look, feel, and efficiency of your property. By understanding the various materials, styles, and installation processes, you are well-equipped to make the best choice for your home and budget. If you are based in Somerset or the Southwest, the team at Majestic Designs UK Ltd is here to help you navigate your home improvement journey from the initial survey through to flawless installation. Contact us today!


Frequently Asked Questions

1. How much do new windows cost in the UK?

The cost of new windows varies depending on the size of your home, the materials used, and the styles chosen. uPVC casement windows are generally the most affordable, while bespoke timber or aluminium designs will increase the overall price.

2. What affects the cost of window installation?

Installation costs are affected by the number of windows, the complexity of the fitting, the need for scaffolding for upper floors, access issues, and the cost of labour and materials like sealants and trims.

3. What is the cheapest type of new window?

A standard uPVC casement window is typically the cheapest type of new window available on the market, offering great durability and energy efficiency at a budget-friendly price point.

4. How long does window installation take?

For a standard semi-detached house, window installation usually takes between two and three days. However, this can vary based on the weather, the complexity of the job, and the number of windows being replaced.

5. Are uPVC windows cheaper than aluminium or timber?

Yes, uPVC windows are generally much cheaper to manufacture and install than both aluminium and timber frames, making them the most popular choice for UK homeowners.

6. Does window installation include removing old windows?

Most reputable window installation companies, including Majestic Designs UK Ltd, include the safe removal and environmentally friendly disposal of your old windows in their fully comprehensive quotes.

7. Can new windows improve energy efficiency?

Yes. Modern double or triple-glazed windows are designed to trap heat inside your home, reducing draughts and reliance on central heating, which consequently improves your home’s overall energy efficiency.

With over 3,700 independent reviews on Fairtrades.co.uk, Majestic Designs are proud to have earned an above 9.48/10 rating in customer satisfaction Click to find out more

Customer Testimonials

“The fitting team were a credit. Clean, efficient and pleasant to know. Site left in a very clean state. Thank you.”

Mr & Mrs Parrott, Weston-Super-Mare

“All round excellent service. Used you in our previous home and was delighted with both installations you have done for us. Thank you.”

Mrs Hammerley & Mrs Manson, Weston-Super-Mare

“I cannot fault anything & best thing I ever did. I am relieved & happy that I have attractive doors & windows. Thank you.”

Mrs O'Connor, Tiverton

“Thank you!”

Mrs Twitchett, Puriton

Local area installations

Serving clients across Somerset and the South West

Majestic Designs install quality double glazing products throughout Somerset. From Taunton to Yeovil and Weston-super-Mare to Wells; our insistence on quality installations and outstanding customer care remains the same. With our factories and showroom in Cheddar, we are conveniently located in the heart of Somerset, with easy access to the surrounding towns and villages. As part of the local community, we are dedicated to improving the lives of all our customers and by employing a local workforce we are investing in the future prosperity of the area.

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