Windows & Home Improvement

The Homeowner's Guide to Buying New uPVC Windows

Thinking about replacing your windows? Our practical guide explores everything you should consider, from choosing the right style and colour to improving energy efficiency, security and kerb appeal.

By
Nicolas Hawke
Nov 2026
·
6 minutes

Replacing your windows is a significant investment in your home, and with so many styles, colours and specifications available, knowing where to start isn't always easy.

Whether you're updating a traditional property or giving a more contemporary home a fresh look, the right windows can make a real difference to its appearance, comfort and energy efficiency.

At Abbey Windows Leicester, we believe choosing new windows should be an informed and enjoyable process. Here's what to consider before making your decision.

White vertical sliding sash window allowing warm natural light into a home office, with a view of autumn trees and neighbouring houses.
Vertical sliding sash windows bring timeless character to a room while making the most of natural daylight.

1. Choose a window style that suits your home

One of the first things to consider is the style of window that will complement your property.

Modern uPVC windows are available in a variety of designs, each offering a different appearance and practical benefits.

  • Casement windows: A versatile and popular choice, with side or top-opening sections that suit a wide range of property styles.
  • Flush sash windows: Designed with opening sashes that sit neatly within the outer frame, creating a clean, understated appearance.
  • Mock sash horn windows: A great option if you love the traditional appearance of vertical sliding sash windows but want a more affordable alternative with the practical benefits of modern casement windows.
  • Vertical sliding sash windows: An authentic traditional design featuring two vertically sliding sashes. Particularly suited to period properties and homeowners looking to retain a classic appearance.
  • Tilt and turn windows: A versatile option offering two opening functions. The window can tilt inwards at the top for controlled ventilation or open inwards from the side, making cleaning and access easier.
White uPVC tilt and turn windows above a modern kitchen sink, with one window tilted inwards for ventilation.
Tilt and turn windows offer flexible ventilation, with the option to open inwards for easier cleaning.

Think about the age and character of your property, as well as the appearance you're hoping to achieve. Traditional styling can complement period homes, while simpler profiles often work beautifully with contemporary architecture.

It's also worth considering how you use each room. For example, tilt and turn windows can be particularly practical where easy cleaning or flexible ventilation is important.

2. Think about colour, finish and kerb appeal

Your window frames can have a surprisingly big impact on the overall appearance of your home.

White uPVC remains a popular choice for its clean, timeless finish, but today's range of colours and finishes offers much more flexibility.

Anthracite grey creates a contemporary look, while Chartwell Green brings a softer, more traditional feel. Woodgrain finishes can also introduce the character of timber without the same ongoing maintenance requirements.

Chartwell Green uPVC bay windows with matching front door on a traditional red brick home.
A soft green finish adds character and kerb appeal, complementing the warmth of traditional brickwork.

It's worth considering how your chosen colour will work with your existing brickwork, render, roofline, doors and other exterior details.

You might also want to think about different colours inside and out. A contrasting interior finish can help your new windows complement your décor while maintaining the appearance you want from the street.

The right combination can transform your home's kerb appeal without changing its architectural character.

3. Look beyond the glass when considering energy efficiency

Improving energy efficiency is one of the most important reasons homeowners choose to replace older windows.

Modern double-glazed uPVC windows are designed to help reduce unwanted heat loss, improve insulation and create a more comfortable living environment.

However, it's worth looking beyond the fact that a window is double glazed. The overall thermal performance depends on several factors, including:

  • Glass specification: The type of glazing, including low-emissivity glass, can influence how effectively heat is retained.
  • Frame construction: A well-designed uPVC profile helps minimise heat loss around the edges of the window.
  • Installation quality: Correct fitting and sealing are essential to achieving the intended performance.

When comparing different windows, look for their published energy ratings and U-values. These provide useful ways to understand and compare thermal performance.

A better-insulated home can feel warmer and more comfortable, potentially reducing the amount of energy needed to maintain a pleasant indoor temperature.

4. Make security a priority

Your windows are an important part of your home's overall security, so it's worth understanding the locking systems and hardware included in your chosen specification.

Modern uPVC windows can incorporate multi-point locking mechanisms, robust hinges and secure locking handles, helping to protect vulnerable opening sections.

When comparing products, ask about:

  • Multi-point locking systems.
  • The quality and specification of window hardware.
  • Reinforced profiles where appropriate.
  • The security standards and testing relevant to the complete window assembly.

You may also come across standards such as PAS 24, which relates to the enhanced security performance of doorsets and windowsets.

Remember that security depends on the complete window system, its specification and how well it's installed, rather than any single component.

5. Choose an installer you can trust

Even the best-quality windows need to be installed properly to deliver the performance you expect.

Choosing an experienced installer is just as important as choosing the right product.

Before committing, consider asking:

  • Will the company carry out a proper survey and measure?
  • What window profiles and specifications are being offered?
  • Is installation included in the quotation?
  • What guarantees are provided for the products and workmanship?
  • What aftercare is available if you need assistance?

It's also worth looking at customer reviews and examples of previous installations.

A clear, detailed quotation should explain exactly what's included, so you can compare like-for-like rather than simply looking at the final price.

At Abbey Windows Leicester, we believe good service starts with understanding what you want to achieve and helping you find the right solution for your home.

6. Look at the overall value, not just the price

It's natural to compare prices when investing in replacement windows, but the cheapest quotation isn't necessarily the best value.

Differences in frame profiles, glazing specifications, hardware, installation standards and guarantees can all influence the overall quality of the finished product.

A slightly higher initial investment may offer better long-term value if it means choosing a window system that delivers the performance, appearance and durability you're looking for.

Take the time to understand what's included in each quotation and don't be afraid to ask questions.

The aim is to find windows that suit your home, your budget and your expectations for years to come.

Making the right choice for your home

Choosing new windows doesn't need to be complicated. By thinking carefully about style, colour, energy efficiency, security and installation, you can make a decision that improves both the appearance and everyday comfort of your home.

Whether you're looking for classic white casement windows, traditional mock sash horn designs, authentic vertical sliding sash windows or versatile tilt and turn windows, there's a uPVC window solution to suit almost every property.

At Abbey Windows Leicester, we supply and install quality uPVC windows for homeowners across Leicester and Leicestershire.

If you're considering replacing your windows, we'd be happy to help you explore the options and find the right solution for your home.

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Thinking about your own project?

Speak to the Abbey Windows Leicester team for friendly advice and inspiration tailored to your home.

Whether you’re replacing tired windows or planning a larger renovation, we’re here to help you explore the right options for your property.
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