Why choose made-to-measure uPVC windows?

If you’ve started looking into replacement windows, you’ve probably come across uPVC more than once. That’s because it’s the UK’s most popular window material, and for good reason. uPVC (unplasticised polyvinyl chloride) is affordable, durable, and designed to deliver excellent insulation for modern homes.

Compared to traditional wooden windows or even some aluminium windows, uPVC offers a strong balance of performance and value. It helps reduce heat loss, improves your home’s comfort and keeps maintenance to a minimum. Unlike timber, you won’t need to worry about regular painting, neither rot or corrosion, and can simply set and forget your glazing for decades.

Although to ensure you benefit from these key points, it’s important to ensure these windows are installed properly. If your windows don’t fit the frame, which can often be the case with preset sizes, you risk inviting draughts and weather-wear.

That’s where made to measure uPVC windows come in. A precise fit ensures better energy efficiency, fewer draughts, and a finish that looks right for your home’s style.

What are the benefits of bespoke uPVC windows?

uPVC is a modern, durable window material designed to provide excellent thermal insulation and long-lasting performance. When combined with bespoke manufacturing, it becomes a perfect solution for homeowners who want reliability, comfort, and flexibility.

Affordability without compromise

One of the main benefits of uPVC windows is cost-effectiveness. Because the material can be manufactured at scale, it’s more affordable than timber while still delivering strong performance.

With made to measure uPVC windows, you also avoid costly adjustments later on. Everything is built to fit your exact opening, reducing waste, hassle, and unexpected costs.

Excellent thermal performance

Energy efficiency refers to how well you home prevents heat transfer. In the winter, you want your home to retain warmth, and uPVC features in-built profiles to prevent heat from escaping. Alternatively, in the summer months, you don’t want your space to overheat. These uPVC profiles, combined with modern glazing, prevent this too. As well as enjoying a more comfortable space, you’ll also be less dependent on costly appliances like radiators, so your energy bills will be lower.

Our uPVC windows feature advanced double glazing or triple glazing, with argon gas sealed units and warm edge spacers. This creates excellent thermal insulation, helping to:

• Reduce heat loss
• Lower heating bills
• Improve overall thermal efficiency
• Maintain a comfortable indoor temperature year-round

In fact, according to the Energy Saving Trust, upgrading to energy-efficient windows from single glazing can save UK households up to £235 per year on heating bills.

Low maintenance living

Unlike wooden windows, uPVC doesn’t require sanding, painting, or treating. It’s resistant to rot, rust, and corrosion.

All you need is occasional cleaning with soapy water to keep frames looking fresh. That makes it a popular choice for busy homeowners who want long-term durability without ongoing upkeep.

Strength and security

Security is a top priority for any homeowner. Our uPVC windows are reinforced with galvanised steel and fitted with high-quality locking systems that meet and exceed British Standards.

This provides:

• An added level of security
• Peace of mind for you and your family
• Resistance against forced entry

Tailored to your home

Every home is different, and your windows should reflect that. With bespoke uPVC windows, you can personalise:

• Colour and finish, including woodgrain effects
• Window handles and hardware styles
• Glazing options for privacy or noise reduction
• Overall design to match your home’s style

From modern anthracite grey to heritage-inspired Chartwell green, there’s a wide variety of styles to choose from.

Why are made to measure uPVC windows important?

Made to measure uPVC windows ensure a precise fit, reducing draughts and heat loss while improving security and appearance. They are manufactured to match your exact opening, which leads to better insulation, smoother installation, and long-term performance.

The importance of made to measure windows

Choosing made to measure windows is important from a sizing perspective, but there are other benefits too.

A poorly fitted window can lead to gaps, leaks, and increased energy bills. Even small inaccuracies can affect insulation and allow external noise into your home.

Here’s why precision matters:

• Perfect fit: Eliminates draughts and improves insulation
• Better energy efficiency: Reduces heat loss and improves thermal performance
• Improved security: Tighter installation means fewer weak points
• Cleaner finish: Frames sit neatly within your walls
• Long-term durability: Reduces wear caused by movement or misalignment

As experienced installers, we take accurate measurements and manufacture each window to suit your property exactly. This ensures everything fits first time, with no compromise.

What style of uPVC window is available to me?

We offer a wide range of modern uPVC windows to suit every type of property, from traditional homes to contemporary builds.

Casement windows

Casement windows are the most common style in the UK. They are hinged at the side or top and open outwards or inwards depending on your preferences.

They’re versatile, easy to use, and suit almost any home.

Best for: Everyday use across all property types

• U-values: As low as 0.8 W/m²K with triple glazing
• Colours: Wide range including white, grey, and woodgrain
• Features: Excellent insulation and secure locking systems

Flush casement windows

Flush casement windows feature glass panels that sit completely level with the window frames. This look replicates that of traditional timber.

Best for: Period-style homes or minimalist designs

• U-values: around 1.3 W/m²K
• Colours: heritage tones and contemporary finishes
• Features: slim sight lines and clean appearance

Sliding sash windows

Sliding sash windows open vertically, maintaining a classic appearance while using modern materials.

They are ideal for preserving traditional aesthetics.

Best for: Conservation areas and period homes, or those simply looking for a traditional feel

• U-values: typically 1.2–1.4 W/m²K
• Colours: woodgrain finishes and heritage shades
• Features: smooth sliding operation and optional tilt function

Bay and bow windows

Bay and bow windows project outward from your home, creating additional space and allowing more natural light in.

They also improve ventilation and views.

Best for: Living rooms and front-facing spaces

• U-values: dependent on configuration and glazing
• Colours: full customisation available
• Features: increased light and sense of space

Tilt and turn windows

Tilt and turn windows open inward and can tilt at the top for ventilation or fully open for cleaning.

They’re practical and secure.

Best for: Flats, upper floors, and modern homes

• U-values: around 1.0 W/m²K
• Colours: extensive modern and traditional options
• Features: easy cleaning and controlled airflow

Heritage-style windows

For homeowners wanting the look of traditional wooden windows without the upkeep, heritage uPVC options are ideal.

They replicate classic detailing while offering modern insulation.

Best for: Period properties and premium finishes

• U-values: as low as 0.74 W/m²K with triple glazing
• Colours: authentic heritage palettes
• Features: decorative hardware and timber-like appearance

What can I expect from my window installation?

We understand that replacing windows can feel like a big step. That’s why we keep the process simple, clear, and stress-free from start to finish.

1. Quotation

We begin with a consultation to understand your needs. We’ll measure your windows accurately and provide a clear, no-obligation quote.

2. Production

Once confirmed, your made to measure uPVC windows are manufactured using high-quality materials, including reinforced frames.

3. Installation

Our experienced installers fit your windows with precision. We work efficiently, minimise disruption, and ensure everything is sealed correctly to prevent leaks and draughts.

4. Aftercare and support

After installation, we remain on hand for support. You’ll receive a comprehensive 10-year warranty, giving you complete peace of mind.

FAQs

How long do uPVC windows last?

uPVC windows typically last 20-30 years or more with proper care, thanks to their durability and resistance to weathering.

Do uPVC windows reduce noise?

Yes, double glazing and triple glazing help reduce external noise, making your home quieter and more comfortable.

Are uPVC windows energy efficient?

Yes, they offer excellent energy efficiency by reducing heat loss and improving insulation, helping lower heating bills.

Can I customise my uPVC windows?

Absolutely. You can choose colours, finishes, glazing options, and hardware to suit your home.

Do I need planning permission?

Most replacement windows don’t require planning permission, but restrictions may apply in conservation areas.

Who are Advanced Glazing Systems?

We’re a family-run business with decades of experience in the glazing industry. Founded in 2004 by John Barnett alongside Andrew and Julie Barnett, our goal has always been simple: deliver high-quality products with outstanding customer care.

We supply and install:

• uPVC windows including casement, sliding sash, tilt and turn, and flush designs
• Doors including bifold, French, composite, and sliding patio doors
• Conservatories and orangeries tailored to your home

We work across Essex and London, offering a personalised service from start to finish.

Our accreditations include:

• FENSA registered
• Which? Trusted Trader
• Secured by Design

We also offer a no-quibble 10-year warranty, backed by insurance for added reassurance.

If you’re looking for trusted local suppliers who put your needs first, we’re here to help.

Call us on +44 (1277) 230101 or email sales@advancedglazingsystems.co.uk to request your personalised quote today.

In summary

• Made to measure windows uPVC ensure a perfect fit and better performance
• uPVC offers excellent insulation, durability, and low maintenance
• Bespoke designs allow full customisation to match your home’s style
• Professional installation reduces leaks, heat loss, and long-term issues
• Advanced Glazing Systems provide expert service, quality products, and peace of mind