Double Glazed Windows

Made-to-measure uPVC double glazed windows for a warmer, quieter and more comfortable home

Made-to-measure uPVC double glazed windows designed to make your home feel warmer, quieter and more comfortable.

At DOVISTA, we make choosing new windows simple. Explore double glazed window styles designed around your home, your taste and the way you live, with clear guidance from our friendly team at every step.

Whether you want to improve energy efficiency, reduce outside noise, refresh your home’s appearance or replace tired old windows, our double glazed uPVC windows offer long-lasting performance with a clean, modern finish.

 

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Our purpose: bring more daylight
and fresh air into UK homes

Everything we do is driven by a simple purpose:

To let natural daylight and fresh air into people’s homes, creating healthier, more enjoyable living spaces.

It’s a purpose that shapes every decision we make—from how we design our uPVC products to how we support you throughout your window and door project.

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Double Glazing Designed for Everyday Comfort

Replacing your windows is one of the simplest ways to make your home feel warmer, quieter and more enjoyable to live in.

Double glazed windows are designed to help reduce heat loss, soften outside noise and improve everyday comfort throughout your home. But the glass is only one part of the story. The frame, seals, opening style, hardware and quality of installation all play an important role in how your windows look, feel and perform.

That is why DOVISTA double glazed windows are made around your home. From classic side hung windows to modern tilt and turn designs, our uPVC window range gives you the freedom to choose the style, finish and function that works best for each room.

With clear advice, made-to-measure designs and a simple step-by-step process, we help you choose double glazed windows with confidence.

 

double glazing designed for everyday comfort

A heritage built on trust

Distinctive brands. One united team.

DOVISTA is a group of distinctive brands and one united team. Each brand retains its own identity and heritage, while we collaborate to share expertise, improve consistency and drive innovation across our markets.

You may already know brands within the wider group such as VELFAC, Rationel and Krone Vinduer. DOVISTA is also part of the wider VKR Group, alongside VELUX.

DOVISTA is part of the VKR Group, a Danish, family-owned organisation with a history dating back to 1941. Across Europe, more than 7,000 colleagues share the same ambition: to create windows and doors that stand the test of time.

Our UK range combines European expertise with local insight, so homeowners can choose factory-made uPVC windows and doors built to consistent standards—backed by documentation, warranties and aftercare.

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Leading Window and Door
Brands Across Europe

A united family of companies delivering daylight, fresh air, and long-lasting quality.

DOVISTA brings together a strong portfolio of European window and door brands, each with deep local roots and specialised expertise. While every brand has its own heritage, craftsmanship, and market focus, they are united by a shared commitment to quality, sustainability, and architectural value. Together, our brands deliver solutions that enhance buildings, improve comfort, and create better living environments—across residential and commercial projects throughout Europe.

 

What Are Double Glazed Windows?

Double glazed windows are made with two panes of glass set within a sealed unit. Between the panes is a small gap, usually filled with air or insulating gas, which helps slow down the movement of heat through the window.

This extra layer helps your home hold on to more warmth in winter, while also reducing draughts and softening noise from outside.

A double glazed window is not just the glass itself. The frame, seals, spacer bar, opening function and installation all affect how well the window performs. That is why it is important to choose a complete window system that is designed to work together.

DOVISTA double glazed uPVC windows combine high-quality glazing with durable frames, practical opening styles and made-to-measure designs, helping you create a home that feels brighter, warmer and more comfortable.

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what are double glazed windows

Benefits of Double Glazed Windows

Double glazed windows can make a noticeable difference to the way your home looks, feels and performs. From everyday comfort to kerb appeal, the right windows can help improve the spaces you use every day. 

a warmer home

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A warmer, more comfortable home

Double glazing helps reduce heat loss through your windows, making it easier to keep your home warm during colder months. This can help reduce draughts and cold spots, so rooms feel more comfortable throughout the day.

less outside noise

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Less outside noise

If you live near a busy road, school, park or neighbour, double glazed windows can help soften everyday outside noise and help to create a calmer indoor environment. 

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Improved energy efficiency

By helping your home retain more heat, double glazed windows can support better energy efficiency. For the best results, the glazing, frame, seals and installation all need to work together as a complete window system.

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Better home security

Modern double glazed windows are designed with security in mind. Strong frames, quality hardware and secure locking options can help give you extra peace of mind at home.

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A fresher look inside and out

New windows can make your home look brighter, cleaner and more cared for. With a choice of frame profiles, colours, opening styles and finishing touches, your double glazed windows can be designed to suit both the outside of your property and the rooms inside.

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Low-maintenance performance

uPVC double glazed windows are a practical choice for busy homes. They are designed to be durable, easy to care for and reliable over time, helping you enjoy the benefits of new windows with less day-to-day upkeep.

How Double Glazing Helps Improve Energy Efficiency

Windows play an important role in how warm and comfortable your home feels. If your existing windows are old, draughty or poorly fitted, heat can escape more easily, making rooms feel colder and harder to keep comfortable.

Double glazed windows are designed to help reduce this heat loss. The two panes of glass, sealed gap and insulating frame all work together to slow the movement of warmth through the window.

One way window performance is measured is by its U-value. In simple terms, a U-value shows how easily heat passes through a material. The lower the U-value, the better the window is at helping to keep warmth inside your home.

But energy efficiency is not just about the glass. A well-performing double glazed window also depends on the frame, seals, glazing specification and quality of installation. When these elements work together, they can help create a warmer, more comfortable home with fewer draughts and cold spots.

DOVISTA double glazed uPVC windows are made to measure, helping each window fit your home properly and perform as intended.

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Energy Performance

Double Glazing vs Triple Glazing

Double glazing is a strong choice for many UK homes, offering a good balance of warmth, comfort, noise reduction and value.

Triple glazing uses three panes of glass instead of two. This can offer improved thermal performance in some situations, but it is not always the right choice for every home, room or budget.

The best option depends on what you want to improve. For example, a north-facing bedroom may have different needs to a bright kitchen, a quiet study or a living room with large windows.

When choosing between double and triple glazing, it helps to consider:

  • How warm or cold the room currently feels
  • How much outside noise you want to reduce
  • The size and position of the window
  • Your preferred frame style and opening function
  • Your overall budget and performance goals

DOVISTA advisors can talk you through both options in clear, simple terms, helping you choose the glazing specification that makes sense for your home.

Is Triple Glazing Worth It?
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Made-to-measure uPVC windows and doors. Personalisation made simple

Every home is different—and every project deserves a tailored solution. Our uPVC windows and doors are made to measure, with options across frame styles, colours, glazing, opening types and hardware.

We help you narrow choices quickly, understand what matters, and compare options confidently—so you get a finished look that suits your home perfectly.

 

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Designed for UK Homes

We understand how important it is for windows and doors to feel right—visually, practically and emotionally. Many UK homeowners worry about where to start and how to make the right choices. That’s why we focus on:

  • Clear, jargon-free guidance
  • Easy-to-understand options
  • Styles that suit homes from the 1950s to the early 2000s
  • Welcoming showroom spaces where you can explore designs in real-life room settings

From contemporary styles to classic looks in windows, patio/sliding doors and entrance doors, every DOVISTA product is designed to enhance comfort, improve energy efficiency and elevate kerb appeal.

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A Simple, Guided Customer Journey

Replacing your windows can feel overwhelming, but we’re here to make it straightforward. With DOVISTA UK, you can expect:

  • A clear, step-by-step process

  • Transparent, honest pricing with no hidden costs

  • Knowledgeable, friendly advisors

  • Practical help with compliance and regulations

  • Regular updates at every stage

  • Certified local installers trained in both product and customer care

  • Clean, efficient installation and trusted aftercare

Explore our Customer Journey
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Customise Your Double Glazed Windows

Choose the performance, style and finishing touches that make each window right for your home.

Your double glazed windows should suit the style of your home, not just the size of the opening. With DOVISTA, you can choose the details that shape how each window looks, opens and performs. 

Energy Performance

Energy Performance

Choose glazing and frame options that help your home feel warmer and more comfortable. Our team can explain U-values, heat retention and performance choices clearly, so you can compare options with confidence.
Frame Type and Aesthetic

Frame Type & Aesthetic

Your frame style shapes the character of your new windows. Choose from profiles designed for modern and traditional homes, with clean lines, softer detailing or a more classic look to suit your property.
Window Configuration

Window Configuration

Choose how each window opens and functions based on the room. Combine fixed panes for daylight with opening sections for ventilation, cleaning access or everyday practicality across bedrooms, bathrooms, kitchens and living spaces.
Colour Options

Colour Options

Your colour choice can complement brickwork, render, roofline, doors and interior finishes. Keep things classic with white, choose a softer neutral, or explore darker and wood-effect styles for a more distinctive finish.
Accessories

Accessories

Handles, stays, ventilation options and finishing details help your windows feel complete. These choices can improve day-to-day use, support airflow and add the final design detail that suits your home and personal style.
Glass Type

Glass Type

Choose glass to suit each room’s purpose. Obscure glass can add privacy, while other options can support safety, security, noise reduction or solar control, depending on what you want from your windows.

Double Glazed Windows FAQs

Common questions about choosing double glazed windows for your home.

Choosing new windows can bring up a lot of questions, especially if you are comparing styles, glazing options, energy performance and costs. Our FAQs cover some of the most common things UK homeowners ask when considering double glazed windows. 

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What are double glazed windows?

Double glazed windows are made with two panes of glass within a sealed unit. The gap between the panes helps reduce heat loss, making your home feel warmer and more comfortable.

Are double glazed windows worth it?

For many homeowners, double glazed windows are worth considering because they can help improve warmth, reduce draughts, soften outside noise and refresh the look of your home. They can be especially useful if your current windows are old, damaged or difficult to use.

Do double glazed windows reduce noise?

Double glazed windows can help reduce everyday noise from outside, such as traffic, neighbours or nearby schools. They will not make your home completely soundproof, but good glazing, frames, seals and installation can all help create a quieter indoor space.

Do double glazed windows stop condensation?

Double glazed windows can help reduce condensation caused by cold glass surfaces, but they may not remove condensation completely. Moisture levels, ventilation and room temperature all play a part. Our advisors can help you choose suitable glazing and ventilation options for your home.

How long do double glazed windows last?
 The lifespan of double glazed windows depends on the quality of the window, the standard of installation and how well they are cared for over time. At DOVISTA, we take pride in the quality of our uPVC windows and our professional installation service, helping your windows perform properly for many years.
How much do double glazed windows cost?
 The cost of double glazed windows depends on the size, style, glazing, colour, hardware and number of windows required. Because every home is different, the best way to get an accurate price is to request a tailored quote. 
What is the difference between double glazing and triple glazing?

Double glazing uses two panes of glass, while triple glazing uses three. Triple glazing may offer extra thermal performance in some situations, but double glazing is still a strong choice for many UK homes. The right option depends on your home, budget and performance goals.

Can I choose different window styles with double glazing?

Yes. DOVISTA double glazed windows are available across a range of uPVC window styles, including side hung, top hung, picture, reversible, tilt and turn, and inward opening windows.

Are uPVC double glazed windows secure?

Modern uPVC double glazed windows can offer strong security when they are designed with quality frames, secure hardware and reliable locking systems. The right specification can help give you greater peace of mind at home.

Can I see double glazed windows before I buy?

Yes. You can visit our DOVISTA Milton Keynes showroom to see window displays, compare frame styles, explore colour samples and speak to our team in person before making a decision.