Check out our SUMMER Promo
38 d 15 h 38 m
Products Guide

6 min read

Window glazing explained – types and functions

Written by

Agata Gniady - Tęgi

Reading Time: 6 minutes

Windows are an integral element of a building and as such, they provide insulation,  ventilation, lighting and privacy, both during the daytime and nighttime. They allow the building occupants to enjoy the views of the neighbourhood and, at the same time, keep them hidden from nosey neighbours.  Although they may be perceived as one of the most vulnerable points of access for intruders to enter a building, they play an important role in ensuring one’s house safety and security. And to be honest, most of these features are achievable not only thanks to the window’s frame or profile but also due to window glazing.  Over the years, window designs have evolved because of technological advancements taking place. The same refers to window glazing. Nowadays, window glazing is available in a variety of choices to suit everyone’s needs and requirements. Beyond the energy efficiency gains, the right window glazing may surely impact on other performance areas, such as, among others, the design, acoustics, fire resistance and overall light levels. When looking at types of glazing, it is also crucial to consider such key benefits as security and privacy. 

 

What is the glazing of a window

But let’s start from the basics, shall we? While researching window glass types for your home or business, you’ll often come across the term ‘window glazing unit’. It is sometimes misunderstood that glazing refers to the glass with added special coating – this is not true. Window glazing is essentially the part of a window made of glass. To be precise: the word glazing refers to the glass that is installed in the window frame. There are three different window glazing options. One sheet of glass is a single glazed window, two window glazing  panes create a double glazed unit in the window and with three panes of glass, you get a triple glazed window.

 

Despite the fact that window glazing and window panes seem to be interchangeable terms, they, in fact, are not. The reason is there are multiple window panes types available. What separates one from another is the way they are manufactured, for example tempered glass (made from annealed glass via a thermal tempering process) or laminated glass (made up of glass layers held together by a polymer interlayer). Glazing, on the other hand, is the broader term that refers to a pane of glass, but not usually the specific type of manufactured glass.

 

Types of window glazing units 

A glazing unit is a structure that consists of at least two panes of glass that create an internal cavity filled with air or other gas, separated from each other and sealed around the perimeter by a warm edge spacer, sealants and vapour-absorbing substances. Traditionally, we differentiate them into three window glazing options based on the number of glass panes: single glazed windows, double glazed windows and triple glazed windows. Nowadays, there is a lot of discussion over double glazed windows versus triple glazed windows and their benefits – we have also covered this topic broadly in one of our previous blog posts HEREAt this point, we just want to sum up the most important features of these three window glazing types:Single glazingSingle glazed windows include a single layer of glass. Honestly, we won’t indulge in much discussion about this type of window glazing, as single glazed windows are the least energy-efficient ones. They are not much effective at filtering-out noises and allow more heat loss than any other window glazing explained in this blog post.Double glazingDouble glazing types are designed with two glass panes, ensuring much better insulation and noise control. These glazing units would be perfectly enough for rooms which are used less frequently, or are not kept at a higher temperature. They are also appropriate for rooms located in the more sunny southern part of the house. One of the main benefits of double glazed windows is their price – it is much lower than in the case of their triple glazing counterparts.Triple glazingAs triple glazing consists of three glass panes, it obviously offers much better insulation and maximum energy efficiency. That’s why triple-glazed windows are highly recommended for modern buildings and energy-saving homes called passive houses. In fact, they are from 20 to 30% more energy efficient (with U-value from 0.9 W/m2K – passive windows) than the double glazing options. The third additional pane helps in noise reduction, too.

 

Window glass types by function 

Once we have discussed glazing types windows are equipped with, it is time to focus on numerous window glass types and names. It is good to bear in mind that the type of glass you choose for your windows will affect their functionality and appearance. Knowing the following types of window glass  can help you make your decision during the window buying process: 

  • Laminated glass (VSG) – it effectively reduces the risk of burglary or theft. If it breaks, the pieces of the glass stay attached to the film, helping to avoid injuries to nearby people. PVB (polyvinyl butyral) foil makes it difficult to break through the glass, too.
  • Tempered or toughened glass (ESG glass) – it is characterised by increased resistance to crushing or breakage. However, if it breaks, it falls apart into small pieces with blunt edges, which minimises the risk of injury.
  • Matt glass  – it is achieved with the use of matte PVB mat foil (in VSG panes), thanks to the technology of etching the surfaces with acid (Satinovo) and by sandblasting.
  • VSG coloured glass – it provides architects and designers with complete creative freedom. There are various colour options of various intensity available, including transparent, translucent or non-transparent ones.

  • ESG coloured glass – its colour is obtained by applying a layer of enamel to one of the sides of the glass pane.
  • Frosted glass – it is produced by the sandblasting or acid etching of transparent sheet glass. It has 10-20% opacity. It comes out as translucent because of light scattering during transmission – and it still obscures visibility even as it transmits light.
  • Ornamental glass – translucent, colourless or body-tinted glass. It provides wide possibilities in terms of design and allows you to fully personalise your space. Depending on the pattern, there is greater or lesser transparency.
  • Selective glass  – it reduces the flow of solar energy entering the building and at the same time maintains a relatively high level of light transmission.
  • Absorbing glass  – it absorbs the sun’s rays, reducing light transmission and the amount of solar energy inside the building. 
  • Reflective glass – it creates the mirror effect and reflects light radiation from the glass, allowing for the simultaneous reduction of solar energy infiltration.

 

Different window glass types and prices

All the above-mentioned window glass types are used according to their functions, including decorative, sound absorbing, fireproof, safety and solar control ones. Apart from that, you can find some real technological innovations, like smart glass, also known as switchable glass, that allows for the opacity of the windows to be adjusted at the touch of a button – from opaque to completely transparent. There are also self-cleaning panes available – they provide natural cleaning thanks to the action of UV rays and rain and are ideal for hard to reach places. 

While choosing the right window panes that will fit you and your house the most, focus on the purpose of the window, the building location, features desired and obviously, your budget. Window glass prices depend heavily on the glass size (per square metre), thickness (in mm), type, tint, and features. At Fenbro, we offer various solutions, each of them suitable for a different residential or commercial application. Have a closer look at the window pane offer on our website!

Read more

Tips & Advice

6 min read

Importing windows and doors from Poland to the US — tips worth knowing
Products Guide

7 min read

How to choose the right bathroom window
Products Guide

7 min read

Fully fitted composite doors from reliable suppliers
Tips & Advice

5 min read

Replacing windows in your home — Fenbro’s expert advice
Tips & Advice

5 min read

Replacing doors — everything you need to know in the UK and Ireland
Tips & Advice

8 min read

How to install a window – step by step DIY guide
Tips & Advice

7 min read

Thermal insulation and sealing — how does it affect energy efficiency?
Tips & Advice

8 min read

Importing building materials from Poland — everything you need to know about the process
Industry News

4 min read

Breaking news: Fenbro fitting services now available in the UK!
Our Services

8 min read

How much does window installation cost? Understanding the costs of professional window fitting
Tips & Advice

8 min read

Replace standard old windows with sliding patio windows — transform the look of your home!
Tips & Advice

6 min read

At what height should windows be installed — a guide to optimal window placement
Industry News

8 min read

How much do new windows cost? Check what factors influence window prices
Tips & Advice

6 min read

Modern front door styles – design inspirations from the Experts
Tips & Advice

7 min read

Replacing sliding doors in your house — a step-by-step guide introduction
Tips & Advice

5 min read

Setting windows to winter mode: how and when to do it
Industry News

8 min read

Best selling windows and doors in 2024 – new trends and our customers’ most loved products
Industry News

8 min read

Grants for replacing windows and doors – how can you benefit in 2024?
Industry News

3 min read

Popular construction summits in Ireland and the UK: Where to go?
Industry News

7 min read

Get to know our window fitter better! Interview with Marcin Wojtyczko
Our Services

9 min read

Selecting windows and doors for secure and modern office buildings
Tips & Advice

11 min read

12 questions to ask before buying sliding doors
Tips & Advice

8 min read

Does EU joinery comply with the UK safety standard PAS24?
Tips & Advice

10 min read

Which side and direction should a door open? Decide before you buy!
Products Guide

9 min read

Joinery glossary explained – everything you need to know about window and door parameters
Tips & Advice

7 min read

Choosing the right colour for your new windows
Products Guide

9 min read

8 different types of window panes for your home
Tips & Advice

8 min read

How to properly measure for a front door – Our Expert has the answer!
Tips & Advice

10 min read

Building regulations for windows and doors in UK and Ireland
Tips & Advice

4 min read

Is it worth replacing house windows and doors during a major renovation?
Tips & Advice

5 min read

Protection against external noise – the benefits of acoustic doors
Tips & Advice

5 min read

What is the FENSA certificate and what is it required for?
Products Guide

8 min read

Wikęd front doors – what distinguishes this manufacturer’s door models?
Tips & Advice

8 min read

How can the front door improve the BER rating of your house?
Tips & Advice

4 min read

What is the difference between HST and PSK sliding doors?
Tips & Advice

5 min read

Modern smart-slide doors – an alternative to traditional door solutions
Our Services

6 min read

Benefits of choosing Fenbro over your local window and door suppliers
Tips & Advice

5 min read

Following the trend of frameless windows – freedom and elegance
Tips & Advice

6 min read

Standard window sizes – which are used?
Tips & Advice

8 min read

How does Fenbro prepare a quote for a window and door order?
Products Guide

6 min read

Aluminium or uPVC? How to choose the best material for your windows and sliding doors?
Tips & Advice

6 min read

Looking for the cheapest windows? Here’s how to save on importing Polish windows!
Our Services

7 min read

10 reasons why Fenbro customer service gets 5-star ratings!
Products Guide

6 min read

Main differences between casement and tilt and turn windows – pros and cons
Our Services

5 min read

How much does the warranty on doors and windows from Poland cost?
Tips & Advice

7 min read

How to choose the best replacement windows for your house
Products Guide

7 min read

5 points to consider when buying garage doors
Our Services

8 min read

Buying windows online – how to protect yourself from window company scams?
Industry News

5 min read

Poland is one of the world leaders in window and door joinery – here are the reasons and causes
Tips & Advice

6 min read

Most common window types – how do they actually differ?
Products Guide

5 min read

Everything you need to know about bifold doors – pros and cons
Tips & Advice

8 min read

When is it time to replace windows at home? 10 useful tips
Products Guide

5 min read

Simplicity and minimalism in the interior design – new steel-look window and door systems
Our Services

6 min read

Why is professional window replacement better than DIY?
Tips & Advice

7 min read

Everything you need to know about building a house and choosing windows and doors for it
Products Guide

5 min read

Anthracite grey RAL7016 windows: Why are they so popular?
Tips & Advice

6 min read

Features of good windows – what to look for when choosing them
Tips & Advice

6 min read

Guide to Velux window sizes: Choosing the right size for Your home
Products Guide

6 min read

A guide to Passive House Windows
Tips & Advice

6 min read

What makes French doors special? Why are they so popular?
Tips & Advice

6 min read

Double glazing vs Triple glazing: Which is better?
Tips & Advice

6 min read

Can windows and doors make your home more energy efficient?
Tips & Advice

6 min read

How to ensure that there is plenty of natural light in the house?
Tips & Advice

6 min read

Foggy windows? 12 ways to get rid of window condensation
Tips & Advice

5 min read

How to choose the right door colour to match the style of your home? – Advice from the experts
Products Guide

5 min read

The comparison of uPVC, aluminium and wooden windows – facts and myths
Products Guide

7 min read

How to choose the best windows and doors for the UK weather – useful tips to know before you buy!
Tips & Advice

4 min read

Comparison of inward and outward opening windows: advantages and disadvantages
Our Services

7 min read

9 Questions you wanted to ask Fenbro Joinery Experts – Q&A
Tips & Advice

6 min read

How to save on heating costs? Window replacement as a way to lower your energy bills in winter
Products Guide

4 min read

What defines premium uPVC sliding systems?
Products Guide

4 min read

Protect your home against all weather conditions with stylish looking alu clad windows!
Products Guide

5 min read

Prolong summer and let more sunlight into your home! Get to know new aluminium sliding doors from Fenbro
Tips & Advice

5 min read

How to effectively reduce outside noise in the comfort of your own home?
Industry News

4 min read

Every satisfied customer is the best reward – Interview with Paweł Brodzik, CEO of Fenbro
Products Guide

4 min read

A great idea for a chill zone in your garden – Aluminium pergolas in the Fenbro offer
Our Services

5 min read

How to transport windows from Poland
Products Guide

5 min read

Why is it worth investing in WIKĘD front doors?
Tips & Advice

5 min read

What are the differences between PVC and uPVC?
Tips & Advice

6 min read

Window maintenance: what you can do to extend the life of your windows
Industry News

5 min read

Why should you buy windows and doors from Poland? We explain the Polish joinery phenomenon!
Tips & Advice

5 min read

How to measure windows correctly? Use these useful tips from our Expert!
Tips & Advice

7 min read

Choosing the right windows – basic parameters and cost-optimisation
Tips & Advice

6 min read

How to assess the quality of insulated glass? A mini guide for window buyers
Our Services

4 min read

Window replacement and installation – Fenbro services in Ireland

Ask our sales Team!

Have any questions?

Follow us on social media

facebook instagram youtube linkedn pinterest twitter Hover
Remove all
Compare products