the glazing desk
Glazing, explained by the experts
Double, triple, secondary and the glass in between. We break down what actually changes a window’s warmth, quiet and security — so you can buy glazing well, then compare quotes with confidence.
- Plain-English guides to every glazing type and glass technology
- Understand U-values, Low-E coatings, argon fills and warm-edge spacers
- Free, no-obligation quotes from vetted local installers
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01 / how it works
Compare glazing the informed way
Thousands of UK homeowners choose glazing and compare quotes this way — understand the options first, then get matched with vetted local installers.
Tell us your postcode
Answer one quick question and share where to send your quotes. It takes under a minute and costs nothing.
We match vetted installers
Your enquiry is matched with accredited local fitters who work to recognised industry standards.
Compare free quotes
Receive free, no-obligation quotes to compare on price, glass specification and guarantee — with no pressure to proceed.
New to comparing installers? It pays to know the buyer mistakes to avoid before you commit, and you can also read verified installer reviews before you decide.
02 / glazing types
Glazing types at a glance
Double, triple and secondary glazing each solve a different problem. Here is how they compare on the things that matter.
| Type | Best for | Typical make-up | Worth knowing |
|---|---|---|---|
| Double glazing | Everyday warmth & the mainstream choice | Two panes, one sealed gap, usually argon-filled | The standard for most UK homes — how double glazing works. |
| Triple glazing | Cold rooms, exposed elevations, low U-values | Three panes, two sealed gaps, warm-edge spacers | Compare the triple glazing benefits and cost vs double before upgrading. |
| Secondary glazing | Period homes, listed buildings, noise | A discreet inner pane added behind the existing window | Keeps the original frames — secondary glazing explained. |
03 / the glass inside
The glass technology inside the unit
Two windows can look identical yet perform worlds apart. The difference is usually the glass, the gas and the spacer.
Low-E coatings
A microscopically thin coating that reflects heat back into the room while letting daylight through.
Learn more →Argon & gas fills
An inert gas in the sealed gap slows heat transfer far better than plain air.
Learn more →Laminated & toughened
Safety and security glass — one holds together when broken, the other resists impact.
Learn more →Acoustic glass
Specialist laminated glass tuned to cut traffic and street noise from a busy road.
Learn more →04 / knowledge base
The glazing knowledge base
Short, practical guides that teach you how to specify and buy glazing well.
Types of glazing explained
The full map of double, triple and secondary glazing and where each one earns its place.
Start here → guideDouble glazing explained
How a sealed unit keeps heat in, what a good U-value looks like and what to ask for.
Read guide → guideTriple glazing explained
When a third pane is worth it — and when double glazing is the smarter spend.
Read guide → detailSpacer bars & warm-edge tech
The unsung edge of the unit that quietly decides condensation and comfort.
Read guide → detailLaminated & toughened glass
Where safety glass is required by building regulations and where it just makes sense.
Read guide → decideChoosing the right glazing
Match glazing to your home, your rooms and your budget — a clear decision framework.
Read guide →Ready to compare glazing quotes?
Get free, no-obligation quotes from vetted local installers. Prefer to spread the payments? There are ways to fund windows and doors, subject to eligibility, and options for spreading the cost of home windows if you qualify.
Ask the glazing experts →Surveyors in many areas have appointments this month.