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Single vs Double Glazing Explained

Single or double glazing? Here's an honest comparison — including when single is genuinely enough.

Reading as a…

For your home, we'd double-glaze the hot and noisy rooms and leave the sheltered ones single.

How they differ

Double glazing means two panes of glass with a sealed gap between them. The trapped gap slows heat and sound transfer far better than a single pane can.

Single glazing is one pane of glass. It's simpler and cheaper, and on a sheltered, quiet opening it's often perfectly adequate.

How to choose

Look for this

  • Double — slows heat and noise
  • Single — simpler, adequate when sheltered
  • Double earns its place on hot/noisy sides
  • Single is fine on quiet, shaded openings
  • Specified per opening, not blanket

Our honest view

We won't tell you to double-glaze the whole house. Double glazing earns its place on sun-hammered and road-facing openings; on a shaded, quiet rear window single glazing does the job. Spend it where it works.

Questions

Frequently asked

What's the difference between single and double glazing?

Single glazing is one pane; double glazing is two panes with a sealed gap between them. The gap slows heat and sound transfer far better than a single pane.

Is double glazing always better?

Not always worth it — on a sheltered, quiet opening single glazing is often adequate. Double earns its place on hot or noisy elevations.

Where should I use double glazing?

On sun-facing and road-facing openings, where heat and noise are actual problems.

From our range

What we make

uPVC Sliding Windows

Multi-track windows that need no swing space.

uPVC Casement Windows

Side-hung sashes for full airflow and the tightest seal.

uPVC Performance Systems

Double-glazed acoustic and thermal windows.

Related Guides

You might also need

Related guides covering this topic from other angles — different products, applications, or contexts.

Talk to the maker, not a middleman

Tell us your openings and we'll measure on site, advise, and give you a real quote — factory-direct from our Pannimadai works in Coimbatore.