Not every window needs double glazing. Here's an honest look at when single glazing is genuinely enough.
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.
We'd rather tell you where you don't need to spend. A shaded rear bathroom window doesn't need double glazing — put that money into the west-facing bedroom instead, where it does real work.
On shaded, quiet openings — north-facing windows, quiet rear elevations, small bathroom windows, and rooms you don't cool much.
Not on the right openings. A shaded rear window doesn't need double glazing — spend it on the hot or noisy side instead.
Yes — we'd rather spec honestly than upsell glazing that won't do anything.
Related guides covering this topic from other angles — different products, applications, or contexts.
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