Hutt at Heart
Photo of frosty window

Eco Design Tips: Double glazing and window frames

Upgrading to double glazing is a necessity in upgrading our housing stock from mid-20th century levels of house performance to 21st century levels.

Double glazing has numerous advantages, starting with fewer draughts, less sound from outside, cheaper heating costs and not having the sensation of cold that you get from a single glazed window. Superior locking systems and a variety of opening styles are some other benefits.

With double glazing you should also have less condensation, but some of the cheaper framing types might attract condensation on the frames and edges of the glass. Frame choice can reduce the likelihood of this.

The main varieties of window frames are wood, PVC and aluminium, each of which has its own characteristics. If you are aiming for high insulation performance, wood or PVC frames will do better for you.

If you want to retrofit double glazing into existing frames consider whether the frame condition is good enough to justify it, and whether the draughtiness of the existing joinery is manageable. Draught-stopping can be difficult to affect sometimes.

Some things that might determine final choice if purchasing double glazing are:

  • Style of house,
  • Condition of existing windows,
  • Draughtiness of existing windows,
  • Wind exposure,
  • Sun exposure,
  • Noise levels,
  • and whether you use daytime heating.

A final common question, which should I have – double glazing or blinds/curtains?

The answer is both!

Hutt City Council offers a free home assessment service by our in-house Eco Design Advisor.

For a full house assessment and advice,

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Subscribe to Hutt at Heart – Te Manawa, your monthly email newsletter where you can find out about fantastic things going on across our city and at Hutt City Council.