How to Stop or Eliminate Drafts from Windows?

Secondary double glazing is cheaper and better at reducing noise or soundproofing & will eliminate drafts
We offer the highest quality retrofitted double glazing solution in Sydney

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Stop drafts, bugs and


Our double glazed window systems can help counter the negative effects caused by the gaps around existing windows

Unsealed homes can lose up to 15% of their heat and cold through gaps around doors and windows. This is equivalent to removing a few bricks out of your wall.

A window that allows air to flow around it, regardless of the materials and construction used, will perform poorly as an insulator.

Drafty windows affect your comfort

Your room may become cold in certain areas, especially those near the legs and feet, due to winds coming through and around your windows. In order to make up for this, interior heating is typically set up higher than is necessary. As a result, even the cat or dog will want to climb up on the sofa and cuddle up to you in order to stay warm.

Because of the tight tolerance built into our secondary window glazing and the tight seal we create around the new frame, we are able to keep out dust and both hot and cold air while maintaining the temperature within the structure.


Air conditioning is heavily utilised in today’s busy offices, shops, and at home . By installing secondary glazed windows & doors, you can use less energy to heat or cool the building and prevent warm or cool air from escaping through your windows.

The Problem

For doors and windows to function they must have gaps between their edges and the frame. These gaps allow for ease of opening, closing and accommodate normal building movement.

These gaps can also allow the intrusion of :

  • Noise
  • Smoke
  • Moisture
  • Cold drafts or draughts,
  • Dust and embers
  • Light
  • Insects and vermin

And the leakage of:

  • Heating
  • Air conditioning

The Solution

Secondary double glazing can prevent the major impact of such gaps around your windows. The following Air Permeability Test section decribes just how effective our secondary double glazing is at stopping drafts around windows.

Air Permeability Test

Air Permeability Test Results for Secondary Glazed Windows

This defines the ability of the window to resist air penetration when it is subjected to differential pressure and is a measure of the air which seeps through the test window at given test pressures.

The average amount of air which leaks through a metre of the opening weather seal (as seen from the inside of the window) is measured and the measurements are calibrated in cubic metres (m 3), per hour, per metre of opening seal. A two panel slider 1215 W x 1193 H was fitted to a test rig at BSI in Hemel Hempstead.

The chart shows that as compared to a standard window (A & B), our secondary glazing offers a substantial reduction in air seepage at all pressures (C).

More information? Prices? Quotes?

If you require more information or a no obligation free quote for secondary double glazed windows or doors, please call us on 1300 275 353 or use our Contact Form to send us a message.