CosyWall Insulation (CWI) is an external wall cavity insulation system (EWCIS) designed to insulate the walls of older homes. It provides thermal and acoustical insulation to existing wall cavities and is installed without the cost and hassle of removing the internal linings. Installation is done via small holes through the external cladding, or from inside via holes in the internal linings. The result is high installed R-values and a warm cosy home. CosyWall insulation has been successfully growing since 2002 based on three core principles;

- Using a Great Product.
- Developing Proven Methods.
- Ongoing Training and Auditing.

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why choose
existing wall insulation

  • Cavity wall insulation saves money and our nations limited energy resources.
  • CosyWall is non-combustible
  • External wall insulation can make your home warmer, drier, healthier
  • High installed R-values in comparison to other exterior wall insulation.
  • CosyWall is NZBC compliant and CodeMark certified
  • CosyWall is safe and has no added formaldehyde
  • CosyWall is a dry fibre existing wall insulation system that utilises water repellent glasswool insulation
  • CosyWall will not shrink or settle over time
  • Available nationwide through our specialist retrofit wall insulation resellers
  • Proven New Zealand history of use.
  • Fills up the gaps that are often left by a blanket or segments.

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wall insulation
news and blog

5 reasons why you should insulate your home

Insulation is important for any and every home. Before you think about heat pumps or solar heating, you’ll want to ensure your house is well insulated. Here are a few reasons why you should insulate the walls of your home.

When is the best time to insulate your home?

If you’ve been thinking about insulating your home, you’re probably wondering when the best time is to do so. Of course, you can insulate your home any time of the year, however there are certain pros and cons of insulating your home in summer, as well as in winter.

We’ll take you through both seasons to help you plan your insulation needs.

5 tips on how to build a sustainable home

If you’re building a home or are thinking of renovating, you’ll want to start thinking of ways to make your home sustainable. Not only is it better for the environment, but it can also help you save money in the long-run. Here are our 5 tips on how to build a sustainable, eco-friendly home.