Insulation / Existing Homes

Does your home have too little or no insulation, making it cold, damp, and expensive to heat? We can help you fix that.

Give your home a
new lease on life

Many houses in New Zealand have inadequate insulation — it makes them uncomfortable during winter, difficult to heat, and unhealthy to live in. The best solution is quality insulation.

Insulating an existing house

Retrofitting insulation in the ceiling and underfloor doesn’t require building consent. It’s an easy, cost-effective way to give your home a thermal boost, making it warmer, drier, healthier, and more energy-efficient. Even if your home has existing insulation, it may have settled over the years and need replacing.


If your home has adequate roof space, installing insulation in the ceilings is relatively simple and highly recommended. Hot air rises and, without insulation, up to 35% of heat in your home can be lost through the ceiling.


If you have suspended floors and the space under the house is accessible, we also recommend getting underfloor insulation installed. It helps to retain heat and when combined with a ground vapor barrier will prevent unwanted moisture rising from the ground into your home.


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.

Service you can trust

We take pride in providing a positive experience for all customers – from start to finish. That’s why we go the extra mile with our Post-Installation Audit on our work, so you can be sure that your insulation has been installed to the highest standard. It’s our quality guarantee.

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Cosy Wall Story
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Want to know

Contact one of our
insulation experts today

“I’m so impressed with the amazing service. Such a friendly efficient team. I’m sure it’s made a difference as far as keeping the heat in. Thank you.”

— Loraine

A warmer, healthier home is just one click away…

Learn more about our insulation solutions with the links below. Don’t see what you’re looking for? Get in touch.