Many older New Zealand homes have ceiling insulation and underfloor insulation, but little or no insulation in the external walls. This can leave a big gap in the home’s thermal barrier. Warm air can escape through the walls in winter, and heat can move into the home during summer. 

CosyWall Insulation is designed to solve this problem. It is a retrofit wall insulation system for existing homes, which means it can be installed into wall cavities without removing all the internal linings. For many homeowners, this makes it a practical way to improve comfort without taking on a major renovation. 

At Absolute Energy, we install CosyWall Insulation for homeowners across the top of the South Island who want a warmer, drier, and more comfortable home. 

What is CosyWall Insulation 

CosyWall is a blown wall insulation system for existing walls. The insulation is installed into the wall cavity through small access holes, either from the inside or outside of the home, depending on the property and the installation plan. 

Once the insulation has been blown into the wall cavity, the access points are repaired and made ready for finishing. The goal is to fill the wall cavity properly, helping reduce heat loss and improve the way the home holds warmth. 

CosyWall is also CodeMark certified and has been installed in thousands of Kiwi homes since 2002. 

How CosyWall is Installed

Why Wall Insulation makes such a Difference 

A home’s thermal barrier works best when the ceiling, floor, and walls all work together. Ceiling insulation helps slow heat loss through the roof. Underfloor insulation helps reduce cold air coming up through the floor. Wall insulation helps complete the barrier around the living spaces. 

Without wall insulation, heat can still escape through the external walls. This can make the home harder to heat and less comfortable during colder months. 

CosyWall helps improve this by adding insulation where many older homes need it most. Once installed, the home can retain heat better, which can make rooms feel warmer and more settled. 

CosyWall Reviews

Customer reviews are one of the best ways to understand the real difference CosyWall can make in a home. These Google reviews show how homeowners have experienced the product and the installation process. 

Rose 

★★★★★  

A great experience getting my outer walls insulated for winter. The team are reliable, friendly, customer focused and they care about outcomes. The difference in the space is notable, and I am very pleased with the results! 

Jonny 

★★★★★ 

We are so glad we decided to get the CosyWall insulation done and were blown away by the difference it made to our home. We already had double glazing and underfloor/ceiling insulation but no exterior wall insulation. Without a doubt the CosyWall made the biggest difference of the three to our home. The warmth is now retained, and it feels like living in a brand-new home. Highly recommended! Thanks, Jonny & Alicia 

Steve and Emma  

★★★★★ 

Absolute Energy installed CosyWall Insulation into Steven and Emma’s home. Here what a difference it’s made in their lives.

Talk to Absolute Energy about CosyWall Insulation 

If your home already has ceiling and underfloor insulation but still feels cold, your walls could be the missing part of the thermal barrier. 

Contact Absolute Energy today to ask about CosyWall Insulation for your existing walls. Our team can assess your home, explain the process, and help you decide whether retrofit wall insulation is the right option for your property.