Skip to main content

CosyWall Thermal

CosyWall Insulation Logo
Request a Quote
CosyWall Thermal

Warmer, drier, healthier walls for your NZ home

Industry-leading blown wall insulation for New Zealand homes. CodeMark certified, 50-year guarantee, and installed in thousands of Kiwi homes since 2002.

Find your local installer
Icon representing an energy efficient home

Creates a healthier and safer home environment.

Icon representing improved thermal performance

High performance wall insulation for NZ homes.

Icon representing codemark certification

Codemark certified with 50 year guarantee.

Icon representing savings on energy usage

Save on your monthly electricity bill.

Try the wall insulation calculator

Calculate the cost to add external wall insulation to your home.

Retrofit Wall Insulation Calculator

Enter the total floor area of your home in square metres to calculate an estimated cost for wall insulation.

This estimate is based on installing CosyWall Insulation at an installed R-Value of R2.2.

THE PROBLEM

Most NZ homes are losing heat through uninsulated walls

Most homes built before the 1990s have ceiling and underfloor insulation — but the walls were left completely empty. Heat naturally moves from warm spaces to cold ones, and without insulation in the walls, the warmth you pay to create simply escapes outside.

Research shows that up to 25% of your home's heat can be lost through uninsulated walls — making your home harder and more expensive to keep warm, and contributing to damp, cold surfaces that can lead to mould and condensation.

Up to 25% of heat loss in an uninsulated home comes through the walls — more than through the floor.

Installation Methods

CosyWall Thermal is our industry-leading blown wall insulation product for New Zealand homes. It can be installed using three different methods depending on your home and project type — choose the application that best suits your situation.

Installing insulation into an external wall from outside

External
Walls

Installed through external cladding

Ideal for most existing homes. Small holes are drilled through the weatherboard, brick or other cladding from outside. Insulation is blown in and all holes are sealed and repainted — minimal disruption, no interior work required.

Learn More
Installing insulation into an internal wall

Internal
Walls

Installed through existing plasterboard

Where exterior access isn't practical, CosyWall can be installed from inside. Small holes are drilled through the internal plasterboard, insulation is blown in, and the holes are patched and finished ready for painting — a tidy, effective interior solution.

Learn More
Installing wall insulation with the linings off

Linings Off
Installation

For renovation and new build projects

The perfect solution when you're already renovating or rebuilding. With internal linings removed, a mesh and BIB barrier system is installed before CosyWall is blown in — delivering maximum thermal performance to NZS 4246:2016 standards.

Learn More

CosyWall can be used to insulate most walls

CosyWall Insulation can be used to insulate most types of exterior and interior walls, including brick, weatherboard, fibre cement, stucco and plasterboard.

Brick Wall Insulation

Brick
Walls

Insulating Weatherboard Walls

Weatherboard
Cladding

Insulating Fibre Cement Walls

Fibre
Cement

Stucco Cladding Insulation

Stucco
Cladding

Insulating Internal Plasterboard

Internal
Plasterboard

Midfloor Insulation Applications

Midfloor
Applications

    CosyWall Insulation Logo

    Request a Quote 

    Interested in a quote for your property? Fill out the form and one of our team members will be in touch shortly.

    Your Details

    How can we help?

    How we use your details. Safe-R Insulation (NZ) Limited collects these details so we can answer your enquiry and pass it to the Safe-R network installer for your region, who is a separate company and who will contact you to quote and do the work. Giving us your details is voluntary, but we cannot respond or arrange a quote without them. You can ask us for a copy of what we hold about you and ask us to correct it. Our Privacy Policy explains all of this, including how we use cookies and advertising tags.