Wall Insulation

In a typical kiwi home, more than 30% of your homes heat loss
comes from uninsulated walls.

Wall insulation help to keep your house comfortable all year round.

Wall insulation is the second most important area you should look at, after your ceiling insulation but before your windows, particularly since an estimated 30-40% of the heat in your home is lost through the walls.

CosyWall Insulation is a wall insulation system 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 provides one of the best solutions for insulating your existing walls.

CosyWall Insulation has been installed in New Zealand homes since 2002. For 20 years New Zealanders have chosen CosyWall Insulation as their preferred retrofit wall insulation. Over the past two decades, the team has continually worked to develop and improve their systems and processes and has worked to develop cutting-edge technology which improves the efficiency and delivery of their product.

Insultech Insulation has been using CosyWall Insulation since the product was developed and our customers love it. We’ve proven time and time again that CosyWall Insulation creates a beautifully warm living environment and a much healthier home for your family.

Download the CosyWall Insulation brochure for more information and technical specifications of their system.

Some of the benefits of CosyWall Insulation...

Energy Efficient

Wall insulation helps reduce your carbon footprint by improving the energy efficiency of your home.

High Performance

Our high performance wall insulation can help to reduce your homes heat loss by over 30%.

Codemark Certified

Our wall insulation products are Codemark certified and regularly auditied giving you peace of mind.

Frequently Asked Questions

We are often asked questions about Wall Insulation and how it works. Have a look below for answers to our most common questions.

Does the insulation every shrink or slump?

The great thing about CosyWall Insulation is that we install it to such a high density that it’s never going to slump or shink inside your walls.

CosyWall is based on European technology and is proven overseas as well as in New Zealand. The product is not going to deteriorate over time, and once it’s in your walls, it’s there to stay. It will continue performing day in, day out and will never cost you a cent to run.

The result is a much warmer, healthier home that you’ll love to live in!

Talk to the team today about having CosyWall Insulation installed into your home.

Can you install into brick houses?

One of the questions we get asked on a regular basis is if we can install CosyWall Insulation into a brick home. Yes, we can install CosyWall into a brick house, and CosyWall is CodeMark certified to be installed into brick houses.

The product is a specialised German engineered product that’s been designed to be installed into the double brick cavity homes in Europe. CosyWall is designed to go against wet or damp surfaces and includes a water-repellant with specially designed fibers making it ideal for New Zealand brick homes.

What does the R-Value mean?

We often get asked about R-values in CosyWall. An R-value is simply a measure of a thermal resistance of an insulation product. The higher the number the better it will retain heat inside your house.

CosyWall Insulation has the highest R-value that’s obtainable in this type of product and is equivalent to the top batts and blown insulation products available in New Zealand.

How long does it take to install?

Most people are surprised how quickly CosyWall Insulation can be installed. Officially it depends on the size and complexity of your home, but in most cases, the installation can be completed in a couple of days.

Just head away for one day and when you come back your home will be filled with CosyWall Insulation and you won’t believe the difference!

Can I install from the interior and exterior?

CosyWall Insulation can be installed from either the outside or the inside of the house.

Internal installations are usually only done when you’re renovating or redecorating the inside of the home. External installations are much easier and can be done all year round.

Talk to the team at CosyWall Insulation today about installing wall insulation into your home.

CosyWall Customer Testimonial

Hear from Steven and Emma as they explain what a difference CosyWall Insulation has made to their home. Just one of the many customers who love CosyWall Insulation.

Customer Testimonials

Here's what our customers are saying about Insultech

The heat pump is not running full on all the time. Even on a cold day, we can turn it off during the day and then, when we turn it on again later in the evening, it just heats the house up much quicker. Amazing, wish we had done it years ago.

Debbie B
Tauranga

The comfort levels in my home have improved out of sight. I am thrilled with the results plus Leigh and his team were brilliant. I am 100% satisfied.

Maureen W
Putaruru

The house is easier to heat and not as cold on frosty mornings. Plus, we live on a busy road and now cannot hear the traffic anymore. CosyWall has made a huge difference.