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What is Insulmax® Wall Insulation ?

Insulmax® wall insulation is a soft, white, water resistant mineral fibre manufactured to the highest European standards. It is safe, dry, non combustible and formaldehyde free.

The Insulmax®  Retrofit Wall Insulation System is designed to insulate the walls of all styles of New Zealand homes without renovation or removing wall linings. Installation uses the smallest holes made in the exterior or interior wall lining. The exterior cladding is left weathertight. Our aim is to leave no sign that your walls have been insulated.

Insulmax® is the affordable, no hassle system to insulate your walls and typically takes only two days to insulate the walls of most homes. Join the hundreds of Kiwi and millions of U.K. families enjoying the benefits of blown mineral fibre wall insulation.

At Insulmax, we pride ourselves in providing innovative home insulation solutions to New Zealanders that are tailored to your home and use the latest technology and products.

We are blown mineral fibre insulation specialists and have the experience and technology to very effectively and affordably insulate the walls of your home. We are the only retro wall insulation method to be awarded CodeMark certification.

We saw a gap (mind the pun!) in the New Zealand market for retro wall insulation that can be installed in almost any home, no matter how old it is. Forget about removing wall linings. Don’t wait until you renovate. Don’t stop at just floor and ceiling insulation. We can transform your home to a warm and inviting place to be without any preconceived hassles.

Our goal

The majority of homes in New Zealand were built with no wall insulation. Our vision is for everyone to have a drier, warmer, quieter and healthier home through cost effective insulation.

Why choose Insulmax?

  • Warmer, drier and healthier home

  • Affordable no hassle installation

  • Will not settle or shrink

  • Affordable no hassle installation

  • Safe, dry and formaldehyde free

  • Water resistant and breathable

  • Tried and tested in 6.5 million U.K homes

  • Non combustible

  • Product guarantee of 50 years

Suitable for 99.9% of Older Kiwi Homes

Insulmax® cavity wall insulation has been awarded CodMark certification to be installed for all types and styles of New Zealand homes and can be installed through almost all external claddings including: brick, weatherboard, block, roughcast (stucco) and fibro. We can also install through internal plaster board linings. Installation holes can be as small as a 10 cent coin in the mortar joint of a brick home and about the size of a 20 cent coin for timber clad homes.

Insulmax® insulation is water repellent and breathable so there is no requirement for building paper and it is manufactured not to absorb or wick water so it can be installed directly behind masonry. Our trained and licensed installers will finish your exterior cladding to a durable & weathertight finish. We aim to leave no signs that the walls of your property have been insulated. You’ll feel the benefits immediately and our 50 year product guarantee means those benefits will continue for years to come!

Why renovate to insulate?

The cost, hassle and mess of removing walls to add insulation has, for years, been the daunting reason why many people continue to live in uninsulated cold homes.  Most DIY’ers take weeks, months or even years to insulate their walls the old fashioned way and it’s an expensive job for the professionals.

The team at Insulmax® can cost effectively complete your wall insulation in about two days and leave your property spotless. Our aim is for our customers to see no sign that their walls have been insulated. There is no need to remove wall linings to upgrade your home! Add value to your home and save money using a system that European homeowners have tried and tested for decades. Our  retro wall inslation system is fully certified for use in New Zealand.

What the Customers Say

"I looked into having my house insulated earlier this year; I received quotes from a couple of firms and decided to go with Stephen from Insulmax. Our House is a 1950s stucco with double glazing.

His price was very competitive and he explained the process that he would be doing to complete the job. He was able to show me a sample of his product and what it would achieve.

The difference it has made is fantastic. We have a heat pump that was used to running for a long period of time to keep the house warm, this has been cut back significantly, even with the frosts we’ve had. The outside noises have been dampened as well. Once the job was painted, it is hard to see where the holes were drilled. Stephen was extremely helpful and I have recommended him to a friend who has used him also." - Grant & Helz, Wellington


"I’ve lived in a cold house for more than 20 years before I found the solution to my heating problems.
We had Insulmax insulation installed in our home three weeks ago and we’ve noticed the change. It’s made a huge difference.

We lose the sun at 2pm during the winter and we rely on the heatpump for warmth. We used to have the heatpump running 24/7 to keep the house warm, but now we can turn it on when I come home from work and turn it off when I go to bed. I’m extremely happy.

After more than 20 years in a cold house I’m pleased that I can come home to a warm insulated house. I’d would recommend this insulation option to anyone with a older home." - Janice Whati, Dunedin


"I looked into having my house insulated earlier this year; I received quotes from a couple of firms and decided to go with Stephen from Insulmax. Our House is a 1950s stucco with double glazing.

His price was very competitive and he explained the process that he would be doing to complete the job. He was able to show me a sample of his product and what it would achieve.

The difference it has made is fantastic. We have a heat pump that was used to running for a long period of time to keep the house warm, this has been cut back significantly, even with the frosts we’ve had. The outside noises have been dampened as well. Once the job was painted, it is hard to see where the holes were drilled. Stephen was extremely helpful and I have recommended him to a friend who has used him also." - James - Manuatu