About

MAXRaft offer a range of fully insulated and thermally broken concrete slabs with R-values that easily meet the requirements of the building code.   

The team at MAXRaft is passionate about creating healthier, warmer and more energy-efficient homes. Historically New Zealander's have concentrated on insulating ceilings and walls, however, up to a third of a building’s heat can be lost through an uninsulated floor. Up to 80% of heat loss can be through the external edges of the slab. 

MAXRaft products combine strength with durability. The slab encases the perimeter and puts a continuous layer of MAXRaft between the ground and concrete, unlike traditional waffle slabs. This insulation has a dramatic effect on the surface temperature, significantly increasing the comfort of the home and the health of the family, all the while lowering the cost of heating. Iso-thermal analysis conducted in line with ISO 10211 comparing MAXRaft to a traditional waffle slab showed MAXRaft is significantly warmer, providing comfortable warmth even in the middle of winter climates. 

Fully engineered, MAXRaft has solutions for most types of ground (incl TC1/2/Exp. soils, piles), residential (single storey, multi-level or simply an extension) and commercial build while providing construction R-values between 2.5 and 5 depending on the project. Installation is quick, practical and efficient with site-specific insulated slabs delivered to the site in pre-cut segments. Founded in Queenstown, with representatives and install teams throughout New Zealand, MAXRaft is committed to providing well-insulated homes for its customers.

When considering Homestar or Passive House certification a MAXRaft slab is the perfect place to start.

View our BRANZ Appraisal.

Testimonials

I have specified MAXRaft on various projects since first coming across it over five years ago. In New Zealand we have generally ignored insulating the foundation, contributing to the number of cold and damp homes that we see today. MAXRaft's high R-values and increased thermal performance result in warmer and more cost effective homes.

Because of the increased thermal efficiency and lower running costs we plan to use MAXRaft in our new residential and social housing projects, giving everyone the opportunity to live in a warm and healthy environment

Architect

My builder convinced me to try a MAXRaft slab when working out plans for our new home. Since moving in to the new build on Sept 1st 2018, my partner and I were interested to see how the underfloor heating system would perform. We are now at the end of July 2019 and we could not be happier. What a delight coming home from work to a warm home. The system allows us to just heat the rooms we use regularly, which saves on power. We have our living area set at 18 degrees, but due to the sun and glazing the room temperatures sits higher during the day and maintains an even temperature at night.

The team at MAXRaft are great to work with and we highly recommend anybody contemplating a new build to get in contact with them.

Home Owner 

I installed a MAXRaft slab with underfloor heating in the ZigZagZoo Childcare Centre in Queenstown in 2014. This has performed very well, keeping the kids warm at 21 degrees throughout the past 5 winters at a very reduced cost compared to other heating options.

This year I am also in the middle of construction on my own place. This includes MAXRaft with u/f heating and MAXSpan across a few levels, watch this space...

Home Owner & Developer 

I have specified MAXRaft on various projects since first coming across it over five years ago. In New Zealand we have generally ignored insulating the foundation, contributing to the number of cold and damp homes that we see today. MAXRaft's high R-values and increased thermal performance result in warmer and more cost effective homes.

Because of the increased thermal efficiency and lower running costs we plan to use MAXRaft in our new residential and social housing projects, giving everyone the opportunity to live in a warm and healthy environment

Architect

My builder convinced me to try a MAXRaft slab when working out plans for our new home. Since moving in to the new build on Sept 1st 2018, my partner and I were interested to see how the underfloor heating system would perform. We are now at the end of July 2019 and we could not be happier. What a delight coming home from work to a warm home. The system allows us to just heat the rooms we use regularly, which saves on power. We have our living area set at 18 degrees, but due to the sun and glazing the room temperatures sits higher during the day and maintains an even temperature at night.

The team at MAXRaft are great to work with and we highly recommend anybody contemplating a new build to get in contact with them.

Home Owner 

We used a MAXRAft slab because it is New Zealand’s only fully insulated concrete slab and to us it seemed silly to be thinking about insulating everything else in the house and not the floor beneath us. MAXRaft comes with a long list of benefits, both for our families health and for our financial health in the long term, and much much more. A MAXRaft slab is like having Merino socks and heavy duty boots on your feet! Having the heat enter the room from the floor, makes it not feel like heating, but just leaves the room feeling a constant, perfect temperature, plus the slow release makes it more manageable and enjoyable. 

4 months after moving in, we were already noticing the difference. We have underfloor heating in our slab, which is why the insulation is SO key, and it worked out very affordable to run. We would wake up every morning to a beautiful warm home, the heat STAYS in the home and the floor beneath us is always cosy and warm.

And hey- we don't sell MAXRaft, we have no links whatsoever to the company and yet I would still happily campaign their product to any potential building clients because I have experienced first hand the difference it has made for US and OUR family

Builder 

I installed a MAXRaft slab with underfloor heating in the ZigZagZoo Childcare Centre in Queenstown in 2014. This has performed very well, keeping the kids warm at 21 degrees throughout the past 5 winters at a very reduced cost compared to other heating options.

This year I am also in the middle of construction on my own place. This includes MAXRaft with u/f heating and MAXSpan across a few levels, watch this space...

Home Owner & Developer 

We used a MAXRAft slab because it is New Zealand’s only fully insulated concrete slab and to us it seemed silly to be thinking about insulating everything else in the house and not the floor beneath us. MAXRaft comes with a long list of benefits, both for our families health and for our financial health in the long term, and much much more. A MAXRaft slab is like having Merino socks and heavy duty boots on your feet! Having the heat enter the room from the floor, makes it not feel like heating, but just leaves the room feeling a constant, perfect temperature, plus the slow release makes it more manageable and enjoyable. 

4 months after moving in, we were already noticing the difference. We have underfloor heating in our slab, which is why the insulation is SO key, and it worked out very affordable to run. We would wake up every morning to a beautiful warm home, the heat STAYS in the home and the floor beneath us is always cosy and warm.

And hey- we don't sell MAXRaft, we have no links whatsoever to the company and yet I would still happily campaign their product to any potential building clients because I have experienced first hand the difference it has made for US and OUR family

Builder 

We tried to design a warmer than average house without a huge expense to obtain thermal gain. Given we have a large area of up to 4m high windows. We used conventional 'sticks and fluff'-timber framing and glass wool, this gave us R4.5 walls and R6.2 in the ceiling. Combined with a full MAXSlab R4.5 we also added a fully wrapped sigma system. This reduced air flow leaks to less than half! Which in turn has halved the heating cost of the home. We have managed to carry over the warmth from the day before and contain it all nght. All in all we are very pleased with the results and a MAXRaft was a must to the combination. If you require any referrals, send them our way!

Home Owner 

We built our Queenstown home over three years ago to be an energy-efficient home. The literal foundation to achieve that standard was the MAXRaft fully-insulated slab. Our home qualified for a 6 Homestar rating and completely delivers on a more comfortable, evenly warm and healthier environment with fewer running costs. The part I love most about it is the warm floor! Sunday mornings, the family makes breakfast together, walking around still in pyjamas and barefoot - even in the winter.

As a Homestar Assessor, recommening a MAXRaft slab is an easy choice as I know first-hand how priceles the comfort it delivers is.

Home owner and Homestar Assessor